Update

.gitmodules

@@ -1,4 +1,4 @@
 [submodule "src/main/proto"]
 	path = src/main/proto
-	url = ssh://vcs@phabricator.internetapi.cn:2222/source/bdchain-grpc-api.git
+	url = ssh://vcs@phabricator.internetapi.cn/source/bdledger-grpc-api.git
 	branch = master

build.gradle

@@ -3,22 +3,22 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.8'
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.11'
     }
 }
 
 plugins {
     id 'java'
-    id 'com.google.protobuf' version '0.8.8'
+    id 'com.google.protobuf' version '0.8.11'
 }
 
-group 'org.bdchain'
+group 'org.bdware'
 version '1.0-SNAPSHOT'
 
-sourceCompatibility = 1.8
+sourceCompatibility = JavaVersion.VERSION_1_8
 
-def grpc_java_version = '1.20.0'
+def grpc_java_version = '1.27.0'
-def junit_version = '5.4.1'
+def junit_version = '5.6.0'
 
 tasks.withType(JavaCompile) {
     options.encoding = "UTF-8"
@@ -43,7 +43,7 @@ javadoc {
 
 protobuf {
     protoc {
-        artifact = "com.google.protobuf:protoc:3.7.1"
+        artifact = "com.google.protobuf:protoc:3.11.3"
     }
     plugins {
         grpc {
@@ -68,6 +68,11 @@ dependencies {
     compile 'io.grpc:grpc-netty-shaded:' + grpc_java_version
     compile 'io.grpc:grpc-protobuf:' + grpc_java_version
     compile 'io.grpc:grpc-stub:' + grpc_java_version
+    if (JavaVersion.current().isJava9Compatible()) {
+        // Workaround for @javax.annotation.Generated
+        // see: https://github.com/grpc/grpc-java/issues/3633
+        compile 'javax.annotation:javax.annotation-api:1.3.2'
+    }
     testImplementation 'org.junit.jupiter:junit-jupiter-api:' + junit_version
     testImplementation 'org.junit.jupiter:junit-jupiter-params:' + junit_version
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:' + junit_version

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Tue Sep 11 16:37:15 CST 2018
+#Fri Feb 07 14:29:24 GMT+08:00 2020
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.8-all.zip
+zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,7 +44,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
@@ -109,8 +125,8 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
+# For Cygwin or MSYS, switch paths to Windows format before running java
-if $cygwin ; then
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
     JAVACMD=`cygpath --unix "$JAVACMD"`
@@ -138,19 +154,19 @@ if $cygwin ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=$((i+1))
+        i=`expr $i + 1`
     done
     case $i in
-        (0) set -- ;;
+        0) set -- ;;
-        (1) set -- "$args0" ;;
+        1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
+        2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -159,14 +175,9 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=$(save "$@")
+APP_ARGS=`save "$@"`
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
 exec "$JAVACMD" "$@"

gradlew.bat

@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -14,7 +30,7 @@ set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome

settings.gradle

@@ -1,2 +1,2 @@
-rootProject.name = 'bdchain-java-sdk'
+rootProject.name = 'BDLedger Java SDK'
 

src/main/java/bdchain/api/grpc/acchain/AccountingChainGrpc.java

@@ -1,730 +0,0 @@
-package bdchain.api.grpc.acchain;
-
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-
-/**
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0)",
-    comments = "Source: bdchain/api/ac_chain.proto")
-public final class AccountingChainGrpc {
-
-  private AccountingChainGrpc() {}
-
-  public static final String SERVICE_NAME = "bdchain.api.acchain.AccountingChain";
-
-  // Static method descriptors that strictly reflect the proto.
-  private static volatile io.grpc.MethodDescriptor<com.google.protobuf.Empty,
-      bdchain.api.grpc.common.ClientVersionResponse> getClientVersionMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "ClientVersion",
-      requestType = com.google.protobuf.Empty.class,
-      responseType = bdchain.api.grpc.common.ClientVersionResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<com.google.protobuf.Empty,
-      bdchain.api.grpc.common.ClientVersionResponse> getClientVersionMethod() {
-    io.grpc.MethodDescriptor<com.google.protobuf.Empty, bdchain.api.grpc.common.ClientVersionResponse> getClientVersionMethod;
-    if ((getClientVersionMethod = AccountingChainGrpc.getClientVersionMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getClientVersionMethod = AccountingChainGrpc.getClientVersionMethod) == null) {
-          AccountingChainGrpc.getClientVersionMethod = getClientVersionMethod = 
-              io.grpc.MethodDescriptor.<com.google.protobuf.Empty, bdchain.api.grpc.common.ClientVersionResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "ClientVersion"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  com.google.protobuf.Empty.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.common.ClientVersionResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("ClientVersion"))
-                  .build();
-          }
-        }
-     }
-     return getClientVersionMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.BlockNumberRequest,
-      bdchain.api.grpc.acchain.BlockNumberResponse> getBlockNumberMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "BlockNumber",
-      requestType = bdchain.api.grpc.acchain.BlockNumberRequest.class,
-      responseType = bdchain.api.grpc.acchain.BlockNumberResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.BlockNumberRequest,
-      bdchain.api.grpc.acchain.BlockNumberResponse> getBlockNumberMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.BlockNumberRequest, bdchain.api.grpc.acchain.BlockNumberResponse> getBlockNumberMethod;
-    if ((getBlockNumberMethod = AccountingChainGrpc.getBlockNumberMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getBlockNumberMethod = AccountingChainGrpc.getBlockNumberMethod) == null) {
-          AccountingChainGrpc.getBlockNumberMethod = getBlockNumberMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.acchain.BlockNumberRequest, bdchain.api.grpc.acchain.BlockNumberResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "BlockNumber"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.BlockNumberRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.BlockNumberResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("BlockNumber"))
-                  .build();
-          }
-        }
-     }
-     return getBlockNumberMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetBlockByNumberRequest,
-      bdchain.api.grpc.acchain.Block> getGetBlockByNumberMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetBlockByNumber",
-      requestType = bdchain.api.grpc.acchain.GetBlockByNumberRequest.class,
-      responseType = bdchain.api.grpc.acchain.Block.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetBlockByNumberRequest,
-      bdchain.api.grpc.acchain.Block> getGetBlockByNumberMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetBlockByNumberRequest, bdchain.api.grpc.acchain.Block> getGetBlockByNumberMethod;
-    if ((getGetBlockByNumberMethod = AccountingChainGrpc.getGetBlockByNumberMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getGetBlockByNumberMethod = AccountingChainGrpc.getGetBlockByNumberMethod) == null) {
-          AccountingChainGrpc.getGetBlockByNumberMethod = getGetBlockByNumberMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.acchain.GetBlockByNumberRequest, bdchain.api.grpc.acchain.Block>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "GetBlockByNumber"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.GetBlockByNumberRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.Block.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("GetBlockByNumber"))
-                  .build();
-          }
-        }
-     }
-     return getGetBlockByNumberMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetBlockByHashRequest,
-      bdchain.api.grpc.acchain.Block> getGetBlockByHashMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetBlockByHash",
-      requestType = bdchain.api.grpc.acchain.GetBlockByHashRequest.class,
-      responseType = bdchain.api.grpc.acchain.Block.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetBlockByHashRequest,
-      bdchain.api.grpc.acchain.Block> getGetBlockByHashMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetBlockByHashRequest, bdchain.api.grpc.acchain.Block> getGetBlockByHashMethod;
-    if ((getGetBlockByHashMethod = AccountingChainGrpc.getGetBlockByHashMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getGetBlockByHashMethod = AccountingChainGrpc.getGetBlockByHashMethod) == null) {
-          AccountingChainGrpc.getGetBlockByHashMethod = getGetBlockByHashMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.acchain.GetBlockByHashRequest, bdchain.api.grpc.acchain.Block>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "GetBlockByHash"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.GetBlockByHashRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.Block.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("GetBlockByHash"))
-                  .build();
-          }
-        }
-     }
-     return getGetBlockByHashMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByHashRequest,
-      bdchain.api.grpc.acchain.Transaction> getGetTransactionByHashMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetTransactionByHash",
-      requestType = bdchain.api.grpc.acchain.GetTransactionByHashRequest.class,
-      responseType = bdchain.api.grpc.acchain.Transaction.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByHashRequest,
-      bdchain.api.grpc.acchain.Transaction> getGetTransactionByHashMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByHashRequest, bdchain.api.grpc.acchain.Transaction> getGetTransactionByHashMethod;
-    if ((getGetTransactionByHashMethod = AccountingChainGrpc.getGetTransactionByHashMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getGetTransactionByHashMethod = AccountingChainGrpc.getGetTransactionByHashMethod) == null) {
-          AccountingChainGrpc.getGetTransactionByHashMethod = getGetTransactionByHashMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.acchain.GetTransactionByHashRequest, bdchain.api.grpc.acchain.Transaction>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "GetTransactionByHash"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.GetTransactionByHashRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.Transaction.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("GetTransactionByHash"))
-                  .build();
-          }
-        }
-     }
-     return getGetTransactionByHashMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest,
-      bdchain.api.grpc.acchain.Transaction> getGetTransactionByBlockNumberAndIndexMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetTransactionByBlockNumberAndIndex",
-      requestType = bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest.class,
-      responseType = bdchain.api.grpc.acchain.Transaction.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest,
-      bdchain.api.grpc.acchain.Transaction> getGetTransactionByBlockNumberAndIndexMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest, bdchain.api.grpc.acchain.Transaction> getGetTransactionByBlockNumberAndIndexMethod;
-    if ((getGetTransactionByBlockNumberAndIndexMethod = AccountingChainGrpc.getGetTransactionByBlockNumberAndIndexMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getGetTransactionByBlockNumberAndIndexMethod = AccountingChainGrpc.getGetTransactionByBlockNumberAndIndexMethod) == null) {
-          AccountingChainGrpc.getGetTransactionByBlockNumberAndIndexMethod = getGetTransactionByBlockNumberAndIndexMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest, bdchain.api.grpc.acchain.Transaction>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "GetTransactionByBlockNumberAndIndex"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.Transaction.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("GetTransactionByBlockNumberAndIndex"))
-                  .build();
-          }
-        }
-     }
-     return getGetTransactionByBlockNumberAndIndexMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest,
-      bdchain.api.grpc.acchain.Transaction> getGetTransactionByBlockHashAndIndexMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetTransactionByBlockHashAndIndex",
-      requestType = bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.class,
-      responseType = bdchain.api.grpc.acchain.Transaction.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest,
-      bdchain.api.grpc.acchain.Transaction> getGetTransactionByBlockHashAndIndexMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest, bdchain.api.grpc.acchain.Transaction> getGetTransactionByBlockHashAndIndexMethod;
-    if ((getGetTransactionByBlockHashAndIndexMethod = AccountingChainGrpc.getGetTransactionByBlockHashAndIndexMethod) == null) {
-      synchronized (AccountingChainGrpc.class) {
-        if ((getGetTransactionByBlockHashAndIndexMethod = AccountingChainGrpc.getGetTransactionByBlockHashAndIndexMethod) == null) {
-          AccountingChainGrpc.getGetTransactionByBlockHashAndIndexMethod = getGetTransactionByBlockHashAndIndexMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest, bdchain.api.grpc.acchain.Transaction>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.acchain.AccountingChain", "GetTransactionByBlockHashAndIndex"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.acchain.Transaction.getDefaultInstance()))
-                  .setSchemaDescriptor(new AccountingChainMethodDescriptorSupplier("GetTransactionByBlockHashAndIndex"))
-                  .build();
-          }
-        }
-     }
-     return getGetTransactionByBlockHashAndIndexMethod;
-  }
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static AccountingChainStub newStub(io.grpc.Channel channel) {
-    return new AccountingChainStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static AccountingChainBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new AccountingChainBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static AccountingChainFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new AccountingChainFutureStub(channel);
-  }
-
-  /**
-   */
-  public static abstract class AccountingChainImplBase implements io.grpc.BindableService {
-
-    /**
-     */
-    public void clientVersion(com.google.protobuf.Empty request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.common.ClientVersionResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getClientVersionMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void blockNumber(bdchain.api.grpc.acchain.BlockNumberRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.BlockNumberResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getBlockNumberMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getBlockByNumber(bdchain.api.grpc.acchain.GetBlockByNumberRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Block> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetBlockByNumberMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getBlockByHash(bdchain.api.grpc.acchain.GetBlockByHashRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Block> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetBlockByHashMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getTransactionByHash(bdchain.api.grpc.acchain.GetTransactionByHashRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetTransactionByHashMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getTransactionByBlockNumberAndIndex(bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetTransactionByBlockNumberAndIndexMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getTransactionByBlockHashAndIndex(bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetTransactionByBlockHashAndIndexMethod(), responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            getClientVersionMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.Empty,
-                bdchain.api.grpc.common.ClientVersionResponse>(
-                  this, METHODID_CLIENT_VERSION)))
-          .addMethod(
-            getBlockNumberMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.acchain.BlockNumberRequest,
-                bdchain.api.grpc.acchain.BlockNumberResponse>(
-                  this, METHODID_BLOCK_NUMBER)))
-          .addMethod(
-            getGetBlockByNumberMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.acchain.GetBlockByNumberRequest,
-                bdchain.api.grpc.acchain.Block>(
-                  this, METHODID_GET_BLOCK_BY_NUMBER)))
-          .addMethod(
-            getGetBlockByHashMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.acchain.GetBlockByHashRequest,
-                bdchain.api.grpc.acchain.Block>(
-                  this, METHODID_GET_BLOCK_BY_HASH)))
-          .addMethod(
-            getGetTransactionByHashMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.acchain.GetTransactionByHashRequest,
-                bdchain.api.grpc.acchain.Transaction>(
-                  this, METHODID_GET_TRANSACTION_BY_HASH)))
-          .addMethod(
-            getGetTransactionByBlockNumberAndIndexMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest,
-                bdchain.api.grpc.acchain.Transaction>(
-                  this, METHODID_GET_TRANSACTION_BY_BLOCK_NUMBER_AND_INDEX)))
-          .addMethod(
-            getGetTransactionByBlockHashAndIndexMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest,
-                bdchain.api.grpc.acchain.Transaction>(
-                  this, METHODID_GET_TRANSACTION_BY_BLOCK_HASH_AND_INDEX)))
-          .build();
-    }
-  }
-
-  /**
-   */
-  public static final class AccountingChainStub extends io.grpc.stub.AbstractStub<AccountingChainStub> {
-    private AccountingChainStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private AccountingChainStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected AccountingChainStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new AccountingChainStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public void clientVersion(com.google.protobuf.Empty request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.common.ClientVersionResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getClientVersionMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void blockNumber(bdchain.api.grpc.acchain.BlockNumberRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.BlockNumberResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getBlockNumberMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getBlockByNumber(bdchain.api.grpc.acchain.GetBlockByNumberRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Block> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetBlockByNumberMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getBlockByHash(bdchain.api.grpc.acchain.GetBlockByHashRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Block> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetBlockByHashMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getTransactionByHash(bdchain.api.grpc.acchain.GetTransactionByHashRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetTransactionByHashMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getTransactionByBlockNumberAndIndex(bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetTransactionByBlockNumberAndIndexMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getTransactionByBlockHashAndIndex(bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetTransactionByBlockHashAndIndexMethod(), getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   */
-  public static final class AccountingChainBlockingStub extends io.grpc.stub.AbstractStub<AccountingChainBlockingStub> {
-    private AccountingChainBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private AccountingChainBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected AccountingChainBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new AccountingChainBlockingStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.common.ClientVersionResponse clientVersion(com.google.protobuf.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), getClientVersionMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.acchain.BlockNumberResponse blockNumber(bdchain.api.grpc.acchain.BlockNumberRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getBlockNumberMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.acchain.Block getBlockByNumber(bdchain.api.grpc.acchain.GetBlockByNumberRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getGetBlockByNumberMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.acchain.Block getBlockByHash(bdchain.api.grpc.acchain.GetBlockByHashRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getGetBlockByHashMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.acchain.Transaction getTransactionByHash(bdchain.api.grpc.acchain.GetTransactionByHashRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getGetTransactionByHashMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.acchain.Transaction getTransactionByBlockNumberAndIndex(bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getGetTransactionByBlockNumberAndIndexMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.acchain.Transaction getTransactionByBlockHashAndIndex(bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getGetTransactionByBlockHashAndIndexMethod(), getCallOptions(), request);
-    }
-  }
-
-  /**
-   */
-  public static final class AccountingChainFutureStub extends io.grpc.stub.AbstractStub<AccountingChainFutureStub> {
-    private AccountingChainFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private AccountingChainFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected AccountingChainFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new AccountingChainFutureStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.common.ClientVersionResponse> clientVersion(
-        com.google.protobuf.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(getClientVersionMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.acchain.BlockNumberResponse> blockNumber(
-        bdchain.api.grpc.acchain.BlockNumberRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getBlockNumberMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.acchain.Block> getBlockByNumber(
-        bdchain.api.grpc.acchain.GetBlockByNumberRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetBlockByNumberMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.acchain.Block> getBlockByHash(
-        bdchain.api.grpc.acchain.GetBlockByHashRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetBlockByHashMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.acchain.Transaction> getTransactionByHash(
-        bdchain.api.grpc.acchain.GetTransactionByHashRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetTransactionByHashMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.acchain.Transaction> getTransactionByBlockNumberAndIndex(
-        bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetTransactionByBlockNumberAndIndexMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.acchain.Transaction> getTransactionByBlockHashAndIndex(
-        bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetTransactionByBlockHashAndIndexMethod(), getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_CLIENT_VERSION = 0;
-  private static final int METHODID_BLOCK_NUMBER = 1;
-  private static final int METHODID_GET_BLOCK_BY_NUMBER = 2;
-  private static final int METHODID_GET_BLOCK_BY_HASH = 3;
-  private static final int METHODID_GET_TRANSACTION_BY_HASH = 4;
-  private static final int METHODID_GET_TRANSACTION_BY_BLOCK_NUMBER_AND_INDEX = 5;
-  private static final int METHODID_GET_TRANSACTION_BY_BLOCK_HASH_AND_INDEX = 6;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final AccountingChainImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(AccountingChainImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_CLIENT_VERSION:
-          serviceImpl.clientVersion((com.google.protobuf.Empty) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.common.ClientVersionResponse>) responseObserver);
-          break;
-        case METHODID_BLOCK_NUMBER:
-          serviceImpl.blockNumber((bdchain.api.grpc.acchain.BlockNumberRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.BlockNumberResponse>) responseObserver);
-          break;
-        case METHODID_GET_BLOCK_BY_NUMBER:
-          serviceImpl.getBlockByNumber((bdchain.api.grpc.acchain.GetBlockByNumberRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Block>) responseObserver);
-          break;
-        case METHODID_GET_BLOCK_BY_HASH:
-          serviceImpl.getBlockByHash((bdchain.api.grpc.acchain.GetBlockByHashRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Block>) responseObserver);
-          break;
-        case METHODID_GET_TRANSACTION_BY_HASH:
-          serviceImpl.getTransactionByHash((bdchain.api.grpc.acchain.GetTransactionByHashRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction>) responseObserver);
-          break;
-        case METHODID_GET_TRANSACTION_BY_BLOCK_NUMBER_AND_INDEX:
-          serviceImpl.getTransactionByBlockNumberAndIndex((bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction>) responseObserver);
-          break;
-        case METHODID_GET_TRANSACTION_BY_BLOCK_HASH_AND_INDEX:
-          serviceImpl.getTransactionByBlockHashAndIndex((bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.acchain.Transaction>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static abstract class AccountingChainBaseDescriptorSupplier
-      implements io.grpc.protobuf.ProtoFileDescriptorSupplier, io.grpc.protobuf.ProtoServiceDescriptorSupplier {
-    AccountingChainBaseDescriptorSupplier() {}
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.getDescriptor();
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.ServiceDescriptor getServiceDescriptor() {
-      return getFileDescriptor().findServiceByName("AccountingChain");
-    }
-  }
-
-  private static final class AccountingChainFileDescriptorSupplier
-      extends AccountingChainBaseDescriptorSupplier {
-    AccountingChainFileDescriptorSupplier() {}
-  }
-
-  private static final class AccountingChainMethodDescriptorSupplier
-      extends AccountingChainBaseDescriptorSupplier
-      implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
-    private final String methodName;
-
-    AccountingChainMethodDescriptorSupplier(String methodName) {
-      this.methodName = methodName;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.MethodDescriptor getMethodDescriptor() {
-      return getServiceDescriptor().findMethodByName(methodName);
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (AccountingChainGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new AccountingChainFileDescriptorSupplier())
-              .addMethod(getClientVersionMethod())
-              .addMethod(getBlockNumberMethod())
-              .addMethod(getGetBlockByNumberMethod())
-              .addMethod(getGetBlockByHashMethod())
-              .addMethod(getGetTransactionByHashMethod())
-              .addMethod(getGetTransactionByBlockNumberAndIndexMethod())
-              .addMethod(getGetTransactionByBlockHashAndIndexMethod())
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}

src/main/java/bdchain/api/grpc/acchain/AccountingChainProto.java

@@ -1,193 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
-public final class AccountingChainProto {
-  private AccountingChainProto() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_Transaction_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_Transaction_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_Block_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_Block_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_BlockNumberRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_BlockNumberRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_BlockNumberResponse_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_BlockNumberResponse_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_GetBlockByNumberRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_GetBlockByNumberRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_GetBlockByHashRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_GetBlockByHashRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_GetTransactionByHashRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_GetTransactionByHashRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_GetTransactionByBlockNumberAndIndexRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_GetTransactionByBlockNumberAndIndexRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable;
-
-  public static com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static  com.google.protobuf.Descriptors.FileDescriptor
-      descriptor;
-  static {
-    java.lang.String[] descriptorData = {
-      "\n\032bdchain/api/ac_chain.proto\022\023bdchain.ap" +
-      "i.acchain\032\033google/protobuf/empty.proto\032\030" +
-      "bdchain/api/common.proto\"\337\001\n\013Transaction" +
-      "\022\024\n\014block_number\030\001 \001(\004\022\022\n\nblock_hash\030\002 \001" +
-      "(\014\022\r\n\005index\030\003 \001(\r\022\014\n\004hash\030\004 \001(\014\0221\n\004type\030" +
-      "\005 \001(\0162#.bdchain.api.common.TransactionTy" +
-      "pe\022\014\n\004from\030\006 \001(\014\022\r\n\005nonce\030\007 \001(\004\022\n\n\002to\030\010 " +
-      "\001(\014\022\014\n\004data\030\t \001(\014\022\t\n\001v\030\n \001(\014\022\t\n\001r\030\013 \001(\014\022" +
-      "\t\n\001s\030\014 \001(\014\"\335\001\n\005Block\022\016\n\006number\030\001 \001(\004\022\014\n\004" +
-      "hash\030\002 \001(\014\022\023\n\013parent_hash\030\003 \001(\014\022\021\n\twitne" +
-      "sses\030\004 \003(\014\022\021\n\ttimestamp\030\005 \001(\003\022\014\n\004size\030\006 " +
-      "\001(\004\022\031\n\021transactions_root\030\007 \001(\014\0226\n\014transa" +
-      "ctions\030\010 \003(\0132 .bdchain.api.acchain.Trans" +
-      "action\022\032\n\022transaction_hashes\030\t \003(\014\"$\n\022Bl" +
-      "ockNumberRequest\022\016\n\006ledger\030\001 \001(\t\"+\n\023Bloc" +
-      "kNumberResponse\022\024\n\014block_number\030\001 \001(\004\"S\n" +
-      "\027GetBlockByNumberRequest\022\016\n\006ledger\030\001 \001(\t" +
-      "\022\016\n\006number\030\002 \001(\004\022\030\n\020full_transaction\030\003 \001" +
-      "(\010\"O\n\025GetBlockByHashRequest\022\016\n\006ledger\030\001 " +
-      "\001(\t\022\014\n\004hash\030\002 \001(\014\022\030\n\020full_transaction\030\003 " +
-      "\001(\010\";\n\033GetTransactionByHashRequest\022\016\n\006le" +
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-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.BlockNumberRequest)
-  private static final bdchain.api.grpc.acchain.BlockNumberRequest DEFAULT_INSTANCE;
-  static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.BlockNumberRequest();
-  }
-
-  public static bdchain.api.grpc.acchain.BlockNumberRequest getDefaultInstance() {
-    return DEFAULT_INSTANCE;
-  }
-
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-      PARSER = new com.google.protobuf.AbstractParser<BlockNumberRequest>() {
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-    public BlockNumberRequest parsePartialFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return new BlockNumberRequest(input, extensionRegistry);
-    }
-  };
-
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-  }
-
-  @java.lang.Override
-  public com.google.protobuf.Parser<BlockNumberRequest> getParserForType() {
-    return PARSER;
-  }
-
-  @java.lang.Override
-  public bdchain.api.grpc.acchain.BlockNumberRequest getDefaultInstanceForType() {
-    return DEFAULT_INSTANCE;
-  }
-
-}
-

src/main/java/bdchain/api/grpc/acchain/BlockNumberRequestOrBuilder.java

@@ -1,19 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
-public interface BlockNumberRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.BlockNumberRequest)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
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-  /**
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-  com.google.protobuf.ByteString
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src/main/java/bdchain/api/grpc/acchain/BlockNumberResponseOrBuilder.java

@@ -1,14 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
-public interface BlockNumberResponseOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.BlockNumberResponse)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
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-   */
-  long getBlockNumber();
-}

src/main/java/bdchain/api/grpc/acchain/BlockOrBuilder.java

@@ -1,157 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
-public interface BlockOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.Block)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
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-   * </pre>
-   *
-   * <code>uint64 number = 1;</code>
-   */
-  long getNumber();
-
-  /**
-   * <pre>
-   * 区块的哈希，当区块处于待确认状态时为`null`
-   * </pre>
-   *
-   * <code>bytes hash = 2;</code>
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-  com.google.protobuf.ByteString getHash();
-
-  /**
-   * <pre>
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-   * </pre>
-   *
-   * <code>bytes parent_hash = 3;</code>
-   */
-  com.google.protobuf.ByteString getParentHash();
-
-  /**
-   * <pre>
-   * 见证者账户地址的数组
-   * </pre>
-   *
-   * <code>repeated bytes witnesses = 4;</code>
-   */
-  java.util.List<com.google.protobuf.ByteString> getWitnessesList();
-  /**
-   * <pre>
-   * 见证者账户地址的数组
-   * </pre>
-   *
-   * <code>repeated bytes witnesses = 4;</code>
-   */
-  int getWitnessesCount();
-  /**
-   * <pre>
-   * 见证者账户地址的数组
-   * </pre>
-   *
-   * <code>repeated bytes witnesses = 4;</code>
-   */
-  com.google.protobuf.ByteString getWitnesses(int index);
-
-  /**
-   * <pre>
-   * 区块产生时的UNIX时间戳
-   * </pre>
-   *
-   * <code>int64 timestamp = 5;</code>
-   */
-  long getTimestamp();
-
-  /**
-   * <pre>
-   * 区块大小的字节数
-   * </pre>
-   *
-   * <code>uint64 size = 6;</code>
-   */
-  long getSize();
-
-  /**
-   * <pre>
-   * 区块的事务树根
-   * </pre>
-   *
-   * <code>bytes transactions_root = 7;</code>
-   */
-  com.google.protobuf.ByteString getTransactionsRoot();
-
-  /**
-   * <pre>
-   * 事务对象的数组，或为空
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.acchain.Transaction transactions = 8;</code>
-   */
-  java.util.List<bdchain.api.grpc.acchain.Transaction> 
-      getTransactionsList();
-  /**
-   * <pre>
-   * 事务对象的数组，或为空
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.acchain.Transaction transactions = 8;</code>
-   */
-  bdchain.api.grpc.acchain.Transaction getTransactions(int index);
-  /**
-   * <pre>
-   * 事务对象的数组，或为空
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.acchain.Transaction transactions = 8;</code>
-   */
-  int getTransactionsCount();
-  /**
-   * <pre>
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-   * </pre>
-   *
-   * <code>repeated .bdchain.api.acchain.Transaction transactions = 8;</code>
-   */
-  java.util.List<? extends bdchain.api.grpc.acchain.TransactionOrBuilder> 
-      getTransactionsOrBuilderList();
-  /**
-   * <pre>
-   * 事务对象的数组，或为空
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.acchain.Transaction transactions = 8;</code>
-   */
-  bdchain.api.grpc.acchain.TransactionOrBuilder getTransactionsOrBuilder(
-      int index);
-
-  /**
-   * <pre>
-   * 20字节的交易哈希的数组，或为空
-   * </pre>
-   *
-   * <code>repeated bytes transaction_hashes = 9;</code>
-   */
-  java.util.List<com.google.protobuf.ByteString> getTransactionHashesList();
-  /**
-   * <pre>
-   * 20字节的交易哈希的数组，或为空
-   * </pre>
-   *
-   * <code>repeated bytes transaction_hashes = 9;</code>
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-  int getTransactionHashesCount();
-  /**
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-   *
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-  com.google.protobuf.ByteString getTransactionHashes(int index);
-}

src/main/java/bdchain/api/grpc/acchain/GetBlockByNumberRequestOrBuilder.java

@@ -1,29 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
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-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.GetBlockByNumberRequest)
-    com.google.protobuf.MessageOrBuilder {
-
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-  boolean getFullTransaction();
-}

src/main/java/bdchain/api/grpc/acchain/GetTransactionByBlockNumberAndIndexRequest.java

@@ -1,655 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
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-    @java.lang.Override
-    public Builder setRepeatedField(
-        com.google.protobuf.Descriptors.FieldDescriptor field,
-        int index, java.lang.Object value) {
-      return super.setRepeatedField(field, index, value);
-    }
-    @java.lang.Override
-    public Builder addRepeatedField(
-        com.google.protobuf.Descriptors.FieldDescriptor field,
-        java.lang.Object value) {
-      return super.addRepeatedField(field, value);
-    }
-    @java.lang.Override
-    public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest) {
-        return mergeFrom((bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest)other);
-      } else {
-        super.mergeFrom(other);
-        return this;
-      }
-    }
-
-    public Builder mergeFrom(bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest other) {
-      if (other == bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest.getDefaultInstance()) return this;
-      if (!other.getLedger().isEmpty()) {
-        ledger_ = other.ledger_;
-        onChanged();
-      }
-      if (other.getBlockNumber() != 0L) {
-        setBlockNumber(other.getBlockNumber());
-      }
-      if (other.getIndex() != 0) {
-        setIndex(other.getIndex());
-      }
-      this.mergeUnknownFields(other.unknownFields);
-      onChanged();
-      return this;
-    }
-
-    @java.lang.Override
-    public final boolean isInitialized() {
-      return true;
-    }
-
-    @java.lang.Override
-    public Builder mergeFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest parsedMessage = null;
-      try {
-        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest) e.getUnfinishedMessage();
-        throw e.unwrapIOException();
-      } finally {
-        if (parsedMessage != null) {
-          mergeFrom(parsedMessage);
-        }
-      }
-      return this;
-    }
-
-    private java.lang.Object ledger_ = "";
-    /**
-     * <code>string ledger = 1;</code>
-     */
-    public java.lang.String getLedger() {
-      java.lang.Object ref = ledger_;
-      if (!(ref instanceof java.lang.String)) {
-        com.google.protobuf.ByteString bs =
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-        java.lang.String s = bs.toStringUtf8();
-        ledger_ = s;
-        return s;
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-        return (java.lang.String) ref;
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-    /**
-     * <code>string ledger = 1;</code>
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-    public com.google.protobuf.ByteString
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-      java.lang.Object ref = ledger_;
-      if (ref instanceof String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        ledger_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
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-    }
-    /**
-     * <code>string ledger = 1;</code>
-     */
-    public Builder setLedger(
-        java.lang.String value) {
-      if (value == null) {
-    throw new NullPointerException();
-  }
-  
-      ledger_ = value;
-      onChanged();
-      return this;
-    }
-    /**
-     * <code>string ledger = 1;</code>
-     */
-    public Builder clearLedger() {
-      
-      ledger_ = getDefaultInstance().getLedger();
-      onChanged();
-      return this;
-    }
-    /**
-     * <code>string ledger = 1;</code>
-     */
-    public Builder setLedgerBytes(
-        com.google.protobuf.ByteString value) {
-      if (value == null) {
-    throw new NullPointerException();
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-  checkByteStringIsUtf8(value);
-      
-      ledger_ = value;
-      onChanged();
-      return this;
-    }
-
-    private long blockNumber_ ;
-    /**
-     * <code>uint64 block_number = 2;</code>
-     */
-    public long getBlockNumber() {
-      return blockNumber_;
-    }
-    /**
-     * <code>uint64 block_number = 2;</code>
-     */
-    public Builder setBlockNumber(long value) {
-      
-      blockNumber_ = value;
-      onChanged();
-      return this;
-    }
-    /**
-     * <code>uint64 block_number = 2;</code>
-     */
-    public Builder clearBlockNumber() {
-      
-      blockNumber_ = 0L;
-      onChanged();
-      return this;
-    }
-
-    private int index_ ;
-    /**
-     * <code>uint32 index = 3;</code>
-     */
-    public int getIndex() {
-      return index_;
-    }
-    /**
-     * <code>uint32 index = 3;</code>
-     */
-    public Builder setIndex(int value) {
-      
-      index_ = value;
-      onChanged();
-      return this;
-    }
-    /**
-     * <code>uint32 index = 3;</code>
-     */
-    public Builder clearIndex() {
-      
-      index_ = 0;
-      onChanged();
-      return this;
-    }
-    @java.lang.Override
-    public final Builder setUnknownFields(
-        final com.google.protobuf.UnknownFieldSet unknownFields) {
-      return super.setUnknownFields(unknownFields);
-    }
-
-    @java.lang.Override
-    public final Builder mergeUnknownFields(
-        final com.google.protobuf.UnknownFieldSet unknownFields) {
-      return super.mergeUnknownFields(unknownFields);
-    }
-
-
-    // @@protoc_insertion_point(builder_scope:bdchain.api.acchain.GetTransactionByBlockNumberAndIndexRequest)
-  }
-
-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.GetTransactionByBlockNumberAndIndexRequest)
-  private static final bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest DEFAULT_INSTANCE;
-  static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest();
-  }
-
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest getDefaultInstance() {
-    return DEFAULT_INSTANCE;
-  }
-
-  private static final com.google.protobuf.Parser<GetTransactionByBlockNumberAndIndexRequest>
-      PARSER = new com.google.protobuf.AbstractParser<GetTransactionByBlockNumberAndIndexRequest>() {
-    @java.lang.Override
-    public GetTransactionByBlockNumberAndIndexRequest parsePartialFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return new GetTransactionByBlockNumberAndIndexRequest(input, extensionRegistry);
-    }
-  };
-
-  public static com.google.protobuf.Parser<GetTransactionByBlockNumberAndIndexRequest> parser() {
-    return PARSER;
-  }
-
-  @java.lang.Override
-  public com.google.protobuf.Parser<GetTransactionByBlockNumberAndIndexRequest> getParserForType() {
-    return PARSER;
-  }
-
-  @java.lang.Override
-  public bdchain.api.grpc.acchain.GetTransactionByBlockNumberAndIndexRequest getDefaultInstanceForType() {
-    return DEFAULT_INSTANCE;
-  }
-
-}
-

src/main/java/bdchain/api/grpc/acchain/GetTransactionByBlockNumberAndIndexRequestOrBuilder.java

@@ -1,29 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
-public interface GetTransactionByBlockNumberAndIndexRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.GetTransactionByBlockNumberAndIndexRequest)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  java.lang.String getLedger();
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  com.google.protobuf.ByteString
-      getLedgerBytes();
-
-  /**
-   * <code>uint64 block_number = 2;</code>
-   */
-  long getBlockNumber();
-
-  /**
-   * <code>uint32 index = 3;</code>
-   */
-  int getIndex();
-}

src/main/java/bdchain/api/grpc/acchain/TransactionOrBuilder.java

@@ -1,125 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
-
-package bdchain.api.grpc.acchain;
-
-public interface TransactionOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.Transaction)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
-   * <pre>
-   * 事务所在的区块的区块号，当事务处于待确认状态时为`null`
-   * </pre>
-   *
-   * <code>uint64 block_number = 1;</code>
-   */
-  long getBlockNumber();
-
-  /**
-   * <pre>
-   * 事务所在的区块的哈希，当事务处于待确认状态时为`null`
-   * </pre>
-   *
-   * <code>bytes block_hash = 2;</code>
-   */
-  com.google.protobuf.ByteString getBlockHash();
-
-  /**
-   * <pre>
-   * 事务在区块中的位置index，当事务处于待确认状态时为`null`
-   * </pre>
-   *
-   * <code>uint32 index = 3;</code>
-   */
-  int getIndex();
-
-  /**
-   * <pre>
-   * 事务的哈希
-   * </pre>
-   *
-   * <code>bytes hash = 4;</code>
-   */
-  com.google.protobuf.ByteString getHash();
-
-  /**
-   * <pre>
-   * 事务类型
-   * </pre>
-   *
-   * <code>.bdchain.api.common.TransactionType type = 5;</code>
-   */
-  int getTypeValue();
-  /**
-   * <pre>
-   * 事务类型
-   * </pre>
-   *
-   * <code>.bdchain.api.common.TransactionType type = 5;</code>
-   */
-  bdchain.api.grpc.common.TransactionType getType();
-
-  /**
-   * <pre>
-   * 发送账户地址
-   * </pre>
-   *
-   * <code>bytes from = 6;</code>
-   */
-  com.google.protobuf.ByteString getFrom();
-
-  /**
-   * <pre>
-   * 这条事务之前发送者所发送的事务数量
-   * </pre>
-   *
-   * <code>uint64 nonce = 7;</code>
-   */
-  long getNonce();
-
-  /**
-   * <pre>
-   * 接收账户地址，或者调用的合约地址，或者`null`如为合约创建
-   * </pre>
-   *
-   * <code>bytes to = 8;</code>
-   */
-  com.google.protobuf.ByteString getTo();
-
-  /**
-   * <pre>
-   * 数据或合约代码
-   * </pre>
-   *
-   * <code>bytes data = 9;</code>
-   */
-  com.google.protobuf.ByteString getData();
-
-  /**
-   * <pre>
-   * ECDSA recovery id
-   * </pre>
-   *
-   * <code>bytes v = 10;</code>
-   */
-  com.google.protobuf.ByteString getV();
-
-  /**
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-   * ECDSA signature r
-   * </pre>
-   *
-   * <code>bytes r = 11;</code>
-   */
-  com.google.protobuf.ByteString getR();
-
-  /**
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-   * ECDSA signature s
-   * </pre>
-   *
-   * <code>bytes s = 12;</code>
-   */
-  com.google.protobuf.ByteString getS();
-}

src/main/java/bdchain/api/grpc/common/CommonProto.java

@@ -1,60 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/common.proto
-
-package bdchain.api.grpc.common;
-
-public final class CommonProto {
-  private CommonProto() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
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-      "\004BE\n\027bdchain.api.grpc.commonB\013CommonProt" +
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-}

src/main/java/bdchain/api/grpc/common/ErrorDetailsProto.java

@@ -1,72 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/error_details.proto
-
-package bdchain.api.grpc.common;
-
-public final class ErrorDetailsProto {
-  private ErrorDetailsProto() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
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-    internal_static_bdchain_api_common_InvalidArgument_descriptor;
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-    internal_static_bdchain_api_common_InvalidArgument_FieldViolation_descriptor;
-  static final 
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-      ".InvalidArgument.FieldViolation\0324\n\016Field" +
-      "Violation\022\r\n\005field\030\001 \001(\t\022\023\n\013description\030" +
-      "\002 \001(\tBO\n\027bdchain.api.grpc.commonB\021ErrorD" +
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-            return null;
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-      .internalBuildGeneratedFileFrom(descriptorData,
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-    internal_static_bdchain_api_common_InvalidArgument_descriptor =
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-    internal_static_bdchain_api_common_InvalidArgument_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_common_InvalidArgument_descriptor,
-        new java.lang.String[] { "FieldViolations", });
-    internal_static_bdchain_api_common_InvalidArgument_FieldViolation_descriptor =
-      internal_static_bdchain_api_common_InvalidArgument_descriptor.getNestedTypes().get(0);
-    internal_static_bdchain_api_common_InvalidArgument_FieldViolation_fieldAccessorTable = new
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-}

src/main/java/bdchain/api/grpc/common/InvalidArgumentOrBuilder.java

@@ -1,53 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/error_details.proto
-
-package bdchain.api.grpc.common;
-
-public interface InvalidArgumentOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.common.InvalidArgument)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
-   * <pre>
-   * Describes all violations in a client request.
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.common.InvalidArgument.FieldViolation field_violations = 1;</code>
-   */
-  java.util.List<bdchain.api.grpc.common.InvalidArgument.FieldViolation> 
-      getFieldViolationsList();
-  /**
-   * <pre>
-   * Describes all violations in a client request.
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.common.InvalidArgument.FieldViolation field_violations = 1;</code>
-   */
-  bdchain.api.grpc.common.InvalidArgument.FieldViolation getFieldViolations(int index);
-  /**
-   * <pre>
-   * Describes all violations in a client request.
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.common.InvalidArgument.FieldViolation field_violations = 1;</code>
-   */
-  int getFieldViolationsCount();
-  /**
-   * <pre>
-   * Describes all violations in a client request.
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.common.InvalidArgument.FieldViolation field_violations = 1;</code>
-   */
-  java.util.List<? extends bdchain.api.grpc.common.InvalidArgument.FieldViolationOrBuilder> 
-      getFieldViolationsOrBuilderList();
-  /**
-   * <pre>
-   * Describes all violations in a client request.
-   * </pre>
-   *
-   * <code>repeated .bdchain.api.common.InvalidArgument.FieldViolation field_violations = 1;</code>
-   */
-  bdchain.api.grpc.common.InvalidArgument.FieldViolationOrBuilder getFieldViolationsOrBuilder(
-      int index);
-}

src/main/java/bdchain/api/grpc/txledger/BlockCountRequestOrBuilder.java

@@ -1,19 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
-
-package bdchain.api.grpc.txledger;
-
-public interface BlockCountRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.BlockCountRequest)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  java.lang.String getLedger();
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  com.google.protobuf.ByteString
-      getLedgerBytes();
-}

src/main/java/bdchain/api/grpc/txledger/BlockCountResponseOrBuilder.java

@@ -1,14 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
-
-package bdchain.api.grpc.txledger;
-
-public interface BlockCountResponseOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.BlockCountResponse)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
-   * <code>uint64 block_count = 1;</code>
-   */
-  long getBlockCount();
-}

src/main/java/bdchain/api/grpc/txledger/GetBlocksRequest.java

@@ -1,729 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
-
-package bdchain.api.grpc.txledger;
-
-/**
- * Protobuf type {@code bdchain.api.txledger.GetBlocksRequest}
- */
-public  final class GetBlocksRequest extends
-    com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.GetBlocksRequest)
-    GetBlocksRequestOrBuilder {
-private static final long serialVersionUID = 0L;
-  // Use GetBlocksRequest.newBuilder() to construct.
-  private GetBlocksRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
-    super(builder);
-  }
-  private GetBlocksRequest() {
-    ledger_ = "";
-  }
-
-  @java.lang.Override
-  public final com.google.protobuf.UnknownFieldSet
-  getUnknownFields() {
-    return this.unknownFields;
-  }
-  private GetBlocksRequest(
-      com.google.protobuf.CodedInputStream input,
-      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-      throws com.google.protobuf.InvalidProtocolBufferException {
-    this();
-    if (extensionRegistry == null) {
-      throw new java.lang.NullPointerException();
-    }
-    int mutable_bitField0_ = 0;
-    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-        com.google.protobuf.UnknownFieldSet.newBuilder();
-    try {
-      boolean done = false;
-      while (!done) {
-        int tag = input.readTag();
-        switch (tag) {
-          case 0:
-            done = true;
-            break;
-          case 10: {
-            java.lang.String s = input.readStringRequireUtf8();
-
-            ledger_ = s;
-            break;
-          }
-          case 16: {
-
-            fromIndex_ = input.readUInt64();
-            break;
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-          case 24: {
-
-            count_ = input.readUInt32();
-            break;
-          }
-          case 32: {
-
-            fullTransaction_ = input.readBool();
-            break;
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-            if (!parseUnknownField(
-                input, unknownFields, extensionRegistry, tag)) {
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src/main/java/bdchain/api/grpc/txledger/GetBlocksResponseOrBuilder.java

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-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
-   */
-  java.util.List<? extends bdchain.api.grpc.txledger.BlockOrBuilder> 
-      getBlocksOrBuilderList();
-  /**
-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
-   */
-  bdchain.api.grpc.txledger.BlockOrBuilder getBlocksOrBuilder(
-      int index);
-}

src/main/java/bdchain/api/grpc/txledger/SendTransactionRequestOrBuilder.java

@@ -1,32 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
-
-package bdchain.api.grpc.txledger;
-
-public interface SendTransactionRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.SendTransactionRequest)
-    com.google.protobuf.MessageOrBuilder {
-
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  java.lang.String getLedger();
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  com.google.protobuf.ByteString
-      getLedgerBytes();
-
-  /**
-   * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
-   */
-  boolean hasTransaction();
-  /**
-   * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
-   */
-  bdchain.api.grpc.txledger.SendTransactionRequest.Transaction getTransaction();
-  /**
-   * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
-   */
-  bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder getTransactionOrBuilder();
-}

src/main/java/bdchain/api/grpc/txledger/TransactionLedgerGrpc.java

@@ -1,655 +0,0 @@
-package bdchain.api.grpc.txledger;
-
-import static io.grpc.MethodDescriptor.generateFullMethodName;
-import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ClientCalls.asyncUnaryCall;
-import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
-import static io.grpc.stub.ClientCalls.blockingUnaryCall;
-import static io.grpc.stub.ClientCalls.futureUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnaryCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
-import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
-
-/**
- */
-@javax.annotation.Generated(
-    value = "by gRPC proto compiler (version 1.20.0)",
-    comments = "Source: bdchain/api/tx_ledger.proto")
-public final class TransactionLedgerGrpc {
-
-  private TransactionLedgerGrpc() {}
-
-  public static final String SERVICE_NAME = "bdchain.api.txledger.TransactionLedger";
-
-  // Static method descriptors that strictly reflect the proto.
-  private static volatile io.grpc.MethodDescriptor<com.google.protobuf.Empty,
-      bdchain.api.grpc.common.ClientVersionResponse> getClientVersionMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "ClientVersion",
-      requestType = com.google.protobuf.Empty.class,
-      responseType = bdchain.api.grpc.common.ClientVersionResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<com.google.protobuf.Empty,
-      bdchain.api.grpc.common.ClientVersionResponse> getClientVersionMethod() {
-    io.grpc.MethodDescriptor<com.google.protobuf.Empty, bdchain.api.grpc.common.ClientVersionResponse> getClientVersionMethod;
-    if ((getClientVersionMethod = TransactionLedgerGrpc.getClientVersionMethod) == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        if ((getClientVersionMethod = TransactionLedgerGrpc.getClientVersionMethod) == null) {
-          TransactionLedgerGrpc.getClientVersionMethod = getClientVersionMethod = 
-              io.grpc.MethodDescriptor.<com.google.protobuf.Empty, bdchain.api.grpc.common.ClientVersionResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.txledger.TransactionLedger", "ClientVersion"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  com.google.protobuf.Empty.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.common.ClientVersionResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("ClientVersion"))
-                  .build();
-          }
-        }
-     }
-     return getClientVersionMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.CreateLedgerRequest,
-      bdchain.api.grpc.txledger.CreateLedgerResponse> getCreateLedgerMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "CreateLedger",
-      requestType = bdchain.api.grpc.txledger.CreateLedgerRequest.class,
-      responseType = bdchain.api.grpc.txledger.CreateLedgerResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.CreateLedgerRequest,
-      bdchain.api.grpc.txledger.CreateLedgerResponse> getCreateLedgerMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.CreateLedgerRequest, bdchain.api.grpc.txledger.CreateLedgerResponse> getCreateLedgerMethod;
-    if ((getCreateLedgerMethod = TransactionLedgerGrpc.getCreateLedgerMethod) == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        if ((getCreateLedgerMethod = TransactionLedgerGrpc.getCreateLedgerMethod) == null) {
-          TransactionLedgerGrpc.getCreateLedgerMethod = getCreateLedgerMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.txledger.CreateLedgerRequest, bdchain.api.grpc.txledger.CreateLedgerResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.txledger.TransactionLedger", "CreateLedger"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.CreateLedgerRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.CreateLedgerResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("CreateLedger"))
-                  .build();
-          }
-        }
-     }
-     return getCreateLedgerMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<com.google.protobuf.Empty,
-      bdchain.api.grpc.txledger.GetLedgersResponse> getGetLedgersMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetLedgers",
-      requestType = com.google.protobuf.Empty.class,
-      responseType = bdchain.api.grpc.txledger.GetLedgersResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<com.google.protobuf.Empty,
-      bdchain.api.grpc.txledger.GetLedgersResponse> getGetLedgersMethod() {
-    io.grpc.MethodDescriptor<com.google.protobuf.Empty, bdchain.api.grpc.txledger.GetLedgersResponse> getGetLedgersMethod;
-    if ((getGetLedgersMethod = TransactionLedgerGrpc.getGetLedgersMethod) == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        if ((getGetLedgersMethod = TransactionLedgerGrpc.getGetLedgersMethod) == null) {
-          TransactionLedgerGrpc.getGetLedgersMethod = getGetLedgersMethod = 
-              io.grpc.MethodDescriptor.<com.google.protobuf.Empty, bdchain.api.grpc.txledger.GetLedgersResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.txledger.TransactionLedger", "GetLedgers"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  com.google.protobuf.Empty.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.GetLedgersResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("GetLedgers"))
-                  .build();
-          }
-        }
-     }
-     return getGetLedgersMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.BlockCountRequest,
-      bdchain.api.grpc.txledger.BlockCountResponse> getBlockCountMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "BlockCount",
-      requestType = bdchain.api.grpc.txledger.BlockCountRequest.class,
-      responseType = bdchain.api.grpc.txledger.BlockCountResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.BlockCountRequest,
-      bdchain.api.grpc.txledger.BlockCountResponse> getBlockCountMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.BlockCountRequest, bdchain.api.grpc.txledger.BlockCountResponse> getBlockCountMethod;
-    if ((getBlockCountMethod = TransactionLedgerGrpc.getBlockCountMethod) == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        if ((getBlockCountMethod = TransactionLedgerGrpc.getBlockCountMethod) == null) {
-          TransactionLedgerGrpc.getBlockCountMethod = getBlockCountMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.txledger.BlockCountRequest, bdchain.api.grpc.txledger.BlockCountResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.txledger.TransactionLedger", "BlockCount"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.BlockCountRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.BlockCountResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("BlockCount"))
-                  .build();
-          }
-        }
-     }
-     return getBlockCountMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.GetBlocksRequest,
-      bdchain.api.grpc.txledger.GetBlocksResponse> getGetBlocksMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "GetBlocks",
-      requestType = bdchain.api.grpc.txledger.GetBlocksRequest.class,
-      responseType = bdchain.api.grpc.txledger.GetBlocksResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.GetBlocksRequest,
-      bdchain.api.grpc.txledger.GetBlocksResponse> getGetBlocksMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.GetBlocksRequest, bdchain.api.grpc.txledger.GetBlocksResponse> getGetBlocksMethod;
-    if ((getGetBlocksMethod = TransactionLedgerGrpc.getGetBlocksMethod) == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        if ((getGetBlocksMethod = TransactionLedgerGrpc.getGetBlocksMethod) == null) {
-          TransactionLedgerGrpc.getGetBlocksMethod = getGetBlocksMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.txledger.GetBlocksRequest, bdchain.api.grpc.txledger.GetBlocksResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.txledger.TransactionLedger", "GetBlocks"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.GetBlocksRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.GetBlocksResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("GetBlocks"))
-                  .build();
-          }
-        }
-     }
-     return getGetBlocksMethod;
-  }
-
-  private static volatile io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.SendTransactionRequest,
-      bdchain.api.grpc.txledger.SendTransactionResponse> getSendTransactionMethod;
-
-  @io.grpc.stub.annotations.RpcMethod(
-      fullMethodName = SERVICE_NAME + '/' + "SendTransaction",
-      requestType = bdchain.api.grpc.txledger.SendTransactionRequest.class,
-      responseType = bdchain.api.grpc.txledger.SendTransactionResponse.class,
-      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
-  public static io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.SendTransactionRequest,
-      bdchain.api.grpc.txledger.SendTransactionResponse> getSendTransactionMethod() {
-    io.grpc.MethodDescriptor<bdchain.api.grpc.txledger.SendTransactionRequest, bdchain.api.grpc.txledger.SendTransactionResponse> getSendTransactionMethod;
-    if ((getSendTransactionMethod = TransactionLedgerGrpc.getSendTransactionMethod) == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        if ((getSendTransactionMethod = TransactionLedgerGrpc.getSendTransactionMethod) == null) {
-          TransactionLedgerGrpc.getSendTransactionMethod = getSendTransactionMethod = 
-              io.grpc.MethodDescriptor.<bdchain.api.grpc.txledger.SendTransactionRequest, bdchain.api.grpc.txledger.SendTransactionResponse>newBuilder()
-              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
-              .setFullMethodName(generateFullMethodName(
-                  "bdchain.api.txledger.TransactionLedger", "SendTransaction"))
-              .setSampledToLocalTracing(true)
-              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.SendTransactionRequest.getDefaultInstance()))
-              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
-                  bdchain.api.grpc.txledger.SendTransactionResponse.getDefaultInstance()))
-                  .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("SendTransaction"))
-                  .build();
-          }
-        }
-     }
-     return getSendTransactionMethod;
-  }
-
-  /**
-   * Creates a new async stub that supports all call types for the service
-   */
-  public static TransactionLedgerStub newStub(io.grpc.Channel channel) {
-    return new TransactionLedgerStub(channel);
-  }
-
-  /**
-   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
-   */
-  public static TransactionLedgerBlockingStub newBlockingStub(
-      io.grpc.Channel channel) {
-    return new TransactionLedgerBlockingStub(channel);
-  }
-
-  /**
-   * Creates a new ListenableFuture-style stub that supports unary calls on the service
-   */
-  public static TransactionLedgerFutureStub newFutureStub(
-      io.grpc.Channel channel) {
-    return new TransactionLedgerFutureStub(channel);
-  }
-
-  /**
-   */
-  public static abstract class TransactionLedgerImplBase implements io.grpc.BindableService {
-
-    /**
-     */
-    public void clientVersion(com.google.protobuf.Empty request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.common.ClientVersionResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getClientVersionMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void createLedger(bdchain.api.grpc.txledger.CreateLedgerRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.CreateLedgerResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getCreateLedgerMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getLedgers(com.google.protobuf.Empty request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.GetLedgersResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetLedgersMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void blockCount(bdchain.api.grpc.txledger.BlockCountRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.BlockCountResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getBlockCountMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void getBlocks(bdchain.api.grpc.txledger.GetBlocksRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.GetBlocksResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getGetBlocksMethod(), responseObserver);
-    }
-
-    /**
-     */
-    public void sendTransaction(bdchain.api.grpc.txledger.SendTransactionRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.SendTransactionResponse> responseObserver) {
-      asyncUnimplementedUnaryCall(getSendTransactionMethod(), responseObserver);
-    }
-
-    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
-      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
-          .addMethod(
-            getClientVersionMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.Empty,
-                bdchain.api.grpc.common.ClientVersionResponse>(
-                  this, METHODID_CLIENT_VERSION)))
-          .addMethod(
-            getCreateLedgerMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.txledger.CreateLedgerRequest,
-                bdchain.api.grpc.txledger.CreateLedgerResponse>(
-                  this, METHODID_CREATE_LEDGER)))
-          .addMethod(
-            getGetLedgersMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                com.google.protobuf.Empty,
-                bdchain.api.grpc.txledger.GetLedgersResponse>(
-                  this, METHODID_GET_LEDGERS)))
-          .addMethod(
-            getBlockCountMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.txledger.BlockCountRequest,
-                bdchain.api.grpc.txledger.BlockCountResponse>(
-                  this, METHODID_BLOCK_COUNT)))
-          .addMethod(
-            getGetBlocksMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.txledger.GetBlocksRequest,
-                bdchain.api.grpc.txledger.GetBlocksResponse>(
-                  this, METHODID_GET_BLOCKS)))
-          .addMethod(
-            getSendTransactionMethod(),
-            asyncUnaryCall(
-              new MethodHandlers<
-                bdchain.api.grpc.txledger.SendTransactionRequest,
-                bdchain.api.grpc.txledger.SendTransactionResponse>(
-                  this, METHODID_SEND_TRANSACTION)))
-          .build();
-    }
-  }
-
-  /**
-   */
-  public static final class TransactionLedgerStub extends io.grpc.stub.AbstractStub<TransactionLedgerStub> {
-    private TransactionLedgerStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TransactionLedgerStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TransactionLedgerStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TransactionLedgerStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public void clientVersion(com.google.protobuf.Empty request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.common.ClientVersionResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getClientVersionMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void createLedger(bdchain.api.grpc.txledger.CreateLedgerRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.CreateLedgerResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getCreateLedgerMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getLedgers(com.google.protobuf.Empty request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.GetLedgersResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetLedgersMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void blockCount(bdchain.api.grpc.txledger.BlockCountRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.BlockCountResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getBlockCountMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void getBlocks(bdchain.api.grpc.txledger.GetBlocksRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.GetBlocksResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getGetBlocksMethod(), getCallOptions()), request, responseObserver);
-    }
-
-    /**
-     */
-    public void sendTransaction(bdchain.api.grpc.txledger.SendTransactionRequest request,
-        io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.SendTransactionResponse> responseObserver) {
-      asyncUnaryCall(
-          getChannel().newCall(getSendTransactionMethod(), getCallOptions()), request, responseObserver);
-    }
-  }
-
-  /**
-   */
-  public static final class TransactionLedgerBlockingStub extends io.grpc.stub.AbstractStub<TransactionLedgerBlockingStub> {
-    private TransactionLedgerBlockingStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TransactionLedgerBlockingStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TransactionLedgerBlockingStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TransactionLedgerBlockingStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.common.ClientVersionResponse clientVersion(com.google.protobuf.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), getClientVersionMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.txledger.CreateLedgerResponse createLedger(bdchain.api.grpc.txledger.CreateLedgerRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getCreateLedgerMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.txledger.GetLedgersResponse getLedgers(com.google.protobuf.Empty request) {
-      return blockingUnaryCall(
-          getChannel(), getGetLedgersMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.txledger.BlockCountResponse blockCount(bdchain.api.grpc.txledger.BlockCountRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getBlockCountMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.txledger.GetBlocksResponse getBlocks(bdchain.api.grpc.txledger.GetBlocksRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getGetBlocksMethod(), getCallOptions(), request);
-    }
-
-    /**
-     */
-    public bdchain.api.grpc.txledger.SendTransactionResponse sendTransaction(bdchain.api.grpc.txledger.SendTransactionRequest request) {
-      return blockingUnaryCall(
-          getChannel(), getSendTransactionMethod(), getCallOptions(), request);
-    }
-  }
-
-  /**
-   */
-  public static final class TransactionLedgerFutureStub extends io.grpc.stub.AbstractStub<TransactionLedgerFutureStub> {
-    private TransactionLedgerFutureStub(io.grpc.Channel channel) {
-      super(channel);
-    }
-
-    private TransactionLedgerFutureStub(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      super(channel, callOptions);
-    }
-
-    @java.lang.Override
-    protected TransactionLedgerFutureStub build(io.grpc.Channel channel,
-        io.grpc.CallOptions callOptions) {
-      return new TransactionLedgerFutureStub(channel, callOptions);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.common.ClientVersionResponse> clientVersion(
-        com.google.protobuf.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(getClientVersionMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.txledger.CreateLedgerResponse> createLedger(
-        bdchain.api.grpc.txledger.CreateLedgerRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getCreateLedgerMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.txledger.GetLedgersResponse> getLedgers(
-        com.google.protobuf.Empty request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetLedgersMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.txledger.BlockCountResponse> blockCount(
-        bdchain.api.grpc.txledger.BlockCountRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getBlockCountMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.txledger.GetBlocksResponse> getBlocks(
-        bdchain.api.grpc.txledger.GetBlocksRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getGetBlocksMethod(), getCallOptions()), request);
-    }
-
-    /**
-     */
-    public com.google.common.util.concurrent.ListenableFuture<bdchain.api.grpc.txledger.SendTransactionResponse> sendTransaction(
-        bdchain.api.grpc.txledger.SendTransactionRequest request) {
-      return futureUnaryCall(
-          getChannel().newCall(getSendTransactionMethod(), getCallOptions()), request);
-    }
-  }
-
-  private static final int METHODID_CLIENT_VERSION = 0;
-  private static final int METHODID_CREATE_LEDGER = 1;
-  private static final int METHODID_GET_LEDGERS = 2;
-  private static final int METHODID_BLOCK_COUNT = 3;
-  private static final int METHODID_GET_BLOCKS = 4;
-  private static final int METHODID_SEND_TRANSACTION = 5;
-
-  private static final class MethodHandlers<Req, Resp> implements
-      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
-      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
-    private final TransactionLedgerImplBase serviceImpl;
-    private final int methodId;
-
-    MethodHandlers(TransactionLedgerImplBase serviceImpl, int methodId) {
-      this.serviceImpl = serviceImpl;
-      this.methodId = methodId;
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        case METHODID_CLIENT_VERSION:
-          serviceImpl.clientVersion((com.google.protobuf.Empty) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.common.ClientVersionResponse>) responseObserver);
-          break;
-        case METHODID_CREATE_LEDGER:
-          serviceImpl.createLedger((bdchain.api.grpc.txledger.CreateLedgerRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.CreateLedgerResponse>) responseObserver);
-          break;
-        case METHODID_GET_LEDGERS:
-          serviceImpl.getLedgers((com.google.protobuf.Empty) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.GetLedgersResponse>) responseObserver);
-          break;
-        case METHODID_BLOCK_COUNT:
-          serviceImpl.blockCount((bdchain.api.grpc.txledger.BlockCountRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.BlockCountResponse>) responseObserver);
-          break;
-        case METHODID_GET_BLOCKS:
-          serviceImpl.getBlocks((bdchain.api.grpc.txledger.GetBlocksRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.GetBlocksResponse>) responseObserver);
-          break;
-        case METHODID_SEND_TRANSACTION:
-          serviceImpl.sendTransaction((bdchain.api.grpc.txledger.SendTransactionRequest) request,
-              (io.grpc.stub.StreamObserver<bdchain.api.grpc.txledger.SendTransactionResponse>) responseObserver);
-          break;
-        default:
-          throw new AssertionError();
-      }
-    }
-
-    @java.lang.Override
-    @java.lang.SuppressWarnings("unchecked")
-    public io.grpc.stub.StreamObserver<Req> invoke(
-        io.grpc.stub.StreamObserver<Resp> responseObserver) {
-      switch (methodId) {
-        default:
-          throw new AssertionError();
-      }
-    }
-  }
-
-  private static abstract class TransactionLedgerBaseDescriptorSupplier
-      implements io.grpc.protobuf.ProtoFileDescriptorSupplier, io.grpc.protobuf.ProtoServiceDescriptorSupplier {
-    TransactionLedgerBaseDescriptorSupplier() {}
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.getDescriptor();
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.ServiceDescriptor getServiceDescriptor() {
-      return getFileDescriptor().findServiceByName("TransactionLedger");
-    }
-  }
-
-  private static final class TransactionLedgerFileDescriptorSupplier
-      extends TransactionLedgerBaseDescriptorSupplier {
-    TransactionLedgerFileDescriptorSupplier() {}
-  }
-
-  private static final class TransactionLedgerMethodDescriptorSupplier
-      extends TransactionLedgerBaseDescriptorSupplier
-      implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
-    private final String methodName;
-
-    TransactionLedgerMethodDescriptorSupplier(String methodName) {
-      this.methodName = methodName;
-    }
-
-    @java.lang.Override
-    public com.google.protobuf.Descriptors.MethodDescriptor getMethodDescriptor() {
-      return getServiceDescriptor().findMethodByName(methodName);
-    }
-  }
-
-  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
-
-  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
-    io.grpc.ServiceDescriptor result = serviceDescriptor;
-    if (result == null) {
-      synchronized (TransactionLedgerGrpc.class) {
-        result = serviceDescriptor;
-        if (result == null) {
-          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
-              .setSchemaDescriptor(new TransactionLedgerFileDescriptorSupplier())
-              .addMethod(getClientVersionMethod())
-              .addMethod(getCreateLedgerMethod())
-              .addMethod(getGetLedgersMethod())
-              .addMethod(getBlockCountMethod())
-              .addMethod(getGetBlocksMethod())
-              .addMethod(getSendTransactionMethod())
-              .build();
-        }
-      }
-    }
-    return result;
-  }
-}

src/main/java/bdchain/api/grpc/txledger/TransactionLedgerProto.java

@@ -1,225 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
-
-package bdchain.api.grpc.txledger;
-
-public final class TransactionLedgerProto {
-  private TransactionLedgerProto() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistryLite registry) {
-  }
-
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-    registerAllExtensions(
-        (com.google.protobuf.ExtensionRegistryLite) registry);
-  }
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_Transaction_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_Transaction_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_Block_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_Block_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_CreateLedgerRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_CreateLedgerRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_CreateLedgerResponse_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_CreateLedgerResponse_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_GetLedgersResponse_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_GetLedgersResponse_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_BlockCountRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_BlockCountRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_BlockCountResponse_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_BlockCountResponse_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_GetBlocksRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_GetBlocksRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_GetBlocksResponse_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_GetBlocksResponse_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_SendTransactionRequest_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_fieldAccessorTable;
-  static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_bdchain_api_txledger_SendTransactionResponse_descriptor;
-  static final 
-    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_bdchain_api_txledger_SendTransactionResponse_fieldAccessorTable;
-
-  public static com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static  com.google.protobuf.Descriptors.FileDescriptor
-      descriptor;
-  static {
-    java.lang.String[] descriptorData = {
-      "\n\033bdchain/api/tx_ledger.proto\022\024bdchain.a" +
-      "pi.txledger\032\033google/protobuf/empty.proto" +
-      "\032\030bdchain/api/common.proto\"\311\001\n\013Transacti" +
-      "on\022\022\n\nblock_hash\030\001 \001(\014\022\r\n\005index\030\002 \001(\r\022\014\n" +
-      "\004hash\030\003 \001(\014\0221\n\004type\030\004 \001(\0162#.bdchain.api." +
-      "common.TransactionType\022\014\n\004from\030\005 \001(\014\022\r\n\005" +
-      "nonce\030\006 \001(\004\022\n\n\002to\030\007 \001(\014\022\014\n\004data\030\010 \001(\014\022\t\n" +
-      "\001v\030\t \001(\014\022\t\n\001r\030\n \001(\014\022\t\n\001s\030\013 \001(\014\"\337\001\n\005Block" +
-      "\022\r\n\005index\030\001 \001(\004\022\014\n\004hash\030\002 \001(\014\022\025\n\rparent_" +
-      "hashes\030\003 \003(\014\022\021\n\twitnesses\030\004 \003(\014\022\021\n\ttimes" +
-      "tamp\030\005 \001(\003\022\014\n\004size\030\006 \001(\004\022\031\n\021transactions" +
-      "_root\030\007 \001(\014\0227\n\014transactions\030\010 \003(\0132!.bdch" +
-      "ain.api.txledger.Transaction\022\032\n\022transact" +
-      "ion_hashes\030\t \003(\014\"#\n\023CreateLedgerRequest\022" +
-      "\014\n\004name\030\001 \001(\t\"\"\n\024CreateLedgerResponse\022\n\n" +
-      "\002ok\030\001 \001(\010\"%\n\022GetLedgersResponse\022\017\n\007ledge" +
-      "rs\030\001 \003(\t\"#\n\021BlockCountRequest\022\016\n\006ledger\030" +
-      "\001 \001(\t\")\n\022BlockCountResponse\022\023\n\013block_cou" +
-      "nt\030\001 \001(\004\"_\n\020GetBlocksRequest\022\016\n\006ledger\030\001" +
-      " \001(\t\022\022\n\nfrom_index\030\002 \001(\004\022\r\n\005count\030\003 \001(\r\022" +
-      "\030\n\020full_transaction\030\004 \001(\010\"@\n\021GetBlocksRe" +
-      "sponse\022+\n\006blocks\030\001 \003(\0132\033.bdchain.api.txl" +
-      "edger.Block\"\341\001\n\026SendTransactionRequest\022\016" +
-      "\n\006ledger\030\001 \001(\t\022M\n\013transaction\030\002 \001(\01328.bd" +
-      "chain.api.txledger.SendTransactionReques" +
-      "t.Transaction\032h\n\013Transaction\0221\n\004type\030\001 \001" +
-      "(\0162#.bdchain.api.common.TransactionType\022" +
-      "\014\n\004from\030\002 \001(\014\022\n\n\002to\030\003 \001(\014\022\014\n\004data\030\004 \001(\014\"" +
-      "\'\n\027SendTransactionResponse\022\014\n\004hash\030\001 \001(\014" +
-      "2\315\004\n\021TransactionLedger\022R\n\rClientVersion\022" +
-      "\026.google.protobuf.Empty\032).bdchain.api.co" +
-      "mmon.ClientVersionResponse\022e\n\014CreateLedg" +
-      "er\022).bdchain.api.txledger.CreateLedgerRe" +
-      "quest\032*.bdchain.api.txledger.CreateLedge" +
-      "rResponse\022N\n\nGetLedgers\022\026.google.protobu" +
-      "f.Empty\032(.bdchain.api.txledger.GetLedger" +
-      "sResponse\022_\n\nBlockCount\022\'.bdchain.api.tx" +
-      "ledger.BlockCountRequest\032(.bdchain.api.t" +
-      "xledger.BlockCountResponse\022\\\n\tGetBlocks\022" +
-      "&.bdchain.api.txledger.GetBlocksRequest\032" +
-      "\'.bdchain.api.txledger.GetBlocksResponse" +
-      "\022n\n\017SendTransaction\022,.bdchain.api.txledg" +
-      "er.SendTransactionRequest\032-.bdchain.api." +
-      "txledger.SendTransactionResponseBT\n\031bdch" +
-      "ain.api.grpc.txledgerB\026TransactionLedger" +
-      "ProtoP\001Z\035bdchain/sdk/api/grpc/txledgerb\006" +
-      "proto3"
-    };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
-        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
-          public com.google.protobuf.ExtensionRegistry assignDescriptors(
-              com.google.protobuf.Descriptors.FileDescriptor root) {
-            descriptor = root;
-            return null;
-          }
-        };
-    com.google.protobuf.Descriptors.FileDescriptor
-      .internalBuildGeneratedFileFrom(descriptorData,
-        new com.google.protobuf.Descriptors.FileDescriptor[] {
-          com.google.protobuf.EmptyProto.getDescriptor(),
-          bdchain.api.grpc.common.CommonProto.getDescriptor(),
-        }, assigner);
-    internal_static_bdchain_api_txledger_Transaction_descriptor =
-      getDescriptor().getMessageTypes().get(0);
-    internal_static_bdchain_api_txledger_Transaction_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_Transaction_descriptor,
-        new java.lang.String[] { "BlockHash", "Index", "Hash", "Type", "From", "Nonce", "To", "Data", "V", "R", "S", });
-    internal_static_bdchain_api_txledger_Block_descriptor =
-      getDescriptor().getMessageTypes().get(1);
-    internal_static_bdchain_api_txledger_Block_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_Block_descriptor,
-        new java.lang.String[] { "Index", "Hash", "ParentHashes", "Witnesses", "Timestamp", "Size", "TransactionsRoot", "Transactions", "TransactionHashes", });
-    internal_static_bdchain_api_txledger_CreateLedgerRequest_descriptor =
-      getDescriptor().getMessageTypes().get(2);
-    internal_static_bdchain_api_txledger_CreateLedgerRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_CreateLedgerRequest_descriptor,
-        new java.lang.String[] { "Name", });
-    internal_static_bdchain_api_txledger_CreateLedgerResponse_descriptor =
-      getDescriptor().getMessageTypes().get(3);
-    internal_static_bdchain_api_txledger_CreateLedgerResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_CreateLedgerResponse_descriptor,
-        new java.lang.String[] { "Ok", });
-    internal_static_bdchain_api_txledger_GetLedgersResponse_descriptor =
-      getDescriptor().getMessageTypes().get(4);
-    internal_static_bdchain_api_txledger_GetLedgersResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_GetLedgersResponse_descriptor,
-        new java.lang.String[] { "Ledgers", });
-    internal_static_bdchain_api_txledger_BlockCountRequest_descriptor =
-      getDescriptor().getMessageTypes().get(5);
-    internal_static_bdchain_api_txledger_BlockCountRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_BlockCountRequest_descriptor,
-        new java.lang.String[] { "Ledger", });
-    internal_static_bdchain_api_txledger_BlockCountResponse_descriptor =
-      getDescriptor().getMessageTypes().get(6);
-    internal_static_bdchain_api_txledger_BlockCountResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_BlockCountResponse_descriptor,
-        new java.lang.String[] { "BlockCount", });
-    internal_static_bdchain_api_txledger_GetBlocksRequest_descriptor =
-      getDescriptor().getMessageTypes().get(7);
-    internal_static_bdchain_api_txledger_GetBlocksRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_GetBlocksRequest_descriptor,
-        new java.lang.String[] { "Ledger", "FromIndex", "Count", "FullTransaction", });
-    internal_static_bdchain_api_txledger_GetBlocksResponse_descriptor =
-      getDescriptor().getMessageTypes().get(8);
-    internal_static_bdchain_api_txledger_GetBlocksResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_GetBlocksResponse_descriptor,
-        new java.lang.String[] { "Blocks", });
-    internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor =
-      getDescriptor().getMessageTypes().get(9);
-    internal_static_bdchain_api_txledger_SendTransactionRequest_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor,
-        new java.lang.String[] { "Ledger", "Transaction", });
-    internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_descriptor =
-      internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor.getNestedTypes().get(0);
-    internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_descriptor,
-        new java.lang.String[] { "Type", "From", "To", "Data", });
-    internal_static_bdchain_api_txledger_SendTransactionResponse_descriptor =
-      getDescriptor().getMessageTypes().get(10);
-    internal_static_bdchain_api_txledger_SendTransactionResponse_fieldAccessorTable = new
-      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_bdchain_api_txledger_SendTransactionResponse_descriptor,
-        new java.lang.String[] { "Hash", });
-    com.google.protobuf.EmptyProto.getDescriptor();
-    bdchain.api.grpc.common.CommonProto.getDescriptor();
-  }
-
-  // @@protoc_insertion_point(outer_class_scope)
-}

src/main/java/bdledger/api/AccountingChainClient.java

@@ -1,8 +1,6 @@
-package bdchain.api;
+package bdledger.api;
 
 import bdchain.api.grpc.acchain.*;
-import bdchain.api.grpc.acchain.AccountingChainGrpc.AccountingChainBlockingStub;
-import bdchain.api.grpc.acchain.AccountingChainGrpc.AccountingChainFutureStub;
 import bdchain.api.grpc.common.ClientVersionResponse;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.protobuf.ByteString;

src/main/java/bdledger/api/TransactionLedgerClient.java

@@ -1,11 +1,8 @@
-package bdchain.api;
+package bdledger.api;
 
-import bdchain.api.grpc.*;
 import bdchain.api.grpc.common.ClientVersionResponse;
 import bdchain.api.grpc.common.TransactionType;
 import bdchain.api.grpc.txledger.*;
-import bdchain.api.grpc.txledger.TransactionLedgerGrpc.TransactionLedgerBlockingStub;
-import bdchain.api.grpc.txledger.TransactionLedgerGrpc.TransactionLedgerFutureStub;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;

src/main/java/bdledger/api/Utils.java

@@ -1,4 +1,4 @@
-package bdchain.api;
+package bdledger.api;
 
 public class Utils {
 

src/main/java/bdledger/api/grpc/common/BlockOrBuilder.java

@@ -1,10 +1,10 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/common.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.common;
 
 public interface BlockOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.Block)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.Block)
     com.google.protobuf.MessageOrBuilder {
 
   /**
@@ -13,6 +13,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>uint64 index = 1;</code>
+   * @return The index.
    */
   long getIndex();
 
@@ -22,6 +23,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>bytes hash = 2;</code>
+   * @return The hash.
    */
   com.google.protobuf.ByteString getHash();
 
@@ -31,6 +33,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes parent_hashes = 3;</code>
+   * @return A list containing the parentHashes.
    */
   java.util.List<com.google.protobuf.ByteString> getParentHashesList();
   /**
@@ -39,6 +42,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes parent_hashes = 3;</code>
+   * @return The count of parentHashes.
    */
   int getParentHashesCount();
   /**
@@ -47,6 +51,8 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes parent_hashes = 3;</code>
+   * @param index The index of the element to return.
+   * @return The parentHashes at the given index.
    */
   com.google.protobuf.ByteString getParentHashes(int index);
 
@@ -56,6 +62,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes witnesses = 4;</code>
+   * @return A list containing the witnesses.
    */
   java.util.List<com.google.protobuf.ByteString> getWitnessesList();
   /**
@@ -64,6 +71,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes witnesses = 4;</code>
+   * @return The count of witnesses.
    */
   int getWitnessesCount();
   /**
@@ -72,6 +80,8 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes witnesses = 4;</code>
+   * @param index The index of the element to return.
+   * @return The witnesses at the given index.
    */
   com.google.protobuf.ByteString getWitnesses(int index);
 
@@ -81,6 +91,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>int64 timestamp = 5;</code>
+   * @return The timestamp.
    */
   long getTimestamp();
 
@@ -90,6 +101,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>uint64 size = 6;</code>
+   * @return The size.
    */
   long getSize();
 
@@ -99,6 +111,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>bytes transactions_root = 7;</code>
+   * @return The transactionsRoot.
    */
   com.google.protobuf.ByteString getTransactionsRoot();
 
@@ -107,24 +120,24 @@ public interface BlockOrBuilder extends
    * 事务对象的数组，或为空
    * </pre>
    *
-   * <code>repeated .bdchain.api.txledger.Transaction transactions = 8;</code>
+   * <code>repeated .bdledger.api.Transaction transactions = 8;</code>
    */
-  java.util.List<bdchain.api.grpc.txledger.Transaction> 
+  java.util.List<bdledger.api.grpc.common.Transaction> 
       getTransactionsList();
   /**
    * <pre>
    * 事务对象的数组，或为空
    * </pre>
    *
-   * <code>repeated .bdchain.api.txledger.Transaction transactions = 8;</code>
+   * <code>repeated .bdledger.api.Transaction transactions = 8;</code>
    */
-  bdchain.api.grpc.txledger.Transaction getTransactions(int index);
+  bdledger.api.grpc.common.Transaction getTransactions(int index);
   /**
    * <pre>
    * 事务对象的数组，或为空
    * </pre>
    *
-   * <code>repeated .bdchain.api.txledger.Transaction transactions = 8;</code>
+   * <code>repeated .bdledger.api.Transaction transactions = 8;</code>
    */
   int getTransactionsCount();
   /**
@@ -132,18 +145,18 @@ public interface BlockOrBuilder extends
    * 事务对象的数组，或为空
    * </pre>
    *
-   * <code>repeated .bdchain.api.txledger.Transaction transactions = 8;</code>
+   * <code>repeated .bdledger.api.Transaction transactions = 8;</code>
    */
-  java.util.List<? extends bdchain.api.grpc.txledger.TransactionOrBuilder> 
+  java.util.List<? extends bdledger.api.grpc.common.TransactionOrBuilder> 
       getTransactionsOrBuilderList();
   /**
    * <pre>
    * 事务对象的数组，或为空
    * </pre>
    *
-   * <code>repeated .bdchain.api.txledger.Transaction transactions = 8;</code>
+   * <code>repeated .bdledger.api.Transaction transactions = 8;</code>
    */
-  bdchain.api.grpc.txledger.TransactionOrBuilder getTransactionsOrBuilder(
+  bdledger.api.grpc.common.TransactionOrBuilder getTransactionsOrBuilder(
       int index);
 
   /**
@@ -152,6 +165,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes transaction_hashes = 9;</code>
+   * @return A list containing the transactionHashes.
    */
   java.util.List<com.google.protobuf.ByteString> getTransactionHashesList();
   /**
@@ -160,6 +174,7 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes transaction_hashes = 9;</code>
+   * @return The count of transactionHashes.
    */
   int getTransactionHashesCount();
   /**
@@ -168,6 +183,8 @@ public interface BlockOrBuilder extends
    * </pre>
    *
    * <code>repeated bytes transaction_hashes = 9;</code>
+   * @param index The index of the element to return.
+   * @return The transactionHashes at the given index.
    */
   com.google.protobuf.ByteString getTransactionHashes(int index);
 }

src/main/java/bdledger/api/grpc/common/CommonProto.java

@@ -0,0 +1,73 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/common.proto
+
+package bdledger.api.grpc.common;
+
+public final class CommonProto {
+  private CommonProto() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_Transaction_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_Transaction_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_Block_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_Block_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\031bdledger/api/common.proto\022\014bdledger.ap" +
+      "i\"\303\001\n\013Transaction\022\022\n\nblock_hash\030\001 \001(\014\022\r\n" +
+      "\005index\030\002 \001(\r\022\014\n\004hash\030\003 \001(\014\022+\n\004type\030\004 \001(\016" +
+      "2\035.bdledger.api.TransactionType\022\014\n\004from\030" +
+      "\005 \001(\014\022\r\n\005nonce\030\006 \001(\004\022\n\n\002to\030\007 \001(\014\022\014\n\004data" +
+      "\030\010 \001(\014\022\t\n\001v\030\t \001(\014\022\t\n\001r\030\n \001(\014\022\t\n\001s\030\013 \001(\014\"" +
+      "\327\001\n\005Block\022\r\n\005index\030\001 \001(\004\022\014\n\004hash\030\002 \001(\014\022\025" +
+      "\n\rparent_hashes\030\003 \003(\014\022\021\n\twitnesses\030\004 \003(\014" +
+      "\022\021\n\ttimestamp\030\005 \001(\003\022\014\n\004size\030\006 \001(\004\022\031\n\021tra" +
+      "nsactions_root\030\007 \001(\014\022/\n\014transactions\030\010 \003" +
+      "(\0132\031.bdledger.api.Transaction\022\032\n\022transac" +
+      "tion_hashes\030\t \003(\014*o\n\017TransactionType\022\n\n\006" +
+      "RECORD\020\000\022\013\n\007MESSAGE\020\001\022\025\n\021CONTRACT_CREATI" +
+      "ON\020\002\022\027\n\023CONTRACT_INVOCATION\020\003\022\023\n\017CONTRAC" +
+      "T_STATUS\020\004BQ\n\030bdledger.api.grpc.commonB\013" +
+      "CommonProtoP\001Z&bdware.org/bdledger/pkg/a" +
+      "pi/grpc/protob\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        });
+    internal_static_bdledger_api_Transaction_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_bdledger_api_Transaction_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_Transaction_descriptor,
+        new java.lang.String[] { "BlockHash", "Index", "Hash", "Type", "From", "Nonce", "To", "Data", "V", "R", "S", });
+    internal_static_bdledger_api_Block_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_bdledger_api_Block_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_Block_descriptor,
+        new java.lang.String[] { "Index", "Hash", "ParentHashes", "Witnesses", "Timestamp", "Size", "TransactionsRoot", "Transactions", "TransactionHashes", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/bdledger/api/grpc/common/ErrorDetailsProto.java

@@ -0,0 +1,64 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/error_details.proto
+
+package bdledger.api.grpc.common;
+
+public final class ErrorDetailsProto {
+  private ErrorDetailsProto() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_InvalidArgument_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_InvalidArgument_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_InvalidArgument_FieldViolation_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_InvalidArgument_FieldViolation_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n bdledger/api/error_details.proto\022\014bdle" +
+      "dger.api\"\217\001\n\017InvalidArgument\022F\n\020field_vi" +
+      "olations\030\001 \003(\0132,.bdledger.api.InvalidArg" +
+      "ument.FieldViolation\0324\n\016FieldViolation\022\r" +
+      "\n\005field\030\001 \001(\t\022\023\n\013description\030\002 \001(\tBW\n\030bd" +
+      "ledger.api.grpc.commonB\021ErrorDetailsProt" +
+      "oP\001Z&bdware.org/bdledger/pkg/api/grpc/pr" +
+      "otob\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        });
+    internal_static_bdledger_api_InvalidArgument_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_bdledger_api_InvalidArgument_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_InvalidArgument_descriptor,
+        new java.lang.String[] { "FieldViolations", });
+    internal_static_bdledger_api_InvalidArgument_FieldViolation_descriptor =
+      internal_static_bdledger_api_InvalidArgument_descriptor.getNestedTypes().get(0);
+    internal_static_bdledger_api_InvalidArgument_FieldViolation_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_InvalidArgument_FieldViolation_descriptor,
+        new java.lang.String[] { "Field", "Description", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/bdledger/api/grpc/common/InvalidArgumentOrBuilder.java

@@ -0,0 +1,53 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/error_details.proto
+
+package bdledger.api.grpc.common;
+
+public interface InvalidArgumentOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.InvalidArgument)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <pre>
+   * Describes all violations in a client request.
+   * </pre>
+   *
+   * <code>repeated .bdledger.api.InvalidArgument.FieldViolation field_violations = 1;</code>
+   */
+  java.util.List<bdledger.api.grpc.common.InvalidArgument.FieldViolation> 
+      getFieldViolationsList();
+  /**
+   * <pre>
+   * Describes all violations in a client request.
+   * </pre>
+   *
+   * <code>repeated .bdledger.api.InvalidArgument.FieldViolation field_violations = 1;</code>
+   */
+  bdledger.api.grpc.common.InvalidArgument.FieldViolation getFieldViolations(int index);
+  /**
+   * <pre>
+   * Describes all violations in a client request.
+   * </pre>
+   *
+   * <code>repeated .bdledger.api.InvalidArgument.FieldViolation field_violations = 1;</code>
+   */
+  int getFieldViolationsCount();
+  /**
+   * <pre>
+   * Describes all violations in a client request.
+   * </pre>
+   *
+   * <code>repeated .bdledger.api.InvalidArgument.FieldViolation field_violations = 1;</code>
+   */
+  java.util.List<? extends bdledger.api.grpc.common.InvalidArgument.FieldViolationOrBuilder> 
+      getFieldViolationsOrBuilderList();
+  /**
+   * <pre>
+   * Describes all violations in a client request.
+   * </pre>
+   *
+   * <code>repeated .bdledger.api.InvalidArgument.FieldViolation field_violations = 1;</code>
+   */
+  bdledger.api.grpc.common.InvalidArgument.FieldViolationOrBuilder getFieldViolationsOrBuilder(
+      int index);
+}

src/main/java/bdledger/api/grpc/common/Transaction.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/common.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.common;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.Transaction}
+ * Protobuf type {@code bdledger.api.Transaction}
  */
 public  final class Transaction extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.Transaction)
+    // @@protoc_insertion_point(message_implements:bdledger.api.Transaction)
     TransactionOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use Transaction.newBuilder() to construct.
@@ -27,6 +27,13 @@ private static final long serialVersionUID = 0L;
     s_ = com.google.protobuf.ByteString.EMPTY;
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new Transaction();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -40,7 +47,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -128,15 +134,15 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_Transaction_descriptor;
+    return bdledger.api.grpc.common.CommonProto.internal_static_bdledger_api_Transaction_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_Transaction_fieldAccessorTable
+    return bdledger.api.grpc.common.CommonProto.internal_static_bdledger_api_Transaction_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.Transaction.class, bdchain.api.grpc.txledger.Transaction.Builder.class);
+            bdledger.api.grpc.common.Transaction.class, bdledger.api.grpc.common.Transaction.Builder.class);
   }
 
   public static final int BLOCK_HASH_FIELD_NUMBER = 1;
@@ -147,6 +153,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes block_hash = 1;</code>
+   * @return The blockHash.
    */
   public com.google.protobuf.ByteString getBlockHash() {
     return blockHash_;
@@ -160,6 +167,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>uint32 index = 2;</code>
+   * @return The index.
    */
   public int getIndex() {
     return index_;
@@ -173,6 +181,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes hash = 3;</code>
+   * @return The hash.
    */
   public com.google.protobuf.ByteString getHash() {
     return hash_;
@@ -185,7 +194,8 @@ private static final long serialVersionUID = 0L;
    * 事务类型
    * </pre>
    *
-   * <code>.bdchain.api.common.TransactionType type = 4;</code>
+   * <code>.bdledger.api.TransactionType type = 4;</code>
+   * @return The enum numeric value on the wire for type.
    */
   public int getTypeValue() {
     return type_;
@@ -195,12 +205,13 @@ private static final long serialVersionUID = 0L;
    * 事务类型
    * </pre>
    *
-   * <code>.bdchain.api.common.TransactionType type = 4;</code>
+   * <code>.bdledger.api.TransactionType type = 4;</code>
+   * @return The type.
    */
-  public bdchain.api.grpc.common.TransactionType getType() {
+  public bdledger.api.grpc.common.TransactionType getType() {
     @SuppressWarnings("deprecation")
-    bdchain.api.grpc.common.TransactionType result = bdchain.api.grpc.common.TransactionType.valueOf(type_);
+    bdledger.api.grpc.common.TransactionType result = bdledger.api.grpc.common.TransactionType.valueOf(type_);
-    return result == null ? bdchain.api.grpc.common.TransactionType.UNRECOGNIZED : result;
+    return result == null ? bdledger.api.grpc.common.TransactionType.UNRECOGNIZED : result;
   }
 
   public static final int FROM_FIELD_NUMBER = 5;
@@ -211,6 +222,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes from = 5;</code>
+   * @return The from.
    */
   public com.google.protobuf.ByteString getFrom() {
     return from_;
@@ -224,6 +236,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>uint64 nonce = 6;</code>
+   * @return The nonce.
    */
   public long getNonce() {
     return nonce_;
@@ -237,6 +250,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes to = 7;</code>
+   * @return The to.
    */
   public com.google.protobuf.ByteString getTo() {
     return to_;
@@ -250,6 +264,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes data = 8;</code>
+   * @return The data.
    */
   public com.google.protobuf.ByteString getData() {
     return data_;
@@ -263,6 +278,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes v = 9;</code>
+   * @return The v.
    */
   public com.google.protobuf.ByteString getV() {
     return v_;
@@ -276,6 +292,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes r = 10;</code>
+   * @return The r.
    */
   public com.google.protobuf.ByteString getR() {
     return r_;
@@ -289,6 +306,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>bytes s = 11;</code>
+   * @return The s.
    */
   public com.google.protobuf.ByteString getS() {
     return s_;
@@ -317,7 +335,7 @@ private static final long serialVersionUID = 0L;
     if (!hash_.isEmpty()) {
       output.writeBytes(3, hash_);
     }
-    if (type_ != bdchain.api.grpc.common.TransactionType.RECORD.getNumber()) {
+    if (type_ != bdledger.api.grpc.common.TransactionType.RECORD.getNumber()) {
       output.writeEnum(4, type_);
     }
     if (!from_.isEmpty()) {
@@ -362,7 +380,7 @@ private static final long serialVersionUID = 0L;
       size += com.google.protobuf.CodedOutputStream
         .computeBytesSize(3, hash_);
     }
-    if (type_ != bdchain.api.grpc.common.TransactionType.RECORD.getNumber()) {
+    if (type_ != bdledger.api.grpc.common.TransactionType.RECORD.getNumber()) {
       size += com.google.protobuf.CodedOutputStream
         .computeEnumSize(4, type_);
     }
@@ -404,10 +422,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.Transaction)) {
+    if (!(obj instanceof bdledger.api.grpc.common.Transaction)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.Transaction other = (bdchain.api.grpc.txledger.Transaction) obj;
+    bdledger.api.grpc.common.Transaction other = (bdledger.api.grpc.common.Transaction) obj;
 
     if (!getBlockHash()
         .equals(other.getBlockHash())) return false;
@@ -469,69 +487,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(byte[] data)
+  public static bdledger.api.grpc.common.Transaction parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.common.Transaction parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.common.Transaction parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseDelimitedFrom(
+  public static bdledger.api.grpc.common.Transaction parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.Transaction parseFrom(
+  public static bdledger.api.grpc.common.Transaction parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -544,7 +562,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.Transaction prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.common.Transaction prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -560,26 +578,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.Transaction}
+   * Protobuf type {@code bdledger.api.Transaction}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.Transaction)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.Transaction)
-      bdchain.api.grpc.txledger.TransactionOrBuilder {
+      bdledger.api.grpc.common.TransactionOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_Transaction_descriptor;
+      return bdledger.api.grpc.common.CommonProto.internal_static_bdledger_api_Transaction_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_Transaction_fieldAccessorTable
+      return bdledger.api.grpc.common.CommonProto.internal_static_bdledger_api_Transaction_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.Transaction.class, bdchain.api.grpc.txledger.Transaction.Builder.class);
+              bdledger.api.grpc.common.Transaction.class, bdledger.api.grpc.common.Transaction.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.Transaction.newBuilder()
+    // Construct using bdledger.api.grpc.common.Transaction.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -625,17 +643,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_Transaction_descriptor;
+      return bdledger.api.grpc.common.CommonProto.internal_static_bdledger_api_Transaction_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.Transaction getDefaultInstanceForType() {
+    public bdledger.api.grpc.common.Transaction getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.Transaction.getDefaultInstance();
+      return bdledger.api.grpc.common.Transaction.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.Transaction build() {
+    public bdledger.api.grpc.common.Transaction build() {
-      bdchain.api.grpc.txledger.Transaction result = buildPartial();
+      bdledger.api.grpc.common.Transaction result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -643,8 +661,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.Transaction buildPartial() {
+    public bdledger.api.grpc.common.Transaction buildPartial() {
-      bdchain.api.grpc.txledger.Transaction result = new bdchain.api.grpc.txledger.Transaction(this);
+      bdledger.api.grpc.common.Transaction result = new bdledger.api.grpc.common.Transaction(this);
       result.blockHash_ = blockHash_;
       result.index_ = index_;
       result.hash_ = hash_;
@@ -694,16 +712,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.Transaction) {
+      if (other instanceof bdledger.api.grpc.common.Transaction) {
-        return mergeFrom((bdchain.api.grpc.txledger.Transaction)other);
+        return mergeFrom((bdledger.api.grpc.common.Transaction)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.Transaction other) {
+    public Builder mergeFrom(bdledger.api.grpc.common.Transaction other) {
-      if (other == bdchain.api.grpc.txledger.Transaction.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.common.Transaction.getDefaultInstance()) return this;
       if (other.getBlockHash() != com.google.protobuf.ByteString.EMPTY) {
         setBlockHash(other.getBlockHash());
       }
@@ -752,11 +770,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.Transaction parsedMessage = null;
+      bdledger.api.grpc.common.Transaction parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.Transaction) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.common.Transaction) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -773,6 +791,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes block_hash = 1;</code>
+     * @return The blockHash.
      */
     public com.google.protobuf.ByteString getBlockHash() {
       return blockHash_;
@@ -783,6 +802,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes block_hash = 1;</code>
+     * @param value The blockHash to set.
+     * @return This builder for chaining.
      */
     public Builder setBlockHash(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -799,6 +820,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes block_hash = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearBlockHash() {
       
@@ -814,6 +836,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>uint32 index = 2;</code>
+     * @return The index.
      */
     public int getIndex() {
       return index_;
@@ -824,6 +847,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>uint32 index = 2;</code>
+     * @param value The index to set.
+     * @return This builder for chaining.
      */
     public Builder setIndex(int value) {
       
@@ -837,6 +862,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>uint32 index = 2;</code>
+     * @return This builder for chaining.
      */
     public Builder clearIndex() {
       
@@ -852,6 +878,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes hash = 3;</code>
+     * @return The hash.
      */
     public com.google.protobuf.ByteString getHash() {
       return hash_;
@@ -862,6 +889,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes hash = 3;</code>
+     * @param value The hash to set.
+     * @return This builder for chaining.
      */
     public Builder setHash(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -878,6 +907,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes hash = 3;</code>
+     * @return This builder for chaining.
      */
     public Builder clearHash() {
       
@@ -892,7 +922,8 @@ private static final long serialVersionUID = 0L;
      * 事务类型
      * </pre>
      *
-     * <code>.bdchain.api.common.TransactionType type = 4;</code>
+     * <code>.bdledger.api.TransactionType type = 4;</code>
+     * @return The enum numeric value on the wire for type.
      */
     public int getTypeValue() {
       return type_;
@@ -902,7 +933,9 @@ private static final long serialVersionUID = 0L;
      * 事务类型
      * </pre>
      *
-     * <code>.bdchain.api.common.TransactionType type = 4;</code>
+     * <code>.bdledger.api.TransactionType type = 4;</code>
+     * @param value The enum numeric value on the wire for type to set.
+     * @return This builder for chaining.
      */
     public Builder setTypeValue(int value) {
       type_ = value;
@@ -914,21 +947,24 @@ private static final long serialVersionUID = 0L;
      * 事务类型
      * </pre>
      *
-     * <code>.bdchain.api.common.TransactionType type = 4;</code>
+     * <code>.bdledger.api.TransactionType type = 4;</code>
+     * @return The type.
      */
-    public bdchain.api.grpc.common.TransactionType getType() {
+    public bdledger.api.grpc.common.TransactionType getType() {
       @SuppressWarnings("deprecation")
-      bdchain.api.grpc.common.TransactionType result = bdchain.api.grpc.common.TransactionType.valueOf(type_);
+      bdledger.api.grpc.common.TransactionType result = bdledger.api.grpc.common.TransactionType.valueOf(type_);
-      return result == null ? bdchain.api.grpc.common.TransactionType.UNRECOGNIZED : result;
+      return result == null ? bdledger.api.grpc.common.TransactionType.UNRECOGNIZED : result;
     }
     /**
      * <pre>
      * 事务类型
      * </pre>
      *
-     * <code>.bdchain.api.common.TransactionType type = 4;</code>
+     * <code>.bdledger.api.TransactionType type = 4;</code>
+     * @param value The type to set.
+     * @return This builder for chaining.
      */
-    public Builder setType(bdchain.api.grpc.common.TransactionType value) {
+    public Builder setType(bdledger.api.grpc.common.TransactionType value) {
       if (value == null) {
         throw new NullPointerException();
       }
@@ -942,7 +978,8 @@ private static final long serialVersionUID = 0L;
      * 事务类型
      * </pre>
      *
-     * <code>.bdchain.api.common.TransactionType type = 4;</code>
+     * <code>.bdledger.api.TransactionType type = 4;</code>
+     * @return This builder for chaining.
      */
     public Builder clearType() {
       
@@ -958,6 +995,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes from = 5;</code>
+     * @return The from.
      */
     public com.google.protobuf.ByteString getFrom() {
       return from_;
@@ -968,6 +1006,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes from = 5;</code>
+     * @param value The from to set.
+     * @return This builder for chaining.
      */
     public Builder setFrom(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -984,6 +1024,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes from = 5;</code>
+     * @return This builder for chaining.
      */
     public Builder clearFrom() {
       
@@ -999,6 +1040,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>uint64 nonce = 6;</code>
+     * @return The nonce.
      */
     public long getNonce() {
       return nonce_;
@@ -1009,6 +1051,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>uint64 nonce = 6;</code>
+     * @param value The nonce to set.
+     * @return This builder for chaining.
      */
     public Builder setNonce(long value) {
       
@@ -1022,6 +1066,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>uint64 nonce = 6;</code>
+     * @return This builder for chaining.
      */
     public Builder clearNonce() {
       
@@ -1037,6 +1082,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes to = 7;</code>
+     * @return The to.
      */
     public com.google.protobuf.ByteString getTo() {
       return to_;
@@ -1047,6 +1093,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes to = 7;</code>
+     * @param value The to to set.
+     * @return This builder for chaining.
      */
     public Builder setTo(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -1063,6 +1111,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes to = 7;</code>
+     * @return This builder for chaining.
      */
     public Builder clearTo() {
       
@@ -1078,6 +1127,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes data = 8;</code>
+     * @return The data.
      */
     public com.google.protobuf.ByteString getData() {
       return data_;
@@ -1088,6 +1138,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes data = 8;</code>
+     * @param value The data to set.
+     * @return This builder for chaining.
      */
     public Builder setData(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -1104,6 +1156,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes data = 8;</code>
+     * @return This builder for chaining.
      */
     public Builder clearData() {
       
@@ -1119,6 +1172,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes v = 9;</code>
+     * @return The v.
      */
     public com.google.protobuf.ByteString getV() {
       return v_;
@@ -1129,6 +1183,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes v = 9;</code>
+     * @param value The v to set.
+     * @return This builder for chaining.
      */
     public Builder setV(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -1145,6 +1201,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes v = 9;</code>
+     * @return This builder for chaining.
      */
     public Builder clearV() {
       
@@ -1160,6 +1217,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes r = 10;</code>
+     * @return The r.
      */
     public com.google.protobuf.ByteString getR() {
       return r_;
@@ -1170,6 +1228,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes r = 10;</code>
+     * @param value The r to set.
+     * @return This builder for chaining.
      */
     public Builder setR(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -1186,6 +1246,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes r = 10;</code>
+     * @return This builder for chaining.
      */
     public Builder clearR() {
       
@@ -1201,6 +1262,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes s = 11;</code>
+     * @return The s.
      */
     public com.google.protobuf.ByteString getS() {
       return s_;
@@ -1211,6 +1273,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes s = 11;</code>
+     * @param value The s to set.
+     * @return This builder for chaining.
      */
     public Builder setS(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -1227,6 +1291,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>bytes s = 11;</code>
+     * @return This builder for chaining.
      */
     public Builder clearS() {
       
@@ -1247,16 +1312,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.Transaction)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.Transaction)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.Transaction)
+  // @@protoc_insertion_point(class_scope:bdledger.api.Transaction)
-  private static final bdchain.api.grpc.txledger.Transaction DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.common.Transaction DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.Transaction();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.common.Transaction();
   }
 
-  public static bdchain.api.grpc.txledger.Transaction getDefaultInstance() {
+  public static bdledger.api.grpc.common.Transaction getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -1281,7 +1346,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.Transaction getDefaultInstanceForType() {
+  public bdledger.api.grpc.common.Transaction getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/common/TransactionOrBuilder.java

@@ -1,10 +1,10 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/common.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.common;
 
 public interface TransactionOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.Transaction)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.Transaction)
     com.google.protobuf.MessageOrBuilder {
 
   /**
@@ -13,6 +13,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes block_hash = 1;</code>
+   * @return The blockHash.
    */
   com.google.protobuf.ByteString getBlockHash();
 
@@ -22,6 +23,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>uint32 index = 2;</code>
+   * @return The index.
    */
   int getIndex();
 
@@ -31,6 +33,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes hash = 3;</code>
+   * @return The hash.
    */
   com.google.protobuf.ByteString getHash();
 
@@ -39,7 +42,8 @@ public interface TransactionOrBuilder extends
    * 事务类型
    * </pre>
    *
-   * <code>.bdchain.api.common.TransactionType type = 4;</code>
+   * <code>.bdledger.api.TransactionType type = 4;</code>
+   * @return The enum numeric value on the wire for type.
    */
   int getTypeValue();
   /**
@@ -47,9 +51,10 @@ public interface TransactionOrBuilder extends
    * 事务类型
    * </pre>
    *
-   * <code>.bdchain.api.common.TransactionType type = 4;</code>
+   * <code>.bdledger.api.TransactionType type = 4;</code>
+   * @return The type.
    */
-  bdchain.api.grpc.common.TransactionType getType();
+  bdledger.api.grpc.common.TransactionType getType();
 
   /**
    * <pre>
@@ -57,6 +62,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes from = 5;</code>
+   * @return The from.
    */
   com.google.protobuf.ByteString getFrom();
 
@@ -66,6 +72,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>uint64 nonce = 6;</code>
+   * @return The nonce.
    */
   long getNonce();
 
@@ -75,6 +82,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes to = 7;</code>
+   * @return The to.
    */
   com.google.protobuf.ByteString getTo();
 
@@ -84,6 +92,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes data = 8;</code>
+   * @return The data.
    */
   com.google.protobuf.ByteString getData();
 
@@ -93,6 +102,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes v = 9;</code>
+   * @return The v.
    */
   com.google.protobuf.ByteString getV();
 
@@ -102,6 +112,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes r = 10;</code>
+   * @return The r.
    */
   com.google.protobuf.ByteString getR();
 
@@ -111,6 +122,7 @@ public interface TransactionOrBuilder extends
    * </pre>
    *
    * <code>bytes s = 11;</code>
+   * @return The s.
    */
   com.google.protobuf.ByteString getS();
 }

src/main/java/bdledger/api/grpc/common/TransactionType.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/common.proto
+// source: bdledger/api/common.proto
 
-package bdchain.api.grpc.common;
+package bdledger.api.grpc.common;
 
 /**
  * <pre>
  * 事务类型 
  * </pre>
  *
- * Protobuf enum {@code bdchain.api.common.TransactionType}
+ * Protobuf enum {@code bdledger.api.TransactionType}
  */
 public enum TransactionType
     implements com.google.protobuf.ProtocolMessageEnum {
@@ -106,6 +106,8 @@ public enum TransactionType
   }
 
   /**
+   * @param value The numeric wire value of the corresponding enum entry.
+   * @return The enum associated with the given numeric wire value.
    * @deprecated Use {@link #forNumber(int)} instead.
    */
   @java.lang.Deprecated
@@ -113,6 +115,10 @@ public enum TransactionType
     return forNumber(value);
   }
 
+  /**
+   * @param value The numeric wire value of the corresponding enum entry.
+   * @return The enum associated with the given numeric wire value.
+   */
   public static TransactionType forNumber(int value) {
     switch (value) {
       case 0: return RECORD;
@@ -146,7 +152,7 @@ public enum TransactionType
   }
   public static final com.google.protobuf.Descriptors.EnumDescriptor
       getDescriptor() {
-    return bdchain.api.grpc.common.CommonProto.getDescriptor().getEnumTypes().get(0);
+    return bdledger.api.grpc.common.CommonProto.getDescriptor().getEnumTypes().get(0);
   }
 
   private static final TransactionType[] VALUES = values();
@@ -169,6 +175,6 @@ public enum TransactionType
     this.value = value;
   }
 
-  // @@protoc_insertion_point(enum_scope:bdchain.api.common.TransactionType)
+  // @@protoc_insertion_point(enum_scope:bdledger.api.TransactionType)
 }
 

src/main/java/bdledger/api/grpc/ledger/CreateLedgerRequest.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.CreateLedgerRequest}
+ * Protobuf type {@code bdledger.api.CreateLedgerRequest}
  */
 public  final class CreateLedgerRequest extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.CreateLedgerRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.CreateLedgerRequest)
     CreateLedgerRequestOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use CreateLedgerRequest.newBuilder() to construct.
@@ -19,6 +19,13 @@ private static final long serialVersionUID = 0L;
     name_ = "";
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new CreateLedgerRequest();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -32,7 +39,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -70,21 +76,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerRequest_descriptor;
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerRequest_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerRequest_fieldAccessorTable
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerRequest_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.CreateLedgerRequest.class, bdchain.api.grpc.txledger.CreateLedgerRequest.Builder.class);
+            bdledger.api.grpc.ledger.CreateLedgerRequest.class, bdledger.api.grpc.ledger.CreateLedgerRequest.Builder.class);
   }
 
   public static final int NAME_FIELD_NUMBER = 1;
   private volatile java.lang.Object name_;
   /**
    * <code>string name = 1;</code>
+   * @return The name.
    */
   public java.lang.String getName() {
     java.lang.Object ref = name_;
@@ -100,6 +107,7 @@ private static final long serialVersionUID = 0L;
   }
   /**
    * <code>string name = 1;</code>
+   * @return The bytes for name.
    */
   public com.google.protobuf.ByteString
       getNameBytes() {
@@ -154,10 +162,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.CreateLedgerRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.ledger.CreateLedgerRequest)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.CreateLedgerRequest other = (bdchain.api.grpc.txledger.CreateLedgerRequest) obj;
+    bdledger.api.grpc.ledger.CreateLedgerRequest other = (bdledger.api.grpc.ledger.CreateLedgerRequest) obj;
 
     if (!getName()
         .equals(other.getName())) return false;
@@ -179,69 +187,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -254,7 +262,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.CreateLedgerRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.ledger.CreateLedgerRequest prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -270,26 +278,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.CreateLedgerRequest}
+   * Protobuf type {@code bdledger.api.CreateLedgerRequest}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.CreateLedgerRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.CreateLedgerRequest)
-      bdchain.api.grpc.txledger.CreateLedgerRequestOrBuilder {
+      bdledger.api.grpc.ledger.CreateLedgerRequestOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerRequest_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerRequest_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerRequest_fieldAccessorTable
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerRequest_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.CreateLedgerRequest.class, bdchain.api.grpc.txledger.CreateLedgerRequest.Builder.class);
+              bdledger.api.grpc.ledger.CreateLedgerRequest.class, bdledger.api.grpc.ledger.CreateLedgerRequest.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.CreateLedgerRequest.newBuilder()
+    // Construct using bdledger.api.grpc.ledger.CreateLedgerRequest.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -315,17 +323,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerRequest_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerRequest_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.CreateLedgerRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.ledger.CreateLedgerRequest getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.CreateLedgerRequest.getDefaultInstance();
+      return bdledger.api.grpc.ledger.CreateLedgerRequest.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.CreateLedgerRequest build() {
+    public bdledger.api.grpc.ledger.CreateLedgerRequest build() {
-      bdchain.api.grpc.txledger.CreateLedgerRequest result = buildPartial();
+      bdledger.api.grpc.ledger.CreateLedgerRequest result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -333,8 +341,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.CreateLedgerRequest buildPartial() {
+    public bdledger.api.grpc.ledger.CreateLedgerRequest buildPartial() {
-      bdchain.api.grpc.txledger.CreateLedgerRequest result = new bdchain.api.grpc.txledger.CreateLedgerRequest(this);
+      bdledger.api.grpc.ledger.CreateLedgerRequest result = new bdledger.api.grpc.ledger.CreateLedgerRequest(this);
       result.name_ = name_;
       onBuilt();
       return result;
@@ -374,16 +382,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.CreateLedgerRequest) {
+      if (other instanceof bdledger.api.grpc.ledger.CreateLedgerRequest) {
-        return mergeFrom((bdchain.api.grpc.txledger.CreateLedgerRequest)other);
+        return mergeFrom((bdledger.api.grpc.ledger.CreateLedgerRequest)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.CreateLedgerRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.ledger.CreateLedgerRequest other) {
-      if (other == bdchain.api.grpc.txledger.CreateLedgerRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.ledger.CreateLedgerRequest.getDefaultInstance()) return this;
       if (!other.getName().isEmpty()) {
         name_ = other.name_;
         onChanged();
@@ -403,11 +411,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.CreateLedgerRequest parsedMessage = null;
+      bdledger.api.grpc.ledger.CreateLedgerRequest parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.CreateLedgerRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.ledger.CreateLedgerRequest) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -420,6 +428,7 @@ private static final long serialVersionUID = 0L;
     private java.lang.Object name_ = "";
     /**
      * <code>string name = 1;</code>
+     * @return The name.
      */
     public java.lang.String getName() {
       java.lang.Object ref = name_;
@@ -435,6 +444,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string name = 1;</code>
+     * @return The bytes for name.
      */
     public com.google.protobuf.ByteString
         getNameBytes() {
@@ -451,6 +461,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string name = 1;</code>
+     * @param value The name to set.
+     * @return This builder for chaining.
      */
     public Builder setName(
         java.lang.String value) {
@@ -464,6 +476,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string name = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearName() {
       
@@ -473,6 +486,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string name = 1;</code>
+     * @param value The bytes for name to set.
+     * @return This builder for chaining.
      */
     public Builder setNameBytes(
         com.google.protobuf.ByteString value) {
@@ -498,16 +513,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.CreateLedgerRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.CreateLedgerRequest)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.CreateLedgerRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.CreateLedgerRequest)
-  private static final bdchain.api.grpc.txledger.CreateLedgerRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.ledger.CreateLedgerRequest DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.CreateLedgerRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.ledger.CreateLedgerRequest();
   }
 
-  public static bdchain.api.grpc.txledger.CreateLedgerRequest getDefaultInstance() {
+  public static bdledger.api.grpc.ledger.CreateLedgerRequest getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -532,7 +547,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.CreateLedgerRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.ledger.CreateLedgerRequest getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/ledger/CreateLedgerRequestOrBuilder.java

@@ -1,18 +1,20 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 public interface CreateLedgerRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.CreateLedgerRequest)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.CreateLedgerRequest)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>string name = 1;</code>
+   * @return The name.
    */
   java.lang.String getName();
   /**
    * <code>string name = 1;</code>
+   * @return The bytes for name.
    */
   com.google.protobuf.ByteString
       getNameBytes();

src/main/java/bdledger/api/grpc/ledger/CreateLedgerResponse.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.CreateLedgerResponse}
+ * Protobuf type {@code bdledger.api.CreateLedgerResponse}
  */
 public  final class CreateLedgerResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.CreateLedgerResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.CreateLedgerResponse)
     CreateLedgerResponseOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use CreateLedgerResponse.newBuilder() to construct.
@@ -18,6 +18,13 @@ private static final long serialVersionUID = 0L;
   private CreateLedgerResponse() {
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new CreateLedgerResponse();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -31,7 +38,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -68,21 +74,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerResponse_descriptor;
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerResponse_fieldAccessorTable
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.CreateLedgerResponse.class, bdchain.api.grpc.txledger.CreateLedgerResponse.Builder.class);
+            bdledger.api.grpc.ledger.CreateLedgerResponse.class, bdledger.api.grpc.ledger.CreateLedgerResponse.Builder.class);
   }
 
   public static final int OK_FIELD_NUMBER = 1;
   private boolean ok_;
   /**
    * <code>bool ok = 1;</code>
+   * @return The ok.
    */
   public boolean getOk() {
     return ok_;
@@ -128,10 +135,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.CreateLedgerResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.ledger.CreateLedgerResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.CreateLedgerResponse other = (bdchain.api.grpc.txledger.CreateLedgerResponse) obj;
+    bdledger.api.grpc.ledger.CreateLedgerResponse other = (bdledger.api.grpc.ledger.CreateLedgerResponse) obj;
 
     if (getOk()
         != other.getOk()) return false;
@@ -154,69 +161,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse parseFrom(
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -229,7 +236,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.CreateLedgerResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.ledger.CreateLedgerResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -245,26 +252,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.CreateLedgerResponse}
+   * Protobuf type {@code bdledger.api.CreateLedgerResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.CreateLedgerResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.CreateLedgerResponse)
-      bdchain.api.grpc.txledger.CreateLedgerResponseOrBuilder {
+      bdledger.api.grpc.ledger.CreateLedgerResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerResponse_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerResponse_fieldAccessorTable
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.CreateLedgerResponse.class, bdchain.api.grpc.txledger.CreateLedgerResponse.Builder.class);
+              bdledger.api.grpc.ledger.CreateLedgerResponse.class, bdledger.api.grpc.ledger.CreateLedgerResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.CreateLedgerResponse.newBuilder()
+    // Construct using bdledger.api.grpc.ledger.CreateLedgerResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -290,17 +297,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_CreateLedgerResponse_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_CreateLedgerResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.CreateLedgerResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.ledger.CreateLedgerResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.CreateLedgerResponse.getDefaultInstance();
+      return bdledger.api.grpc.ledger.CreateLedgerResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.CreateLedgerResponse build() {
+    public bdledger.api.grpc.ledger.CreateLedgerResponse build() {
-      bdchain.api.grpc.txledger.CreateLedgerResponse result = buildPartial();
+      bdledger.api.grpc.ledger.CreateLedgerResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -308,8 +315,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.CreateLedgerResponse buildPartial() {
+    public bdledger.api.grpc.ledger.CreateLedgerResponse buildPartial() {
-      bdchain.api.grpc.txledger.CreateLedgerResponse result = new bdchain.api.grpc.txledger.CreateLedgerResponse(this);
+      bdledger.api.grpc.ledger.CreateLedgerResponse result = new bdledger.api.grpc.ledger.CreateLedgerResponse(this);
       result.ok_ = ok_;
       onBuilt();
       return result;
@@ -349,16 +356,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.CreateLedgerResponse) {
+      if (other instanceof bdledger.api.grpc.ledger.CreateLedgerResponse) {
-        return mergeFrom((bdchain.api.grpc.txledger.CreateLedgerResponse)other);
+        return mergeFrom((bdledger.api.grpc.ledger.CreateLedgerResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.CreateLedgerResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.ledger.CreateLedgerResponse other) {
-      if (other == bdchain.api.grpc.txledger.CreateLedgerResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.ledger.CreateLedgerResponse.getDefaultInstance()) return this;
       if (other.getOk() != false) {
         setOk(other.getOk());
       }
@@ -377,11 +384,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.CreateLedgerResponse parsedMessage = null;
+      bdledger.api.grpc.ledger.CreateLedgerResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.CreateLedgerResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.ledger.CreateLedgerResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -394,12 +401,15 @@ private static final long serialVersionUID = 0L;
     private boolean ok_ ;
     /**
      * <code>bool ok = 1;</code>
+     * @return The ok.
      */
     public boolean getOk() {
       return ok_;
     }
     /**
      * <code>bool ok = 1;</code>
+     * @param value The ok to set.
+     * @return This builder for chaining.
      */
     public Builder setOk(boolean value) {
       
@@ -409,6 +419,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>bool ok = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearOk() {
       
@@ -429,16 +440,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.CreateLedgerResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.CreateLedgerResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.CreateLedgerResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.CreateLedgerResponse)
-  private static final bdchain.api.grpc.txledger.CreateLedgerResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.ledger.CreateLedgerResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.CreateLedgerResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.ledger.CreateLedgerResponse();
   }
 
-  public static bdchain.api.grpc.txledger.CreateLedgerResponse getDefaultInstance() {
+  public static bdledger.api.grpc.ledger.CreateLedgerResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -463,7 +474,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.CreateLedgerResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.ledger.CreateLedgerResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/ledger/CreateLedgerResponseOrBuilder.java

@@ -1,14 +1,15 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 public interface CreateLedgerResponseOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.CreateLedgerResponse)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.CreateLedgerResponse)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>bool ok = 1;</code>
+   * @return The ok.
    */
   boolean getOk();
 }

src/main/java/bdledger/api/grpc/ledger/GetLedgersResponse.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.GetLedgersResponse}
+ * Protobuf type {@code bdledger.api.GetLedgersResponse}
  */
 public  final class GetLedgersResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.GetLedgersResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetLedgersResponse)
     GetLedgersResponseOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use GetLedgersResponse.newBuilder() to construct.
@@ -19,6 +19,13 @@ private static final long serialVersionUID = 0L;
     ledgers_ = com.google.protobuf.LazyStringArrayList.EMPTY;
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetLedgersResponse();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -76,21 +83,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetLedgersResponse_descriptor;
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_GetLedgersResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetLedgersResponse_fieldAccessorTable
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_GetLedgersResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.GetLedgersResponse.class, bdchain.api.grpc.txledger.GetLedgersResponse.Builder.class);
+            bdledger.api.grpc.ledger.GetLedgersResponse.class, bdledger.api.grpc.ledger.GetLedgersResponse.Builder.class);
   }
 
   public static final int LEDGERS_FIELD_NUMBER = 1;
   private com.google.protobuf.LazyStringList ledgers_;
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @return A list containing the ledgers.
    */
   public com.google.protobuf.ProtocolStringList
       getLedgersList() {
@@ -98,18 +106,23 @@ private static final long serialVersionUID = 0L;
   }
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @return The count of ledgers.
    */
   public int getLedgersCount() {
     return ledgers_.size();
   }
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @param index The index of the element to return.
+   * @return The ledgers at the given index.
    */
   public java.lang.String getLedgers(int index) {
     return ledgers_.get(index);
   }
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @param index The index of the value to return.
+   * @return The bytes of the ledgers at the given index.
    */
   public com.google.protobuf.ByteString
       getLedgersBytes(int index) {
@@ -160,10 +173,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.GetLedgersResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.ledger.GetLedgersResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.GetLedgersResponse other = (bdchain.api.grpc.txledger.GetLedgersResponse) obj;
+    bdledger.api.grpc.ledger.GetLedgersResponse other = (bdledger.api.grpc.ledger.GetLedgersResponse) obj;
 
     if (!getLedgersList()
         .equals(other.getLedgersList())) return false;
@@ -187,69 +200,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.GetLedgersResponse parseFrom(
+  public static bdledger.api.grpc.ledger.GetLedgersResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -262,7 +275,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.GetLedgersResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.ledger.GetLedgersResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -278,26 +291,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.GetLedgersResponse}
+   * Protobuf type {@code bdledger.api.GetLedgersResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.GetLedgersResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetLedgersResponse)
-      bdchain.api.grpc.txledger.GetLedgersResponseOrBuilder {
+      bdledger.api.grpc.ledger.GetLedgersResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetLedgersResponse_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_GetLedgersResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetLedgersResponse_fieldAccessorTable
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_GetLedgersResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.GetLedgersResponse.class, bdchain.api.grpc.txledger.GetLedgersResponse.Builder.class);
+              bdledger.api.grpc.ledger.GetLedgersResponse.class, bdledger.api.grpc.ledger.GetLedgersResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.GetLedgersResponse.newBuilder()
+    // Construct using bdledger.api.grpc.ledger.GetLedgersResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -323,17 +336,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetLedgersResponse_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_GetLedgersResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.GetLedgersResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.ledger.GetLedgersResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.GetLedgersResponse.getDefaultInstance();
+      return bdledger.api.grpc.ledger.GetLedgersResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.GetLedgersResponse build() {
+    public bdledger.api.grpc.ledger.GetLedgersResponse build() {
-      bdchain.api.grpc.txledger.GetLedgersResponse result = buildPartial();
+      bdledger.api.grpc.ledger.GetLedgersResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -341,8 +354,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.GetLedgersResponse buildPartial() {
+    public bdledger.api.grpc.ledger.GetLedgersResponse buildPartial() {
-      bdchain.api.grpc.txledger.GetLedgersResponse result = new bdchain.api.grpc.txledger.GetLedgersResponse(this);
+      bdledger.api.grpc.ledger.GetLedgersResponse result = new bdledger.api.grpc.ledger.GetLedgersResponse(this);
       int from_bitField0_ = bitField0_;
       if (((bitField0_ & 0x00000001) != 0)) {
         ledgers_ = ledgers_.getUnmodifiableView();
@@ -387,16 +400,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.GetLedgersResponse) {
+      if (other instanceof bdledger.api.grpc.ledger.GetLedgersResponse) {
-        return mergeFrom((bdchain.api.grpc.txledger.GetLedgersResponse)other);
+        return mergeFrom((bdledger.api.grpc.ledger.GetLedgersResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.GetLedgersResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.ledger.GetLedgersResponse other) {
-      if (other == bdchain.api.grpc.txledger.GetLedgersResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.ledger.GetLedgersResponse.getDefaultInstance()) return this;
       if (!other.ledgers_.isEmpty()) {
         if (ledgers_.isEmpty()) {
           ledgers_ = other.ledgers_;
@@ -422,11 +435,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.GetLedgersResponse parsedMessage = null;
+      bdledger.api.grpc.ledger.GetLedgersResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.GetLedgersResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.ledger.GetLedgersResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -446,6 +459,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @return A list containing the ledgers.
      */
     public com.google.protobuf.ProtocolStringList
         getLedgersList() {
@@ -453,18 +467,23 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @return The count of ledgers.
      */
     public int getLedgersCount() {
       return ledgers_.size();
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @param index The index of the element to return.
+     * @return The ledgers at the given index.
      */
     public java.lang.String getLedgers(int index) {
       return ledgers_.get(index);
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @param index The index of the value to return.
+     * @return The bytes of the ledgers at the given index.
      */
     public com.google.protobuf.ByteString
         getLedgersBytes(int index) {
@@ -472,6 +491,9 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @param index The index to set the value at.
+     * @param value The ledgers to set.
+     * @return This builder for chaining.
      */
     public Builder setLedgers(
         int index, java.lang.String value) {
@@ -485,6 +507,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @param value The ledgers to add.
+     * @return This builder for chaining.
      */
     public Builder addLedgers(
         java.lang.String value) {
@@ -498,6 +522,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @param values The ledgers to add.
+     * @return This builder for chaining.
      */
     public Builder addAllLedgers(
         java.lang.Iterable<java.lang.String> values) {
@@ -509,6 +535,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearLedgers() {
       ledgers_ = com.google.protobuf.LazyStringArrayList.EMPTY;
@@ -518,6 +545,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>repeated string ledgers = 1;</code>
+     * @param value The bytes of the ledgers to add.
+     * @return This builder for chaining.
      */
     public Builder addLedgersBytes(
         com.google.protobuf.ByteString value) {
@@ -543,16 +572,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.GetLedgersResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetLedgersResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.GetLedgersResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetLedgersResponse)
-  private static final bdchain.api.grpc.txledger.GetLedgersResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.ledger.GetLedgersResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.GetLedgersResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.ledger.GetLedgersResponse();
   }
 
-  public static bdchain.api.grpc.txledger.GetLedgersResponse getDefaultInstance() {
+  public static bdledger.api.grpc.ledger.GetLedgersResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -577,7 +606,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.GetLedgersResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.ledger.GetLedgersResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/ledger/GetLedgersResponseOrBuilder.java

@@ -1,27 +1,33 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 public interface GetLedgersResponseOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.GetLedgersResponse)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetLedgersResponse)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @return A list containing the ledgers.
    */
   java.util.List<java.lang.String>
       getLedgersList();
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @return The count of ledgers.
    */
   int getLedgersCount();
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @param index The index of the element to return.
+   * @return The ledgers at the given index.
    */
   java.lang.String getLedgers(int index);
   /**
    * <code>repeated string ledgers = 1;</code>
+   * @param index The index of the value to return.
+   * @return The bytes of the ledgers at the given index.
    */
   com.google.protobuf.ByteString
       getLedgersBytes(int index);

src/main/java/bdledger/api/grpc/ledger/LedgerProto.java

@@ -0,0 +1,125 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/ledger.proto
+
+package bdledger.api.grpc.ledger;
+
+public final class LedgerProto {
+  private LedgerProto() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_CreateLedgerRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_CreateLedgerRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_CreateLedgerResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_CreateLedgerResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetLedgersResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetLedgersResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_SendTransactionRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_SendTransactionRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_SendTransactionRequest_Transaction_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_SendTransactionRequest_Transaction_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_SendTransactionResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_SendTransactionResponse_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\031bdledger/api/ledger.proto\022\014bdledger.ap" +
+      "i\032\033google/protobuf/empty.proto\032\031bdledger" +
+      "/api/common.proto\"#\n\023CreateLedgerRequest" +
+      "\022\014\n\004name\030\001 \001(\t\"\"\n\024CreateLedgerResponse\022\n" +
+      "\n\002ok\030\001 \001(\010\"%\n\022GetLedgersResponse\022\017\n\007ledg" +
+      "ers\030\001 \003(\t\"\323\001\n\026SendTransactionRequest\022\016\n\006" +
+      "ledger\030\001 \001(\t\022E\n\013transaction\030\002 \001(\01320.bdle" +
+      "dger.api.SendTransactionRequest.Transact" +
+      "ion\032b\n\013Transaction\022+\n\004type\030\001 \001(\0162\035.bdled" +
+      "ger.api.TransactionType\022\014\n\004from\030\002 \001(\014\022\n\n" +
+      "\002to\030\003 \001(\014\022\014\n\004data\030\004 \001(\014\"\'\n\027SendTransacti" +
+      "onResponse\022\014\n\004hash\030\001 \001(\0142\222\002\n\021Transaction" +
+      "Ledger\022U\n\014CreateLedger\022!.bdledger.api.Cr" +
+      "eateLedgerRequest\032\".bdledger.api.CreateL" +
+      "edgerResponse\022F\n\nGetLedgers\022\026.google.pro" +
+      "tobuf.Empty\032 .bdledger.api.GetLedgersRes" +
+      "ponse\022^\n\017SendTransaction\022$.bdledger.api." +
+      "SendTransactionRequest\032%.bdledger.api.Se" +
+      "ndTransactionResponseBQ\n\030bdledger.api.gr" +
+      "pc.ledgerB\013LedgerProtoP\001Z&bdware.org/bdl" +
+      "edger/pkg/api/grpc/protob\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+          com.google.protobuf.EmptyProto.getDescriptor(),
+          bdledger.api.grpc.common.CommonProto.getDescriptor(),
+        });
+    internal_static_bdledger_api_CreateLedgerRequest_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_bdledger_api_CreateLedgerRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_CreateLedgerRequest_descriptor,
+        new java.lang.String[] { "Name", });
+    internal_static_bdledger_api_CreateLedgerResponse_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_bdledger_api_CreateLedgerResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_CreateLedgerResponse_descriptor,
+        new java.lang.String[] { "Ok", });
+    internal_static_bdledger_api_GetLedgersResponse_descriptor =
+      getDescriptor().getMessageTypes().get(2);
+    internal_static_bdledger_api_GetLedgersResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetLedgersResponse_descriptor,
+        new java.lang.String[] { "Ledgers", });
+    internal_static_bdledger_api_SendTransactionRequest_descriptor =
+      getDescriptor().getMessageTypes().get(3);
+    internal_static_bdledger_api_SendTransactionRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_SendTransactionRequest_descriptor,
+        new java.lang.String[] { "Ledger", "Transaction", });
+    internal_static_bdledger_api_SendTransactionRequest_Transaction_descriptor =
+      internal_static_bdledger_api_SendTransactionRequest_descriptor.getNestedTypes().get(0);
+    internal_static_bdledger_api_SendTransactionRequest_Transaction_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_SendTransactionRequest_Transaction_descriptor,
+        new java.lang.String[] { "Type", "From", "To", "Data", });
+    internal_static_bdledger_api_SendTransactionResponse_descriptor =
+      getDescriptor().getMessageTypes().get(4);
+    internal_static_bdledger_api_SendTransactionResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_SendTransactionResponse_descriptor,
+        new java.lang.String[] { "Hash", });
+    com.google.protobuf.EmptyProto.getDescriptor();
+    bdledger.api.grpc.common.CommonProto.getDescriptor();
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/bdledger/api/grpc/ledger/SendTransactionRequest.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.SendTransactionRequest}
+ * Protobuf type {@code bdledger.api.SendTransactionRequest}
  */
 public  final class SendTransactionRequest extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.SendTransactionRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.SendTransactionRequest)
     SendTransactionRequestOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use SendTransactionRequest.newBuilder() to construct.
@@ -19,6 +19,13 @@ private static final long serialVersionUID = 0L;
     ledger_ = "";
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new SendTransactionRequest();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -32,7 +39,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -50,11 +56,11 @@ private static final long serialVersionUID = 0L;
             break;
           }
           case 18: {
-            bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder subBuilder = null;
+            bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder subBuilder = null;
             if (transaction_ != null) {
               subBuilder = transaction_.toBuilder();
             }
-            transaction_ = input.readMessage(bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.parser(), extensionRegistry);
+            transaction_ = input.readMessage(bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.parser(), extensionRegistry);
             if (subBuilder != null) {
               subBuilder.mergeFrom(transaction_);
               transaction_ = subBuilder.buildPartial();
@@ -83,51 +89,56 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor;
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_fieldAccessorTable
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.SendTransactionRequest.class, bdchain.api.grpc.txledger.SendTransactionRequest.Builder.class);
+            bdledger.api.grpc.ledger.SendTransactionRequest.class, bdledger.api.grpc.ledger.SendTransactionRequest.Builder.class);
   }
 
   public interface TransactionOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.SendTransactionRequest.Transaction)
+      // @@protoc_insertion_point(interface_extends:bdledger.api.SendTransactionRequest.Transaction)
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>.bdchain.api.common.TransactionType type = 1;</code>
+     * <code>.bdledger.api.TransactionType type = 1;</code>
+     * @return The enum numeric value on the wire for type.
      */
     int getTypeValue();
     /**
-     * <code>.bdchain.api.common.TransactionType type = 1;</code>
+     * <code>.bdledger.api.TransactionType type = 1;</code>
+     * @return The type.
      */
-    bdchain.api.grpc.common.TransactionType getType();
+    bdledger.api.grpc.common.TransactionType getType();
 
     /**
      * <code>bytes from = 2;</code>
+     * @return The from.
      */
     com.google.protobuf.ByteString getFrom();
 
     /**
      * <code>bytes to = 3;</code>
+     * @return The to.
      */
     com.google.protobuf.ByteString getTo();
 
     /**
      * <code>bytes data = 4;</code>
+     * @return The data.
      */
     com.google.protobuf.ByteString getData();
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.SendTransactionRequest.Transaction}
+   * Protobuf type {@code bdledger.api.SendTransactionRequest.Transaction}
    */
   public  static final class Transaction extends
       com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:bdchain.api.txledger.SendTransactionRequest.Transaction)
+      // @@protoc_insertion_point(message_implements:bdledger.api.SendTransactionRequest.Transaction)
       TransactionOrBuilder {
   private static final long serialVersionUID = 0L;
     // Use Transaction.newBuilder() to construct.
@@ -141,6 +152,13 @@ private static final long serialVersionUID = 0L;
       data_ = com.google.protobuf.ByteString.EMPTY;
     }
 
+    @java.lang.Override
+    @SuppressWarnings({"unused"})
+    protected java.lang.Object newInstance(
+        UnusedPrivateParameter unused) {
+      return new Transaction();
+    }
+
     @java.lang.Override
     public final com.google.protobuf.UnknownFieldSet
     getUnknownFields() {
@@ -154,7 +172,6 @@ private static final long serialVersionUID = 0L;
       if (extensionRegistry == null) {
         throw new java.lang.NullPointerException();
       }
-      int mutable_bitField0_ = 0;
       com.google.protobuf.UnknownFieldSet.Builder unknownFields =
           com.google.protobuf.UnknownFieldSet.newBuilder();
       try {
@@ -207,38 +224,41 @@ private static final long serialVersionUID = 0L;
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_Transaction_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_fieldAccessorTable
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_Transaction_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.class, bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder.class);
+              bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.class, bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder.class);
     }
 
     public static final int TYPE_FIELD_NUMBER = 1;
     private int type_;
     /**
-     * <code>.bdchain.api.common.TransactionType type = 1;</code>
+     * <code>.bdledger.api.TransactionType type = 1;</code>
+     * @return The enum numeric value on the wire for type.
      */
     public int getTypeValue() {
       return type_;
     }
     /**
-     * <code>.bdchain.api.common.TransactionType type = 1;</code>
+     * <code>.bdledger.api.TransactionType type = 1;</code>
+     * @return The type.
      */
-    public bdchain.api.grpc.common.TransactionType getType() {
+    public bdledger.api.grpc.common.TransactionType getType() {
       @SuppressWarnings("deprecation")
-      bdchain.api.grpc.common.TransactionType result = bdchain.api.grpc.common.TransactionType.valueOf(type_);
+      bdledger.api.grpc.common.TransactionType result = bdledger.api.grpc.common.TransactionType.valueOf(type_);
-      return result == null ? bdchain.api.grpc.common.TransactionType.UNRECOGNIZED : result;
+      return result == null ? bdledger.api.grpc.common.TransactionType.UNRECOGNIZED : result;
     }
 
     public static final int FROM_FIELD_NUMBER = 2;
     private com.google.protobuf.ByteString from_;
     /**
      * <code>bytes from = 2;</code>
+     * @return The from.
      */
     public com.google.protobuf.ByteString getFrom() {
       return from_;
@@ -248,6 +268,7 @@ private static final long serialVersionUID = 0L;
     private com.google.protobuf.ByteString to_;
     /**
      * <code>bytes to = 3;</code>
+     * @return The to.
      */
     public com.google.protobuf.ByteString getTo() {
       return to_;
@@ -257,6 +278,7 @@ private static final long serialVersionUID = 0L;
     private com.google.protobuf.ByteString data_;
     /**
      * <code>bytes data = 4;</code>
+     * @return The data.
      */
     public com.google.protobuf.ByteString getData() {
       return data_;
@@ -276,7 +298,7 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      if (type_ != bdchain.api.grpc.common.TransactionType.RECORD.getNumber()) {
+      if (type_ != bdledger.api.grpc.common.TransactionType.RECORD.getNumber()) {
         output.writeEnum(1, type_);
       }
       if (!from_.isEmpty()) {
@@ -297,7 +319,7 @@ private static final long serialVersionUID = 0L;
       if (size != -1) return size;
 
       size = 0;
-      if (type_ != bdchain.api.grpc.common.TransactionType.RECORD.getNumber()) {
+      if (type_ != bdledger.api.grpc.common.TransactionType.RECORD.getNumber()) {
         size += com.google.protobuf.CodedOutputStream
           .computeEnumSize(1, type_);
       }
@@ -323,10 +345,10 @@ private static final long serialVersionUID = 0L;
       if (obj == this) {
        return true;
       }
-      if (!(obj instanceof bdchain.api.grpc.txledger.SendTransactionRequest.Transaction)) {
+      if (!(obj instanceof bdledger.api.grpc.ledger.SendTransactionRequest.Transaction)) {
         return super.equals(obj);
       }
-      bdchain.api.grpc.txledger.SendTransactionRequest.Transaction other = (bdchain.api.grpc.txledger.SendTransactionRequest.Transaction) obj;
+      bdledger.api.grpc.ledger.SendTransactionRequest.Transaction other = (bdledger.api.grpc.ledger.SendTransactionRequest.Transaction) obj;
 
       if (type_ != other.type_) return false;
       if (!getFrom()
@@ -359,69 +381,69 @@ private static final long serialVersionUID = 0L;
       return hash;
     }
 
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         java.nio.ByteBuffer data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         java.nio.ByteBuffer data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(byte[] data)
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(java.io.InputStream input)
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseDelimitedFrom(java.io.InputStream input)
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseDelimitedFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parseFrom(
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
@@ -434,7 +456,7 @@ private static final long serialVersionUID = 0L;
     public static Builder newBuilder() {
       return DEFAULT_INSTANCE.toBuilder();
     }
-    public static Builder newBuilder(bdchain.api.grpc.txledger.SendTransactionRequest.Transaction prototype) {
+    public static Builder newBuilder(bdledger.api.grpc.ledger.SendTransactionRequest.Transaction prototype) {
       return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
     }
     @java.lang.Override
@@ -450,26 +472,26 @@ private static final long serialVersionUID = 0L;
       return builder;
     }
     /**
-     * Protobuf type {@code bdchain.api.txledger.SendTransactionRequest.Transaction}
+     * Protobuf type {@code bdledger.api.SendTransactionRequest.Transaction}
      */
     public static final class Builder extends
         com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.SendTransactionRequest.Transaction)
+        // @@protoc_insertion_point(builder_implements:bdledger.api.SendTransactionRequest.Transaction)
-        bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder {
+        bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_descriptor;
+        return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_Transaction_descriptor;
       }
 
       @java.lang.Override
       protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_fieldAccessorTable
+        return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_Transaction_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.class, bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder.class);
+                bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.class, bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder.class);
       }
 
-      // Construct using bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.newBuilder()
+      // Construct using bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.newBuilder()
       private Builder() {
         maybeForceBuilderInitialization();
       }
@@ -501,17 +523,17 @@ private static final long serialVersionUID = 0L;
       @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_Transaction_descriptor;
+        return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_Transaction_descriptor;
       }
 
       @java.lang.Override
-      public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction getDefaultInstanceForType() {
+      public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction getDefaultInstanceForType() {
-        return bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.getDefaultInstance();
+        return bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.getDefaultInstance();
       }
 
       @java.lang.Override
-      public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction build() {
+      public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction build() {
-        bdchain.api.grpc.txledger.SendTransactionRequest.Transaction result = buildPartial();
+        bdledger.api.grpc.ledger.SendTransactionRequest.Transaction result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
@@ -519,8 +541,8 @@ private static final long serialVersionUID = 0L;
       }
 
       @java.lang.Override
-      public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction buildPartial() {
+      public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction buildPartial() {
-        bdchain.api.grpc.txledger.SendTransactionRequest.Transaction result = new bdchain.api.grpc.txledger.SendTransactionRequest.Transaction(this);
+        bdledger.api.grpc.ledger.SendTransactionRequest.Transaction result = new bdledger.api.grpc.ledger.SendTransactionRequest.Transaction(this);
         result.type_ = type_;
         result.from_ = from_;
         result.to_ = to_;
@@ -563,16 +585,16 @@ private static final long serialVersionUID = 0L;
       }
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof bdchain.api.grpc.txledger.SendTransactionRequest.Transaction) {
+        if (other instanceof bdledger.api.grpc.ledger.SendTransactionRequest.Transaction) {
-          return mergeFrom((bdchain.api.grpc.txledger.SendTransactionRequest.Transaction)other);
+          return mergeFrom((bdledger.api.grpc.ledger.SendTransactionRequest.Transaction)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(bdchain.api.grpc.txledger.SendTransactionRequest.Transaction other) {
+      public Builder mergeFrom(bdledger.api.grpc.ledger.SendTransactionRequest.Transaction other) {
-        if (other == bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.getDefaultInstance()) return this;
+        if (other == bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.getDefaultInstance()) return this;
         if (other.type_ != 0) {
           setTypeValue(other.getTypeValue());
         }
@@ -600,11 +622,11 @@ private static final long serialVersionUID = 0L;
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        bdchain.api.grpc.txledger.SendTransactionRequest.Transaction parsedMessage = null;
+        bdledger.api.grpc.ledger.SendTransactionRequest.Transaction parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (bdchain.api.grpc.txledger.SendTransactionRequest.Transaction) e.getUnfinishedMessage();
+          parsedMessage = (bdledger.api.grpc.ledger.SendTransactionRequest.Transaction) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
@@ -616,13 +638,16 @@ private static final long serialVersionUID = 0L;
 
       private int type_ = 0;
       /**
-       * <code>.bdchain.api.common.TransactionType type = 1;</code>
+       * <code>.bdledger.api.TransactionType type = 1;</code>
+       * @return The enum numeric value on the wire for type.
        */
       public int getTypeValue() {
         return type_;
       }
       /**
-       * <code>.bdchain.api.common.TransactionType type = 1;</code>
+       * <code>.bdledger.api.TransactionType type = 1;</code>
+       * @param value The enum numeric value on the wire for type to set.
+       * @return This builder for chaining.
        */
       public Builder setTypeValue(int value) {
         type_ = value;
@@ -630,17 +655,20 @@ private static final long serialVersionUID = 0L;
         return this;
       }
       /**
-       * <code>.bdchain.api.common.TransactionType type = 1;</code>
+       * <code>.bdledger.api.TransactionType type = 1;</code>
+       * @return The type.
        */
-      public bdchain.api.grpc.common.TransactionType getType() {
+      public bdledger.api.grpc.common.TransactionType getType() {
         @SuppressWarnings("deprecation")
-        bdchain.api.grpc.common.TransactionType result = bdchain.api.grpc.common.TransactionType.valueOf(type_);
+        bdledger.api.grpc.common.TransactionType result = bdledger.api.grpc.common.TransactionType.valueOf(type_);
-        return result == null ? bdchain.api.grpc.common.TransactionType.UNRECOGNIZED : result;
+        return result == null ? bdledger.api.grpc.common.TransactionType.UNRECOGNIZED : result;
       }
       /**
-       * <code>.bdchain.api.common.TransactionType type = 1;</code>
+       * <code>.bdledger.api.TransactionType type = 1;</code>
+       * @param value The type to set.
+       * @return This builder for chaining.
        */
-      public Builder setType(bdchain.api.grpc.common.TransactionType value) {
+      public Builder setType(bdledger.api.grpc.common.TransactionType value) {
         if (value == null) {
           throw new NullPointerException();
         }
@@ -650,7 +678,8 @@ private static final long serialVersionUID = 0L;
         return this;
       }
       /**
-       * <code>.bdchain.api.common.TransactionType type = 1;</code>
+       * <code>.bdledger.api.TransactionType type = 1;</code>
+       * @return This builder for chaining.
        */
       public Builder clearType() {
         
@@ -662,12 +691,15 @@ private static final long serialVersionUID = 0L;
       private com.google.protobuf.ByteString from_ = com.google.protobuf.ByteString.EMPTY;
       /**
        * <code>bytes from = 2;</code>
+       * @return The from.
        */
       public com.google.protobuf.ByteString getFrom() {
         return from_;
       }
       /**
        * <code>bytes from = 2;</code>
+       * @param value The from to set.
+       * @return This builder for chaining.
        */
       public Builder setFrom(com.google.protobuf.ByteString value) {
         if (value == null) {
@@ -680,6 +712,7 @@ private static final long serialVersionUID = 0L;
       }
       /**
        * <code>bytes from = 2;</code>
+       * @return This builder for chaining.
        */
       public Builder clearFrom() {
         
@@ -691,12 +724,15 @@ private static final long serialVersionUID = 0L;
       private com.google.protobuf.ByteString to_ = com.google.protobuf.ByteString.EMPTY;
       /**
        * <code>bytes to = 3;</code>
+       * @return The to.
        */
       public com.google.protobuf.ByteString getTo() {
         return to_;
       }
       /**
        * <code>bytes to = 3;</code>
+       * @param value The to to set.
+       * @return This builder for chaining.
        */
       public Builder setTo(com.google.protobuf.ByteString value) {
         if (value == null) {
@@ -709,6 +745,7 @@ private static final long serialVersionUID = 0L;
       }
       /**
        * <code>bytes to = 3;</code>
+       * @return This builder for chaining.
        */
       public Builder clearTo() {
         
@@ -720,12 +757,15 @@ private static final long serialVersionUID = 0L;
       private com.google.protobuf.ByteString data_ = com.google.protobuf.ByteString.EMPTY;
       /**
        * <code>bytes data = 4;</code>
+       * @return The data.
        */
       public com.google.protobuf.ByteString getData() {
         return data_;
       }
       /**
        * <code>bytes data = 4;</code>
+       * @param value The data to set.
+       * @return This builder for chaining.
        */
       public Builder setData(com.google.protobuf.ByteString value) {
         if (value == null) {
@@ -738,6 +778,7 @@ private static final long serialVersionUID = 0L;
       }
       /**
        * <code>bytes data = 4;</code>
+       * @return This builder for chaining.
        */
       public Builder clearData() {
         
@@ -758,16 +799,16 @@ private static final long serialVersionUID = 0L;
       }
 
 
-      // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.SendTransactionRequest.Transaction)
+      // @@protoc_insertion_point(builder_scope:bdledger.api.SendTransactionRequest.Transaction)
     }
 
-    // @@protoc_insertion_point(class_scope:bdchain.api.txledger.SendTransactionRequest.Transaction)
+    // @@protoc_insertion_point(class_scope:bdledger.api.SendTransactionRequest.Transaction)
-    private static final bdchain.api.grpc.txledger.SendTransactionRequest.Transaction DEFAULT_INSTANCE;
+    private static final bdledger.api.grpc.ledger.SendTransactionRequest.Transaction DEFAULT_INSTANCE;
     static {
-      DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.SendTransactionRequest.Transaction();
+      DEFAULT_INSTANCE = new bdledger.api.grpc.ledger.SendTransactionRequest.Transaction();
     }
 
-    public static bdchain.api.grpc.txledger.SendTransactionRequest.Transaction getDefaultInstance() {
+    public static bdledger.api.grpc.ledger.SendTransactionRequest.Transaction getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
@@ -792,7 +833,7 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction getDefaultInstanceForType() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
 
@@ -802,6 +843,7 @@ private static final long serialVersionUID = 0L;
   private volatile java.lang.Object ledger_;
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   public java.lang.String getLedger() {
     java.lang.Object ref = ledger_;
@@ -817,6 +859,7 @@ private static final long serialVersionUID = 0L;
   }
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   public com.google.protobuf.ByteString
       getLedgerBytes() {
@@ -833,23 +876,25 @@ private static final long serialVersionUID = 0L;
   }
 
   public static final int TRANSACTION_FIELD_NUMBER = 2;
-  private bdchain.api.grpc.txledger.SendTransactionRequest.Transaction transaction_;
+  private bdledger.api.grpc.ledger.SendTransactionRequest.Transaction transaction_;
   /**
-   * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+   * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+   * @return Whether the transaction field is set.
    */
   public boolean hasTransaction() {
     return transaction_ != null;
   }
   /**
-   * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+   * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+   * @return The transaction.
    */
-  public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction getTransaction() {
+  public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction getTransaction() {
-    return transaction_ == null ? bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.getDefaultInstance() : transaction_;
+    return transaction_ == null ? bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.getDefaultInstance() : transaction_;
   }
   /**
-   * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+   * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
    */
-  public bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder getTransactionOrBuilder() {
+  public bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder getTransactionOrBuilder() {
     return getTransaction();
   }
 
@@ -899,10 +944,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.SendTransactionRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.ledger.SendTransactionRequest)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.SendTransactionRequest other = (bdchain.api.grpc.txledger.SendTransactionRequest) obj;
+    bdledger.api.grpc.ledger.SendTransactionRequest other = (bdledger.api.grpc.ledger.SendTransactionRequest) obj;
 
     if (!getLedger()
         .equals(other.getLedger())) return false;
@@ -933,69 +978,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionRequest parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionRequest parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -1008,7 +1053,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.SendTransactionRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.ledger.SendTransactionRequest prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -1024,26 +1069,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.SendTransactionRequest}
+   * Protobuf type {@code bdledger.api.SendTransactionRequest}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.SendTransactionRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.SendTransactionRequest)
-      bdchain.api.grpc.txledger.SendTransactionRequestOrBuilder {
+      bdledger.api.grpc.ledger.SendTransactionRequestOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_fieldAccessorTable
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.SendTransactionRequest.class, bdchain.api.grpc.txledger.SendTransactionRequest.Builder.class);
+              bdledger.api.grpc.ledger.SendTransactionRequest.class, bdledger.api.grpc.ledger.SendTransactionRequest.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.SendTransactionRequest.newBuilder()
+    // Construct using bdledger.api.grpc.ledger.SendTransactionRequest.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -1075,17 +1120,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionRequest_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionRequest_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.SendTransactionRequest.getDefaultInstance();
+      return bdledger.api.grpc.ledger.SendTransactionRequest.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionRequest build() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest build() {
-      bdchain.api.grpc.txledger.SendTransactionRequest result = buildPartial();
+      bdledger.api.grpc.ledger.SendTransactionRequest result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -1093,8 +1138,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionRequest buildPartial() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest buildPartial() {
-      bdchain.api.grpc.txledger.SendTransactionRequest result = new bdchain.api.grpc.txledger.SendTransactionRequest(this);
+      bdledger.api.grpc.ledger.SendTransactionRequest result = new bdledger.api.grpc.ledger.SendTransactionRequest(this);
       result.ledger_ = ledger_;
       if (transactionBuilder_ == null) {
         result.transaction_ = transaction_;
@@ -1139,16 +1184,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.SendTransactionRequest) {
+      if (other instanceof bdledger.api.grpc.ledger.SendTransactionRequest) {
-        return mergeFrom((bdchain.api.grpc.txledger.SendTransactionRequest)other);
+        return mergeFrom((bdledger.api.grpc.ledger.SendTransactionRequest)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.SendTransactionRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.ledger.SendTransactionRequest other) {
-      if (other == bdchain.api.grpc.txledger.SendTransactionRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.ledger.SendTransactionRequest.getDefaultInstance()) return this;
       if (!other.getLedger().isEmpty()) {
         ledger_ = other.ledger_;
         onChanged();
@@ -1171,11 +1216,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.SendTransactionRequest parsedMessage = null;
+      bdledger.api.grpc.ledger.SendTransactionRequest parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.SendTransactionRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.ledger.SendTransactionRequest) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -1188,6 +1233,7 @@ private static final long serialVersionUID = 0L;
     private java.lang.Object ledger_ = "";
     /**
      * <code>string ledger = 1;</code>
+     * @return The ledger.
      */
     public java.lang.String getLedger() {
       java.lang.Object ref = ledger_;
@@ -1203,6 +1249,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return The bytes for ledger.
      */
     public com.google.protobuf.ByteString
         getLedgerBytes() {
@@ -1219,6 +1266,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedger(
         java.lang.String value) {
@@ -1232,6 +1281,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearLedger() {
       
@@ -1241,6 +1291,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The bytes for ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedgerBytes(
         com.google.protobuf.ByteString value) {
@@ -1254,29 +1306,31 @@ private static final long serialVersionUID = 0L;
       return this;
     }
 
-    private bdchain.api.grpc.txledger.SendTransactionRequest.Transaction transaction_;
+    private bdledger.api.grpc.ledger.SendTransactionRequest.Transaction transaction_;
     private com.google.protobuf.SingleFieldBuilderV3<
-        bdchain.api.grpc.txledger.SendTransactionRequest.Transaction, bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder, bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder> transactionBuilder_;
+        bdledger.api.grpc.ledger.SendTransactionRequest.Transaction, bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder, bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder> transactionBuilder_;
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+     * @return Whether the transaction field is set.
      */
     public boolean hasTransaction() {
       return transactionBuilder_ != null || transaction_ != null;
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+     * @return The transaction.
      */
-    public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction getTransaction() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction getTransaction() {
       if (transactionBuilder_ == null) {
-        return transaction_ == null ? bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.getDefaultInstance() : transaction_;
+        return transaction_ == null ? bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.getDefaultInstance() : transaction_;
       } else {
         return transactionBuilder_.getMessage();
       }
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
-    public Builder setTransaction(bdchain.api.grpc.txledger.SendTransactionRequest.Transaction value) {
+    public Builder setTransaction(bdledger.api.grpc.ledger.SendTransactionRequest.Transaction value) {
       if (transactionBuilder_ == null) {
         if (value == null) {
           throw new NullPointerException();
@@ -1290,10 +1344,10 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
     public Builder setTransaction(
-        bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder builderForValue) {
+        bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder builderForValue) {
       if (transactionBuilder_ == null) {
         transaction_ = builderForValue.build();
         onChanged();
@@ -1304,13 +1358,13 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
-    public Builder mergeTransaction(bdchain.api.grpc.txledger.SendTransactionRequest.Transaction value) {
+    public Builder mergeTransaction(bdledger.api.grpc.ledger.SendTransactionRequest.Transaction value) {
       if (transactionBuilder_ == null) {
         if (transaction_ != null) {
           transaction_ =
-            bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.newBuilder(transaction_).mergeFrom(value).buildPartial();
+            bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.newBuilder(transaction_).mergeFrom(value).buildPartial();
         } else {
           transaction_ = value;
         }
@@ -1322,7 +1376,7 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
     public Builder clearTransaction() {
       if (transactionBuilder_ == null) {
@@ -1336,33 +1390,33 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
-    public bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder getTransactionBuilder() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder getTransactionBuilder() {
       
       onChanged();
       return getTransactionFieldBuilder().getBuilder();
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
-    public bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder getTransactionOrBuilder() {
+    public bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder getTransactionOrBuilder() {
       if (transactionBuilder_ != null) {
         return transactionBuilder_.getMessageOrBuilder();
       } else {
         return transaction_ == null ?
-            bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.getDefaultInstance() : transaction_;
+            bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.getDefaultInstance() : transaction_;
       }
     }
     /**
-     * <code>.bdchain.api.txledger.SendTransactionRequest.Transaction transaction = 2;</code>
+     * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
      */
     private com.google.protobuf.SingleFieldBuilderV3<
-        bdchain.api.grpc.txledger.SendTransactionRequest.Transaction, bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder, bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder> 
+        bdledger.api.grpc.ledger.SendTransactionRequest.Transaction, bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder, bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder> 
         getTransactionFieldBuilder() {
       if (transactionBuilder_ == null) {
         transactionBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-            bdchain.api.grpc.txledger.SendTransactionRequest.Transaction, bdchain.api.grpc.txledger.SendTransactionRequest.Transaction.Builder, bdchain.api.grpc.txledger.SendTransactionRequest.TransactionOrBuilder>(
+            bdledger.api.grpc.ledger.SendTransactionRequest.Transaction, bdledger.api.grpc.ledger.SendTransactionRequest.Transaction.Builder, bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder>(
                 getTransaction(),
                 getParentForChildren(),
                 isClean());
@@ -1383,16 +1437,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.SendTransactionRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.SendTransactionRequest)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.SendTransactionRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.SendTransactionRequest)
-  private static final bdchain.api.grpc.txledger.SendTransactionRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.ledger.SendTransactionRequest DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.SendTransactionRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.ledger.SendTransactionRequest();
   }
 
-  public static bdchain.api.grpc.txledger.SendTransactionRequest getDefaultInstance() {
+  public static bdledger.api.grpc.ledger.SendTransactionRequest getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -1417,7 +1471,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.SendTransactionRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.ledger.SendTransactionRequest getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/ledger/SendTransactionRequestOrBuilder.java

@@ -0,0 +1,36 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/ledger.proto
+
+package bdledger.api.grpc.ledger;
+
+public interface SendTransactionRequestOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.SendTransactionRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>string ledger = 1;</code>
+   * @return The ledger.
+   */
+  java.lang.String getLedger();
+  /**
+   * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
+   */
+  com.google.protobuf.ByteString
+      getLedgerBytes();
+
+  /**
+   * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+   * @return Whether the transaction field is set.
+   */
+  boolean hasTransaction();
+  /**
+   * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+   * @return The transaction.
+   */
+  bdledger.api.grpc.ledger.SendTransactionRequest.Transaction getTransaction();
+  /**
+   * <code>.bdledger.api.SendTransactionRequest.Transaction transaction = 2;</code>
+   */
+  bdledger.api.grpc.ledger.SendTransactionRequest.TransactionOrBuilder getTransactionOrBuilder();
+}

src/main/java/bdledger/api/grpc/ledger/SendTransactionResponse.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.SendTransactionResponse}
+ * Protobuf type {@code bdledger.api.SendTransactionResponse}
  */
 public  final class SendTransactionResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.SendTransactionResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.SendTransactionResponse)
     SendTransactionResponseOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use SendTransactionResponse.newBuilder() to construct.
@@ -19,6 +19,13 @@ private static final long serialVersionUID = 0L;
     hash_ = com.google.protobuf.ByteString.EMPTY;
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new SendTransactionResponse();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -32,7 +39,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -69,21 +75,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionResponse_descriptor;
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionResponse_fieldAccessorTable
+    return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.SendTransactionResponse.class, bdchain.api.grpc.txledger.SendTransactionResponse.Builder.class);
+            bdledger.api.grpc.ledger.SendTransactionResponse.class, bdledger.api.grpc.ledger.SendTransactionResponse.Builder.class);
   }
 
   public static final int HASH_FIELD_NUMBER = 1;
   private com.google.protobuf.ByteString hash_;
   /**
    * <code>bytes hash = 1;</code>
+   * @return The hash.
    */
   public com.google.protobuf.ByteString getHash() {
     return hash_;
@@ -129,10 +136,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.SendTransactionResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.ledger.SendTransactionResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.SendTransactionResponse other = (bdchain.api.grpc.txledger.SendTransactionResponse) obj;
+    bdledger.api.grpc.ledger.SendTransactionResponse other = (bdledger.api.grpc.ledger.SendTransactionResponse) obj;
 
     if (!getHash()
         .equals(other.getHash())) return false;
@@ -154,69 +161,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.SendTransactionResponse parseFrom(
+  public static bdledger.api.grpc.ledger.SendTransactionResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -229,7 +236,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.SendTransactionResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.ledger.SendTransactionResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -245,26 +252,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.SendTransactionResponse}
+   * Protobuf type {@code bdledger.api.SendTransactionResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.SendTransactionResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.SendTransactionResponse)
-      bdchain.api.grpc.txledger.SendTransactionResponseOrBuilder {
+      bdledger.api.grpc.ledger.SendTransactionResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionResponse_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionResponse_fieldAccessorTable
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.SendTransactionResponse.class, bdchain.api.grpc.txledger.SendTransactionResponse.Builder.class);
+              bdledger.api.grpc.ledger.SendTransactionResponse.class, bdledger.api.grpc.ledger.SendTransactionResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.SendTransactionResponse.newBuilder()
+    // Construct using bdledger.api.grpc.ledger.SendTransactionResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -290,17 +297,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_SendTransactionResponse_descriptor;
+      return bdledger.api.grpc.ledger.LedgerProto.internal_static_bdledger_api_SendTransactionResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.ledger.SendTransactionResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.SendTransactionResponse.getDefaultInstance();
+      return bdledger.api.grpc.ledger.SendTransactionResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionResponse build() {
+    public bdledger.api.grpc.ledger.SendTransactionResponse build() {
-      bdchain.api.grpc.txledger.SendTransactionResponse result = buildPartial();
+      bdledger.api.grpc.ledger.SendTransactionResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -308,8 +315,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.SendTransactionResponse buildPartial() {
+    public bdledger.api.grpc.ledger.SendTransactionResponse buildPartial() {
-      bdchain.api.grpc.txledger.SendTransactionResponse result = new bdchain.api.grpc.txledger.SendTransactionResponse(this);
+      bdledger.api.grpc.ledger.SendTransactionResponse result = new bdledger.api.grpc.ledger.SendTransactionResponse(this);
       result.hash_ = hash_;
       onBuilt();
       return result;
@@ -349,16 +356,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.SendTransactionResponse) {
+      if (other instanceof bdledger.api.grpc.ledger.SendTransactionResponse) {
-        return mergeFrom((bdchain.api.grpc.txledger.SendTransactionResponse)other);
+        return mergeFrom((bdledger.api.grpc.ledger.SendTransactionResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.SendTransactionResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.ledger.SendTransactionResponse other) {
-      if (other == bdchain.api.grpc.txledger.SendTransactionResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.ledger.SendTransactionResponse.getDefaultInstance()) return this;
       if (other.getHash() != com.google.protobuf.ByteString.EMPTY) {
         setHash(other.getHash());
       }
@@ -377,11 +384,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.SendTransactionResponse parsedMessage = null;
+      bdledger.api.grpc.ledger.SendTransactionResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.SendTransactionResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.ledger.SendTransactionResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -394,12 +401,15 @@ private static final long serialVersionUID = 0L;
     private com.google.protobuf.ByteString hash_ = com.google.protobuf.ByteString.EMPTY;
     /**
      * <code>bytes hash = 1;</code>
+     * @return The hash.
      */
     public com.google.protobuf.ByteString getHash() {
       return hash_;
     }
     /**
      * <code>bytes hash = 1;</code>
+     * @param value The hash to set.
+     * @return This builder for chaining.
      */
     public Builder setHash(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -412,6 +422,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>bytes hash = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearHash() {
       
@@ -432,16 +443,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.SendTransactionResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.SendTransactionResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.SendTransactionResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.SendTransactionResponse)
-  private static final bdchain.api.grpc.txledger.SendTransactionResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.ledger.SendTransactionResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.SendTransactionResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.ledger.SendTransactionResponse();
   }
 
-  public static bdchain.api.grpc.txledger.SendTransactionResponse getDefaultInstance() {
+  public static bdledger.api.grpc.ledger.SendTransactionResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -466,7 +477,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.SendTransactionResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.ledger.SendTransactionResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/ledger/SendTransactionResponseOrBuilder.java

@@ -1,14 +1,15 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/ledger.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.ledger;
 
 public interface SendTransactionResponseOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.txledger.SendTransactionResponse)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.SendTransactionResponse)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>bytes hash = 1;</code>
+   * @return The hash.
    */
   com.google.protobuf.ByteString getHash();
 }

src/main/java/bdledger/api/grpc/ledger/TransactionLedgerGrpc.java

@@ -0,0 +1,436 @@
+package bdledger.api.grpc.ledger;
+
+import static io.grpc.MethodDescriptor.generateFullMethodName;
+import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncUnaryCall;
+import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
+import static io.grpc.stub.ClientCalls.blockingUnaryCall;
+import static io.grpc.stub.ClientCalls.futureUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
+
+/**
+ */
+@javax.annotation.Generated(
+    value = "by gRPC proto compiler (version 1.27.0)",
+    comments = "Source: bdledger/api/ledger.proto")
+public final class TransactionLedgerGrpc {
+
+  private TransactionLedgerGrpc() {}
+
+  public static final String SERVICE_NAME = "bdledger.api.TransactionLedger";
+
+  // Static method descriptors that strictly reflect the proto.
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.ledger.CreateLedgerRequest,
+      bdledger.api.grpc.ledger.CreateLedgerResponse> getCreateLedgerMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "CreateLedger",
+      requestType = bdledger.api.grpc.ledger.CreateLedgerRequest.class,
+      responseType = bdledger.api.grpc.ledger.CreateLedgerResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.ledger.CreateLedgerRequest,
+      bdledger.api.grpc.ledger.CreateLedgerResponse> getCreateLedgerMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.ledger.CreateLedgerRequest, bdledger.api.grpc.ledger.CreateLedgerResponse> getCreateLedgerMethod;
+    if ((getCreateLedgerMethod = TransactionLedgerGrpc.getCreateLedgerMethod) == null) {
+      synchronized (TransactionLedgerGrpc.class) {
+        if ((getCreateLedgerMethod = TransactionLedgerGrpc.getCreateLedgerMethod) == null) {
+          TransactionLedgerGrpc.getCreateLedgerMethod = getCreateLedgerMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.ledger.CreateLedgerRequest, bdledger.api.grpc.ledger.CreateLedgerResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "CreateLedger"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.ledger.CreateLedgerRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.ledger.CreateLedgerResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("CreateLedger"))
+              .build();
+        }
+      }
+    }
+    return getCreateLedgerMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<com.google.protobuf.Empty,
+      bdledger.api.grpc.ledger.GetLedgersResponse> getGetLedgersMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "GetLedgers",
+      requestType = com.google.protobuf.Empty.class,
+      responseType = bdledger.api.grpc.ledger.GetLedgersResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<com.google.protobuf.Empty,
+      bdledger.api.grpc.ledger.GetLedgersResponse> getGetLedgersMethod() {
+    io.grpc.MethodDescriptor<com.google.protobuf.Empty, bdledger.api.grpc.ledger.GetLedgersResponse> getGetLedgersMethod;
+    if ((getGetLedgersMethod = TransactionLedgerGrpc.getGetLedgersMethod) == null) {
+      synchronized (TransactionLedgerGrpc.class) {
+        if ((getGetLedgersMethod = TransactionLedgerGrpc.getGetLedgersMethod) == null) {
+          TransactionLedgerGrpc.getGetLedgersMethod = getGetLedgersMethod =
+              io.grpc.MethodDescriptor.<com.google.protobuf.Empty, bdledger.api.grpc.ledger.GetLedgersResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "GetLedgers"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  com.google.protobuf.Empty.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.ledger.GetLedgersResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("GetLedgers"))
+              .build();
+        }
+      }
+    }
+    return getGetLedgersMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.ledger.SendTransactionRequest,
+      bdledger.api.grpc.ledger.SendTransactionResponse> getSendTransactionMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "SendTransaction",
+      requestType = bdledger.api.grpc.ledger.SendTransactionRequest.class,
+      responseType = bdledger.api.grpc.ledger.SendTransactionResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.ledger.SendTransactionRequest,
+      bdledger.api.grpc.ledger.SendTransactionResponse> getSendTransactionMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.ledger.SendTransactionRequest, bdledger.api.grpc.ledger.SendTransactionResponse> getSendTransactionMethod;
+    if ((getSendTransactionMethod = TransactionLedgerGrpc.getSendTransactionMethod) == null) {
+      synchronized (TransactionLedgerGrpc.class) {
+        if ((getSendTransactionMethod = TransactionLedgerGrpc.getSendTransactionMethod) == null) {
+          TransactionLedgerGrpc.getSendTransactionMethod = getSendTransactionMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.ledger.SendTransactionRequest, bdledger.api.grpc.ledger.SendTransactionResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "SendTransaction"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.ledger.SendTransactionRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.ledger.SendTransactionResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new TransactionLedgerMethodDescriptorSupplier("SendTransaction"))
+              .build();
+        }
+      }
+    }
+    return getSendTransactionMethod;
+  }
+
+  /**
+   * Creates a new async stub that supports all call types for the service
+   */
+  public static TransactionLedgerStub newStub(io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<TransactionLedgerStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<TransactionLedgerStub>() {
+        @java.lang.Override
+        public TransactionLedgerStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new TransactionLedgerStub(channel, callOptions);
+        }
+      };
+    return TransactionLedgerStub.newStub(factory, channel);
+  }
+
+  /**
+   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
+   */
+  public static TransactionLedgerBlockingStub newBlockingStub(
+      io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<TransactionLedgerBlockingStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<TransactionLedgerBlockingStub>() {
+        @java.lang.Override
+        public TransactionLedgerBlockingStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new TransactionLedgerBlockingStub(channel, callOptions);
+        }
+      };
+    return TransactionLedgerBlockingStub.newStub(factory, channel);
+  }
+
+  /**
+   * Creates a new ListenableFuture-style stub that supports unary calls on the service
+   */
+  public static TransactionLedgerFutureStub newFutureStub(
+      io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<TransactionLedgerFutureStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<TransactionLedgerFutureStub>() {
+        @java.lang.Override
+        public TransactionLedgerFutureStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new TransactionLedgerFutureStub(channel, callOptions);
+        }
+      };
+    return TransactionLedgerFutureStub.newStub(factory, channel);
+  }
+
+  /**
+   */
+  public static abstract class TransactionLedgerImplBase implements io.grpc.BindableService {
+
+    /**
+     */
+    public void createLedger(bdledger.api.grpc.ledger.CreateLedgerRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.CreateLedgerResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getCreateLedgerMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void getLedgers(com.google.protobuf.Empty request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.GetLedgersResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getGetLedgersMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void sendTransaction(bdledger.api.grpc.ledger.SendTransactionRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.SendTransactionResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getSendTransactionMethod(), responseObserver);
+    }
+
+    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
+      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
+          .addMethod(
+            getCreateLedgerMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.ledger.CreateLedgerRequest,
+                bdledger.api.grpc.ledger.CreateLedgerResponse>(
+                  this, METHODID_CREATE_LEDGER)))
+          .addMethod(
+            getGetLedgersMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                com.google.protobuf.Empty,
+                bdledger.api.grpc.ledger.GetLedgersResponse>(
+                  this, METHODID_GET_LEDGERS)))
+          .addMethod(
+            getSendTransactionMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.ledger.SendTransactionRequest,
+                bdledger.api.grpc.ledger.SendTransactionResponse>(
+                  this, METHODID_SEND_TRANSACTION)))
+          .build();
+    }
+  }
+
+  /**
+   */
+  public static final class TransactionLedgerStub extends io.grpc.stub.AbstractAsyncStub<TransactionLedgerStub> {
+    private TransactionLedgerStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected TransactionLedgerStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new TransactionLedgerStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public void createLedger(bdledger.api.grpc.ledger.CreateLedgerRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.CreateLedgerResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getCreateLedgerMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void getLedgers(com.google.protobuf.Empty request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.GetLedgersResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getGetLedgersMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void sendTransaction(bdledger.api.grpc.ledger.SendTransactionRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.SendTransactionResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getSendTransactionMethod(), getCallOptions()), request, responseObserver);
+    }
+  }
+
+  /**
+   */
+  public static final class TransactionLedgerBlockingStub extends io.grpc.stub.AbstractBlockingStub<TransactionLedgerBlockingStub> {
+    private TransactionLedgerBlockingStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected TransactionLedgerBlockingStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new TransactionLedgerBlockingStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.ledger.CreateLedgerResponse createLedger(bdledger.api.grpc.ledger.CreateLedgerRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getCreateLedgerMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.ledger.GetLedgersResponse getLedgers(com.google.protobuf.Empty request) {
+      return blockingUnaryCall(
+          getChannel(), getGetLedgersMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.ledger.SendTransactionResponse sendTransaction(bdledger.api.grpc.ledger.SendTransactionRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getSendTransactionMethod(), getCallOptions(), request);
+    }
+  }
+
+  /**
+   */
+  public static final class TransactionLedgerFutureStub extends io.grpc.stub.AbstractFutureStub<TransactionLedgerFutureStub> {
+    private TransactionLedgerFutureStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected TransactionLedgerFutureStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new TransactionLedgerFutureStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.ledger.CreateLedgerResponse> createLedger(
+        bdledger.api.grpc.ledger.CreateLedgerRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getCreateLedgerMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.ledger.GetLedgersResponse> getLedgers(
+        com.google.protobuf.Empty request) {
+      return futureUnaryCall(
+          getChannel().newCall(getGetLedgersMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.ledger.SendTransactionResponse> sendTransaction(
+        bdledger.api.grpc.ledger.SendTransactionRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getSendTransactionMethod(), getCallOptions()), request);
+    }
+  }
+
+  private static final int METHODID_CREATE_LEDGER = 0;
+  private static final int METHODID_GET_LEDGERS = 1;
+  private static final int METHODID_SEND_TRANSACTION = 2;
+
+  private static final class MethodHandlers<Req, Resp> implements
+      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
+    private final TransactionLedgerImplBase serviceImpl;
+    private final int methodId;
+
+    MethodHandlers(TransactionLedgerImplBase serviceImpl, int methodId) {
+      this.serviceImpl = serviceImpl;
+      this.methodId = methodId;
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        case METHODID_CREATE_LEDGER:
+          serviceImpl.createLedger((bdledger.api.grpc.ledger.CreateLedgerRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.CreateLedgerResponse>) responseObserver);
+          break;
+        case METHODID_GET_LEDGERS:
+          serviceImpl.getLedgers((com.google.protobuf.Empty) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.GetLedgersResponse>) responseObserver);
+          break;
+        case METHODID_SEND_TRANSACTION:
+          serviceImpl.sendTransaction((bdledger.api.grpc.ledger.SendTransactionRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.ledger.SendTransactionResponse>) responseObserver);
+          break;
+        default:
+          throw new AssertionError();
+      }
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public io.grpc.stub.StreamObserver<Req> invoke(
+        io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        default:
+          throw new AssertionError();
+      }
+    }
+  }
+
+  private static abstract class TransactionLedgerBaseDescriptorSupplier
+      implements io.grpc.protobuf.ProtoFileDescriptorSupplier, io.grpc.protobuf.ProtoServiceDescriptorSupplier {
+    TransactionLedgerBaseDescriptorSupplier() {}
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
+      return bdledger.api.grpc.ledger.LedgerProto.getDescriptor();
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.ServiceDescriptor getServiceDescriptor() {
+      return getFileDescriptor().findServiceByName("TransactionLedger");
+    }
+  }
+
+  private static final class TransactionLedgerFileDescriptorSupplier
+      extends TransactionLedgerBaseDescriptorSupplier {
+    TransactionLedgerFileDescriptorSupplier() {}
+  }
+
+  private static final class TransactionLedgerMethodDescriptorSupplier
+      extends TransactionLedgerBaseDescriptorSupplier
+      implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
+    private final String methodName;
+
+    TransactionLedgerMethodDescriptorSupplier(String methodName) {
+      this.methodName = methodName;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.MethodDescriptor getMethodDescriptor() {
+      return getServiceDescriptor().findMethodByName(methodName);
+    }
+  }
+
+  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
+
+  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
+    io.grpc.ServiceDescriptor result = serviceDescriptor;
+    if (result == null) {
+      synchronized (TransactionLedgerGrpc.class) {
+        result = serviceDescriptor;
+        if (result == null) {
+          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
+              .setSchemaDescriptor(new TransactionLedgerFileDescriptorSupplier())
+              .addMethod(getCreateLedgerMethod())
+              .addMethod(getGetLedgersMethod())
+              .addMethod(getSendTransactionMethod())
+              .build();
+        }
+      }
+    }
+    return result;
+  }
+}

src/main/java/bdledger/api/grpc/node/ClientVersionResponse.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/common.proto
+// source: bdledger/api/node.proto
 
-package bdchain.api.grpc.common;
+package bdledger.api.grpc.node;
 
 /**
- * Protobuf type {@code bdchain.api.common.ClientVersionResponse}
+ * Protobuf type {@code bdledger.api.ClientVersionResponse}
  */
 public  final class ClientVersionResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.common.ClientVersionResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.ClientVersionResponse)
     ClientVersionResponseOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use ClientVersionResponse.newBuilder() to construct.
@@ -19,6 +19,13 @@ private static final long serialVersionUID = 0L;
     version_ = "";
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new ClientVersionResponse();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -32,7 +39,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -70,15 +76,15 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.common.CommonProto.internal_static_bdchain_api_common_ClientVersionResponse_descriptor;
+    return bdledger.api.grpc.node.NodeProto.internal_static_bdledger_api_ClientVersionResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.common.CommonProto.internal_static_bdchain_api_common_ClientVersionResponse_fieldAccessorTable
+    return bdledger.api.grpc.node.NodeProto.internal_static_bdledger_api_ClientVersionResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.common.ClientVersionResponse.class, bdchain.api.grpc.common.ClientVersionResponse.Builder.class);
+            bdledger.api.grpc.node.ClientVersionResponse.class, bdledger.api.grpc.node.ClientVersionResponse.Builder.class);
   }
 
   public static final int VERSION_FIELD_NUMBER = 1;
@@ -89,6 +95,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>string version = 1;</code>
+   * @return The version.
    */
   public java.lang.String getVersion() {
     java.lang.Object ref = version_;
@@ -108,6 +115,7 @@ private static final long serialVersionUID = 0L;
    * </pre>
    *
    * <code>string version = 1;</code>
+   * @return The bytes for version.
    */
   public com.google.protobuf.ByteString
       getVersionBytes() {
@@ -162,10 +170,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.common.ClientVersionResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.node.ClientVersionResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.common.ClientVersionResponse other = (bdchain.api.grpc.common.ClientVersionResponse) obj;
+    bdledger.api.grpc.node.ClientVersionResponse other = (bdledger.api.grpc.node.ClientVersionResponse) obj;
 
     if (!getVersion()
         .equals(other.getVersion())) return false;
@@ -187,69 +195,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.node.ClientVersionResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.common.ClientVersionResponse parseFrom(
+  public static bdledger.api.grpc.node.ClientVersionResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -262,7 +270,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.common.ClientVersionResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.node.ClientVersionResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -278,26 +286,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.common.ClientVersionResponse}
+   * Protobuf type {@code bdledger.api.ClientVersionResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.common.ClientVersionResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.ClientVersionResponse)
-      bdchain.api.grpc.common.ClientVersionResponseOrBuilder {
+      bdledger.api.grpc.node.ClientVersionResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.common.CommonProto.internal_static_bdchain_api_common_ClientVersionResponse_descriptor;
+      return bdledger.api.grpc.node.NodeProto.internal_static_bdledger_api_ClientVersionResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.common.CommonProto.internal_static_bdchain_api_common_ClientVersionResponse_fieldAccessorTable
+      return bdledger.api.grpc.node.NodeProto.internal_static_bdledger_api_ClientVersionResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.common.ClientVersionResponse.class, bdchain.api.grpc.common.ClientVersionResponse.Builder.class);
+              bdledger.api.grpc.node.ClientVersionResponse.class, bdledger.api.grpc.node.ClientVersionResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.common.ClientVersionResponse.newBuilder()
+    // Construct using bdledger.api.grpc.node.ClientVersionResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -323,17 +331,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.common.CommonProto.internal_static_bdchain_api_common_ClientVersionResponse_descriptor;
+      return bdledger.api.grpc.node.NodeProto.internal_static_bdledger_api_ClientVersionResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.common.ClientVersionResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.node.ClientVersionResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.common.ClientVersionResponse.getDefaultInstance();
+      return bdledger.api.grpc.node.ClientVersionResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.common.ClientVersionResponse build() {
+    public bdledger.api.grpc.node.ClientVersionResponse build() {
-      bdchain.api.grpc.common.ClientVersionResponse result = buildPartial();
+      bdledger.api.grpc.node.ClientVersionResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -341,8 +349,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.common.ClientVersionResponse buildPartial() {
+    public bdledger.api.grpc.node.ClientVersionResponse buildPartial() {
-      bdchain.api.grpc.common.ClientVersionResponse result = new bdchain.api.grpc.common.ClientVersionResponse(this);
+      bdledger.api.grpc.node.ClientVersionResponse result = new bdledger.api.grpc.node.ClientVersionResponse(this);
       result.version_ = version_;
       onBuilt();
       return result;
@@ -382,16 +390,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.common.ClientVersionResponse) {
+      if (other instanceof bdledger.api.grpc.node.ClientVersionResponse) {
-        return mergeFrom((bdchain.api.grpc.common.ClientVersionResponse)other);
+        return mergeFrom((bdledger.api.grpc.node.ClientVersionResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.common.ClientVersionResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.node.ClientVersionResponse other) {
-      if (other == bdchain.api.grpc.common.ClientVersionResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.node.ClientVersionResponse.getDefaultInstance()) return this;
       if (!other.getVersion().isEmpty()) {
         version_ = other.version_;
         onChanged();
@@ -411,11 +419,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.common.ClientVersionResponse parsedMessage = null;
+      bdledger.api.grpc.node.ClientVersionResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.common.ClientVersionResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.node.ClientVersionResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -432,6 +440,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>string version = 1;</code>
+     * @return The version.
      */
     public java.lang.String getVersion() {
       java.lang.Object ref = version_;
@@ -451,6 +460,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>string version = 1;</code>
+     * @return The bytes for version.
      */
     public com.google.protobuf.ByteString
         getVersionBytes() {
@@ -471,6 +481,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>string version = 1;</code>
+     * @param value The version to set.
+     * @return This builder for chaining.
      */
     public Builder setVersion(
         java.lang.String value) {
@@ -488,6 +500,7 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>string version = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearVersion() {
       
@@ -501,6 +514,8 @@ private static final long serialVersionUID = 0L;
      * </pre>
      *
      * <code>string version = 1;</code>
+     * @param value The bytes for version to set.
+     * @return This builder for chaining.
      */
     public Builder setVersionBytes(
         com.google.protobuf.ByteString value) {
@@ -526,16 +541,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.common.ClientVersionResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.ClientVersionResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.common.ClientVersionResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.ClientVersionResponse)
-  private static final bdchain.api.grpc.common.ClientVersionResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.node.ClientVersionResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.common.ClientVersionResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.node.ClientVersionResponse();
   }
 
-  public static bdchain.api.grpc.common.ClientVersionResponse getDefaultInstance() {
+  public static bdledger.api.grpc.node.ClientVersionResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -560,7 +575,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.common.ClientVersionResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.node.ClientVersionResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/node/ClientVersionResponseOrBuilder.java

@@ -1,10 +1,10 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/common.proto
+// source: bdledger/api/node.proto
 
-package bdchain.api.grpc.common;
+package bdledger.api.grpc.node;
 
 public interface ClientVersionResponseOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.common.ClientVersionResponse)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.ClientVersionResponse)
     com.google.protobuf.MessageOrBuilder {
 
   /**
@@ -13,6 +13,7 @@ public interface ClientVersionResponseOrBuilder extends
    * </pre>
    *
    * <code>string version = 1;</code>
+   * @return The version.
    */
   java.lang.String getVersion();
   /**
@@ -21,6 +22,7 @@ public interface ClientVersionResponseOrBuilder extends
    * </pre>
    *
    * <code>string version = 1;</code>
+   * @return The bytes for version.
    */
   com.google.protobuf.ByteString
       getVersionBytes();

src/main/java/bdledger/api/grpc/node/NodeGrpc.java

@@ -0,0 +1,288 @@
+package bdledger.api.grpc.node;
+
+import static io.grpc.MethodDescriptor.generateFullMethodName;
+import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncUnaryCall;
+import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
+import static io.grpc.stub.ClientCalls.blockingUnaryCall;
+import static io.grpc.stub.ClientCalls.futureUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
+
+/**
+ */
+@javax.annotation.Generated(
+    value = "by gRPC proto compiler (version 1.27.0)",
+    comments = "Source: bdledger/api/node.proto")
+public final class NodeGrpc {
+
+  private NodeGrpc() {}
+
+  public static final String SERVICE_NAME = "bdledger.api.Node";
+
+  // Static method descriptors that strictly reflect the proto.
+  private static volatile io.grpc.MethodDescriptor<com.google.protobuf.Empty,
+      bdledger.api.grpc.node.ClientVersionResponse> getClientVersionMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "ClientVersion",
+      requestType = com.google.protobuf.Empty.class,
+      responseType = bdledger.api.grpc.node.ClientVersionResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<com.google.protobuf.Empty,
+      bdledger.api.grpc.node.ClientVersionResponse> getClientVersionMethod() {
+    io.grpc.MethodDescriptor<com.google.protobuf.Empty, bdledger.api.grpc.node.ClientVersionResponse> getClientVersionMethod;
+    if ((getClientVersionMethod = NodeGrpc.getClientVersionMethod) == null) {
+      synchronized (NodeGrpc.class) {
+        if ((getClientVersionMethod = NodeGrpc.getClientVersionMethod) == null) {
+          NodeGrpc.getClientVersionMethod = getClientVersionMethod =
+              io.grpc.MethodDescriptor.<com.google.protobuf.Empty, bdledger.api.grpc.node.ClientVersionResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "ClientVersion"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  com.google.protobuf.Empty.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.node.ClientVersionResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new NodeMethodDescriptorSupplier("ClientVersion"))
+              .build();
+        }
+      }
+    }
+    return getClientVersionMethod;
+  }
+
+  /**
+   * Creates a new async stub that supports all call types for the service
+   */
+  public static NodeStub newStub(io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<NodeStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<NodeStub>() {
+        @java.lang.Override
+        public NodeStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new NodeStub(channel, callOptions);
+        }
+      };
+    return NodeStub.newStub(factory, channel);
+  }
+
+  /**
+   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
+   */
+  public static NodeBlockingStub newBlockingStub(
+      io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<NodeBlockingStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<NodeBlockingStub>() {
+        @java.lang.Override
+        public NodeBlockingStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new NodeBlockingStub(channel, callOptions);
+        }
+      };
+    return NodeBlockingStub.newStub(factory, channel);
+  }
+
+  /**
+   * Creates a new ListenableFuture-style stub that supports unary calls on the service
+   */
+  public static NodeFutureStub newFutureStub(
+      io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<NodeFutureStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<NodeFutureStub>() {
+        @java.lang.Override
+        public NodeFutureStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new NodeFutureStub(channel, callOptions);
+        }
+      };
+    return NodeFutureStub.newStub(factory, channel);
+  }
+
+  /**
+   */
+  public static abstract class NodeImplBase implements io.grpc.BindableService {
+
+    /**
+     */
+    public void clientVersion(com.google.protobuf.Empty request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.node.ClientVersionResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getClientVersionMethod(), responseObserver);
+    }
+
+    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
+      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
+          .addMethod(
+            getClientVersionMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                com.google.protobuf.Empty,
+                bdledger.api.grpc.node.ClientVersionResponse>(
+                  this, METHODID_CLIENT_VERSION)))
+          .build();
+    }
+  }
+
+  /**
+   */
+  public static final class NodeStub extends io.grpc.stub.AbstractAsyncStub<NodeStub> {
+    private NodeStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected NodeStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new NodeStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public void clientVersion(com.google.protobuf.Empty request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.node.ClientVersionResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getClientVersionMethod(), getCallOptions()), request, responseObserver);
+    }
+  }
+
+  /**
+   */
+  public static final class NodeBlockingStub extends io.grpc.stub.AbstractBlockingStub<NodeBlockingStub> {
+    private NodeBlockingStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected NodeBlockingStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new NodeBlockingStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.node.ClientVersionResponse clientVersion(com.google.protobuf.Empty request) {
+      return blockingUnaryCall(
+          getChannel(), getClientVersionMethod(), getCallOptions(), request);
+    }
+  }
+
+  /**
+   */
+  public static final class NodeFutureStub extends io.grpc.stub.AbstractFutureStub<NodeFutureStub> {
+    private NodeFutureStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected NodeFutureStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new NodeFutureStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.node.ClientVersionResponse> clientVersion(
+        com.google.protobuf.Empty request) {
+      return futureUnaryCall(
+          getChannel().newCall(getClientVersionMethod(), getCallOptions()), request);
+    }
+  }
+
+  private static final int METHODID_CLIENT_VERSION = 0;
+
+  private static final class MethodHandlers<Req, Resp> implements
+      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
+    private final NodeImplBase serviceImpl;
+    private final int methodId;
+
+    MethodHandlers(NodeImplBase serviceImpl, int methodId) {
+      this.serviceImpl = serviceImpl;
+      this.methodId = methodId;
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        case METHODID_CLIENT_VERSION:
+          serviceImpl.clientVersion((com.google.protobuf.Empty) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.node.ClientVersionResponse>) responseObserver);
+          break;
+        default:
+          throw new AssertionError();
+      }
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public io.grpc.stub.StreamObserver<Req> invoke(
+        io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        default:
+          throw new AssertionError();
+      }
+    }
+  }
+
+  private static abstract class NodeBaseDescriptorSupplier
+      implements io.grpc.protobuf.ProtoFileDescriptorSupplier, io.grpc.protobuf.ProtoServiceDescriptorSupplier {
+    NodeBaseDescriptorSupplier() {}
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
+      return bdledger.api.grpc.node.NodeProto.getDescriptor();
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.ServiceDescriptor getServiceDescriptor() {
+      return getFileDescriptor().findServiceByName("Node");
+    }
+  }
+
+  private static final class NodeFileDescriptorSupplier
+      extends NodeBaseDescriptorSupplier {
+    NodeFileDescriptorSupplier() {}
+  }
+
+  private static final class NodeMethodDescriptorSupplier
+      extends NodeBaseDescriptorSupplier
+      implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
+    private final String methodName;
+
+    NodeMethodDescriptorSupplier(String methodName) {
+      this.methodName = methodName;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.MethodDescriptor getMethodDescriptor() {
+      return getServiceDescriptor().findMethodByName(methodName);
+    }
+  }
+
+  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
+
+  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
+    io.grpc.ServiceDescriptor result = serviceDescriptor;
+    if (result == null) {
+      synchronized (NodeGrpc.class) {
+        result = serviceDescriptor;
+        if (result == null) {
+          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
+              .setSchemaDescriptor(new NodeFileDescriptorSupplier())
+              .addMethod(getClientVersionMethod())
+              .build();
+        }
+      }
+    }
+    return result;
+  }
+}

src/main/java/bdledger/api/grpc/node/NodeProto.java

@@ -0,0 +1,55 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/node.proto
+
+package bdledger.api.grpc.node;
+
+public final class NodeProto {
+  private NodeProto() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_ClientVersionResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_ClientVersionResponse_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\027bdledger/api/node.proto\022\014bdledger.api\032" +
+      "\033google/protobuf/empty.proto\"(\n\025ClientVe" +
+      "rsionResponse\022\017\n\007version\030\001 \001(\t2T\n\004Node\022L" +
+      "\n\rClientVersion\022\026.google.protobuf.Empty\032" +
+      "#.bdledger.api.ClientVersionResponseBM\n\026" +
+      "bdledger.api.grpc.nodeB\tNodeProtoP\001Z&bdw" +
+      "are.org/bdledger/pkg/api/grpc/protob\006pro" +
+      "to3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+          com.google.protobuf.EmptyProto.getDescriptor(),
+        });
+    internal_static_bdledger_api_ClientVersionResponse_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_bdledger_api_ClientVersionResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_ClientVersionResponse_descriptor,
+        new java.lang.String[] { "Version", });
+    com.google.protobuf.EmptyProto.getDescriptor();
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/bdledger/api/grpc/query/BlockFilter.java

@@ -0,0 +1,548 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+/**
+ * Protobuf type {@code bdledger.api.BlockFilter}
+ */
+public  final class BlockFilter extends
+    com.google.protobuf.GeneratedMessageV3 implements
+    // @@protoc_insertion_point(message_implements:bdledger.api.BlockFilter)
+    BlockFilterOrBuilder {
+private static final long serialVersionUID = 0L;
+  // Use BlockFilter.newBuilder() to construct.
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+    hash_ = com.google.protobuf.ByteString.EMPTY;
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new BlockFilter();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet
+  getUnknownFields() {
+    return this.unknownFields;
+  }
+  private BlockFilter(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
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+
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+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(
+          e).setUnfinishedMessage(this);
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+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+  public static final com.google.protobuf.Descriptors.Descriptor
+      getDescriptor() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_BlockFilter_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_BlockFilter_fieldAccessorTable
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+   * @return The timestamp.
+   */
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+
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+  @java.lang.Override
+  public final boolean isInitialized() {
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+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
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+  public void writeTo(com.google.protobuf.CodedOutputStream output)
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+      output.writeBytes(1, hash_);
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+    if (timestamp_ != 0L) {
+      output.writeInt64(2, timestamp_);
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+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!hash_.isEmpty()) {
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+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+     return true;
+    }
+    if (!(obj instanceof bdledger.api.grpc.query.BlockFilter)) {
+      return super.equals(obj);
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+
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+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + HASH_FIELD_NUMBER;
+    hash = (53 * hash) + getHash().hashCode();
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+    hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
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+      java.nio.ByteBuffer data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      java.nio.ByteBuffer data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
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+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
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+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      byte[] data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
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+      throws java.io.IOException {
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+        .parseWithIOException(PARSER, input);
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+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
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+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input);
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+  public static bdledger.api.grpc.query.BlockFilter parseDelimitedFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      com.google.protobuf.CodedInputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.BlockFilter parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() { return newBuilder(); }
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+  public static Builder newBuilder(bdledger.api.grpc.query.BlockFilter prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE
+        ? new Builder() : new Builder().mergeFrom(this);
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+
+  @java.lang.Override
+  protected Builder newBuilderForType(
+      com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
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+  /**
+   * Protobuf type {@code bdledger.api.BlockFilter}
+   */
+  public static final class Builder extends
+      com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+      // @@protoc_insertion_point(builder_implements:bdledger.api.BlockFilter)
+      bdledger.api.grpc.query.BlockFilterOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
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+    }
+
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+    private Builder() {
+      maybeForceBuilderInitialization();
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+    private Builder(
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+  }
+
+  public static bdledger.api.grpc.query.BlockFilter getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<BlockFilter>
+      PARSER = new com.google.protobuf.AbstractParser<BlockFilter>() {
+    @java.lang.Override
+    public BlockFilter parsePartialFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return new BlockFilter(input, extensionRegistry);
+    }
+  };
+
+  public static com.google.protobuf.Parser<BlockFilter> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<BlockFilter> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public bdledger.api.grpc.query.BlockFilter getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+
+}
+

src/main/java/bdledger/api/grpc/query/BlockFilterOrBuilder.java

@@ -0,0 +1,21 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface BlockFilterOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.BlockFilter)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>bytes hash = 1;</code>
+   * @return The hash.
+   */
+  com.google.protobuf.ByteString getHash();
+
+  /**
+   * <code>int64 timestamp = 2;</code>
+   * @return The timestamp.
+   */
+  long getTimestamp();
+}

src/main/java/bdledger/api/grpc/query/BlocksRequestOrBuilder.java

@@ -0,0 +1,61 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface BlocksRequestOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.BlocksRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>string ledger = 1;</code>
+   * @return The ledger.
+   */
+  java.lang.String getLedger();
+  /**
+   * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
+   */
+  com.google.protobuf.ByteString
+      getLedgerBytes();
+
+  /**
+   * <code>repeated .bdledger.api.BlockFilter filters = 2;</code>
+   */
+  java.util.List<bdledger.api.grpc.query.BlockFilter> 
+      getFiltersList();
+  /**
+   * <code>repeated .bdledger.api.BlockFilter filters = 2;</code>
+   */
+  bdledger.api.grpc.query.BlockFilter getFilters(int index);
+  /**
+   * <code>repeated .bdledger.api.BlockFilter filters = 2;</code>
+   */
+  int getFiltersCount();
+  /**
+   * <code>repeated .bdledger.api.BlockFilter filters = 2;</code>
+   */
+  java.util.List<? extends bdledger.api.grpc.query.BlockFilterOrBuilder> 
+      getFiltersOrBuilderList();
+  /**
+   * <code>repeated .bdledger.api.BlockFilter filters = 2;</code>
+   */
+  bdledger.api.grpc.query.BlockFilterOrBuilder getFiltersOrBuilder(
+      int index);
+
+  /**
+   * <pre>
+   * required
+   * </pre>
+   *
+   * <code>int64 start_timestamp = 3;</code>
+   * @return The startTimestamp.
+   */
+  long getStartTimestamp();
+
+  /**
+   * <code>int64 end_timestamp = 4;</code>
+   * @return The endTimestamp.
+   */
+  long getEndTimestamp();
+}

src/main/java/bdledger/api/grpc/query/CountBlocksResponse.java

@@ -1,21 +1,28 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.acchain.BlockNumberResponse}
+ * Protobuf type {@code bdledger.api.CountBlocksResponse}
  */
-public  final class BlockNumberResponse extends
+public  final class CountBlocksResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.acchain.BlockNumberResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.CountBlocksResponse)
-    BlockNumberResponseOrBuilder {
+    CountBlocksResponseOrBuilder {
 private static final long serialVersionUID = 0L;
-  // Use BlockNumberResponse.newBuilder() to construct.
+  // Use CountBlocksResponse.newBuilder() to construct.
-  private BlockNumberResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+  private CountBlocksResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
     super(builder);
   }
-  private BlockNumberResponse() {
+  private CountBlocksResponse() {
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new CountBlocksResponse();
   }
 
   @java.lang.Override
@@ -23,7 +30,7 @@ private static final long serialVersionUID = 0L;
   getUnknownFields() {
     return this.unknownFields;
   }
-  private BlockNumberResponse(
+  private CountBlocksResponse(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
@@ -31,7 +38,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -44,7 +50,7 @@ private static final long serialVersionUID = 0L;
             break;
           case 8: {
 
-            blockNumber_ = input.readUInt64();
+            count_ = input.readUInt64();
             break;
           }
           default: {
@@ -68,24 +74,25 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_BlockNumberResponse_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountBlocksResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_BlockNumberResponse_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountBlocksResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.acchain.BlockNumberResponse.class, bdchain.api.grpc.acchain.BlockNumberResponse.Builder.class);
+            bdledger.api.grpc.query.CountBlocksResponse.class, bdledger.api.grpc.query.CountBlocksResponse.Builder.class);
   }
 
-  public static final int BLOCK_NUMBER_FIELD_NUMBER = 1;
+  public static final int COUNT_FIELD_NUMBER = 1;
-  private long blockNumber_;
+  private long count_;
   /**
-   * <code>uint64 block_number = 1;</code>
+   * <code>uint64 count = 1;</code>
+   * @return The count.
    */
-  public long getBlockNumber() {
+  public long getCount() {
-    return blockNumber_;
+    return count_;
   }
 
   private byte memoizedIsInitialized = -1;
@@ -102,8 +109,8 @@ private static final long serialVersionUID = 0L;
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output)
                       throws java.io.IOException {
-    if (blockNumber_ != 0L) {
+    if (count_ != 0L) {
-      output.writeUInt64(1, blockNumber_);
+      output.writeUInt64(1, count_);
     }
     unknownFields.writeTo(output);
   }
@@ -114,9 +121,9 @@ private static final long serialVersionUID = 0L;
     if (size != -1) return size;
 
     size = 0;
-    if (blockNumber_ != 0L) {
+    if (count_ != 0L) {
       size += com.google.protobuf.CodedOutputStream
-        .computeUInt64Size(1, blockNumber_);
+        .computeUInt64Size(1, count_);
     }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
@@ -128,13 +135,13 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.acchain.BlockNumberResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.query.CountBlocksResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.acchain.BlockNumberResponse other = (bdchain.api.grpc.acchain.BlockNumberResponse) obj;
+    bdledger.api.grpc.query.CountBlocksResponse other = (bdledger.api.grpc.query.CountBlocksResponse) obj;
 
-    if (getBlockNumber()
+    if (getCount()
-        != other.getBlockNumber()) return false;
+        != other.getCount()) return false;
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -146,77 +153,77 @@ private static final long serialVersionUID = 0L;
     }
     int hash = 41;
     hash = (19 * hash) + getDescriptor().hashCode();
-    hash = (37 * hash) + BLOCK_NUMBER_FIELD_NUMBER;
+    hash = (37 * hash) + COUNT_FIELD_NUMBER;
     hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
-        getBlockNumber());
+        getCount());
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
   }
 
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.CountBlocksResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.BlockNumberResponse parseFrom(
+  public static bdledger.api.grpc.query.CountBlocksResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -229,7 +236,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.acchain.BlockNumberResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.CountBlocksResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -245,26 +252,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.acchain.BlockNumberResponse}
+   * Protobuf type {@code bdledger.api.CountBlocksResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.acchain.BlockNumberResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.CountBlocksResponse)
-      bdchain.api.grpc.acchain.BlockNumberResponseOrBuilder {
+      bdledger.api.grpc.query.CountBlocksResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_BlockNumberResponse_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountBlocksResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_BlockNumberResponse_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountBlocksResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.acchain.BlockNumberResponse.class, bdchain.api.grpc.acchain.BlockNumberResponse.Builder.class);
+              bdledger.api.grpc.query.CountBlocksResponse.class, bdledger.api.grpc.query.CountBlocksResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.acchain.BlockNumberResponse.newBuilder()
+    // Construct using bdledger.api.grpc.query.CountBlocksResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -282,7 +289,7 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public Builder clear() {
       super.clear();
-      blockNumber_ = 0L;
+      count_ = 0L;
 
       return this;
     }
@@ -290,17 +297,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_BlockNumberResponse_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountBlocksResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.BlockNumberResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.CountBlocksResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.acchain.BlockNumberResponse.getDefaultInstance();
+      return bdledger.api.grpc.query.CountBlocksResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.BlockNumberResponse build() {
+    public bdledger.api.grpc.query.CountBlocksResponse build() {
-      bdchain.api.grpc.acchain.BlockNumberResponse result = buildPartial();
+      bdledger.api.grpc.query.CountBlocksResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -308,9 +315,9 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.BlockNumberResponse buildPartial() {
+    public bdledger.api.grpc.query.CountBlocksResponse buildPartial() {
-      bdchain.api.grpc.acchain.BlockNumberResponse result = new bdchain.api.grpc.acchain.BlockNumberResponse(this);
+      bdledger.api.grpc.query.CountBlocksResponse result = new bdledger.api.grpc.query.CountBlocksResponse(this);
-      result.blockNumber_ = blockNumber_;
+      result.count_ = count_;
       onBuilt();
       return result;
     }
@@ -349,18 +356,18 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.acchain.BlockNumberResponse) {
+      if (other instanceof bdledger.api.grpc.query.CountBlocksResponse) {
-        return mergeFrom((bdchain.api.grpc.acchain.BlockNumberResponse)other);
+        return mergeFrom((bdledger.api.grpc.query.CountBlocksResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.acchain.BlockNumberResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.CountBlocksResponse other) {
-      if (other == bdchain.api.grpc.acchain.BlockNumberResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.CountBlocksResponse.getDefaultInstance()) return this;
-      if (other.getBlockNumber() != 0L) {
+      if (other.getCount() != 0L) {
-        setBlockNumber(other.getBlockNumber());
+        setCount(other.getCount());
       }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
@@ -377,11 +384,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.acchain.BlockNumberResponse parsedMessage = null;
+      bdledger.api.grpc.query.CountBlocksResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.acchain.BlockNumberResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.CountBlocksResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -391,28 +398,32 @@ private static final long serialVersionUID = 0L;
       return this;
     }
 
-    private long blockNumber_ ;
+    private long count_ ;
     /**
-     * <code>uint64 block_number = 1;</code>
+     * <code>uint64 count = 1;</code>
+     * @return The count.
      */
-    public long getBlockNumber() {
+    public long getCount() {
-      return blockNumber_;
+      return count_;
     }
     /**
-     * <code>uint64 block_number = 1;</code>
+     * <code>uint64 count = 1;</code>
+     * @param value The count to set.
+     * @return This builder for chaining.
      */
-    public Builder setBlockNumber(long value) {
+    public Builder setCount(long value) {
       
-      blockNumber_ = value;
+      count_ = value;
       onChanged();
       return this;
     }
     /**
-     * <code>uint64 block_number = 1;</code>
+     * <code>uint64 count = 1;</code>
+     * @return This builder for chaining.
      */
-    public Builder clearBlockNumber() {
+    public Builder clearCount() {
       
-      blockNumber_ = 0L;
+      count_ = 0L;
       onChanged();
       return this;
     }
@@ -429,41 +440,41 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.acchain.BlockNumberResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.CountBlocksResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.BlockNumberResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.CountBlocksResponse)
-  private static final bdchain.api.grpc.acchain.BlockNumberResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.CountBlocksResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.BlockNumberResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.CountBlocksResponse();
   }
 
-  public static bdchain.api.grpc.acchain.BlockNumberResponse getDefaultInstance() {
+  public static bdledger.api.grpc.query.CountBlocksResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
-  private static final com.google.protobuf.Parser<BlockNumberResponse>
+  private static final com.google.protobuf.Parser<CountBlocksResponse>
-      PARSER = new com.google.protobuf.AbstractParser<BlockNumberResponse>() {
+      PARSER = new com.google.protobuf.AbstractParser<CountBlocksResponse>() {
     @java.lang.Override
-    public BlockNumberResponse parsePartialFrom(
+    public CountBlocksResponse parsePartialFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      return new BlockNumberResponse(input, extensionRegistry);
+      return new CountBlocksResponse(input, extensionRegistry);
     }
   };
 
-  public static com.google.protobuf.Parser<BlockNumberResponse> parser() {
+  public static com.google.protobuf.Parser<CountBlocksResponse> parser() {
     return PARSER;
   }
 
   @java.lang.Override
-  public com.google.protobuf.Parser<BlockNumberResponse> getParserForType() {
+  public com.google.protobuf.Parser<CountBlocksResponse> getParserForType() {
     return PARSER;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.acchain.BlockNumberResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.CountBlocksResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/CountBlocksResponseOrBuilder.java

@@ -0,0 +1,15 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface CountBlocksResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.CountBlocksResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>uint64 count = 1;</code>
+   * @return The count.
+   */
+  long getCount();
+}

src/main/java/bdledger/api/grpc/query/CountTransactionsResponse.java

@@ -1,21 +1,28 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.BlockCountResponse}
+ * Protobuf type {@code bdledger.api.CountTransactionsResponse}
  */
-public  final class BlockCountResponse extends
+public  final class CountTransactionsResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.BlockCountResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.CountTransactionsResponse)
-    BlockCountResponseOrBuilder {
+    CountTransactionsResponseOrBuilder {
 private static final long serialVersionUID = 0L;
-  // Use BlockCountResponse.newBuilder() to construct.
+  // Use CountTransactionsResponse.newBuilder() to construct.
-  private BlockCountResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+  private CountTransactionsResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
     super(builder);
   }
-  private BlockCountResponse() {
+  private CountTransactionsResponse() {
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new CountTransactionsResponse();
   }
 
   @java.lang.Override
@@ -23,7 +30,7 @@ private static final long serialVersionUID = 0L;
   getUnknownFields() {
     return this.unknownFields;
   }
-  private BlockCountResponse(
+  private CountTransactionsResponse(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
@@ -31,7 +38,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -44,7 +50,7 @@ private static final long serialVersionUID = 0L;
             break;
           case 8: {
 
-            blockCount_ = input.readUInt64();
+            count_ = input.readUInt64();
             break;
           }
           default: {
@@ -68,24 +74,25 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountResponse_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountTransactionsResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountResponse_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountTransactionsResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.BlockCountResponse.class, bdchain.api.grpc.txledger.BlockCountResponse.Builder.class);
+            bdledger.api.grpc.query.CountTransactionsResponse.class, bdledger.api.grpc.query.CountTransactionsResponse.Builder.class);
   }
 
-  public static final int BLOCK_COUNT_FIELD_NUMBER = 1;
+  public static final int COUNT_FIELD_NUMBER = 1;
-  private long blockCount_;
+  private long count_;
   /**
-   * <code>uint64 block_count = 1;</code>
+   * <code>uint64 count = 1;</code>
+   * @return The count.
    */
-  public long getBlockCount() {
+  public long getCount() {
-    return blockCount_;
+    return count_;
   }
 
   private byte memoizedIsInitialized = -1;
@@ -102,8 +109,8 @@ private static final long serialVersionUID = 0L;
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output)
                       throws java.io.IOException {
-    if (blockCount_ != 0L) {
+    if (count_ != 0L) {
-      output.writeUInt64(1, blockCount_);
+      output.writeUInt64(1, count_);
     }
     unknownFields.writeTo(output);
   }
@@ -114,9 +121,9 @@ private static final long serialVersionUID = 0L;
     if (size != -1) return size;
 
     size = 0;
-    if (blockCount_ != 0L) {
+    if (count_ != 0L) {
       size += com.google.protobuf.CodedOutputStream
-        .computeUInt64Size(1, blockCount_);
+        .computeUInt64Size(1, count_);
     }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
@@ -128,13 +135,13 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.BlockCountResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.query.CountTransactionsResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.BlockCountResponse other = (bdchain.api.grpc.txledger.BlockCountResponse) obj;
+    bdledger.api.grpc.query.CountTransactionsResponse other = (bdledger.api.grpc.query.CountTransactionsResponse) obj;
 
-    if (getBlockCount()
+    if (getCount()
-        != other.getBlockCount()) return false;
+        != other.getCount()) return false;
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -146,77 +153,77 @@ private static final long serialVersionUID = 0L;
     }
     int hash = 41;
     hash = (19 * hash) + getDescriptor().hashCode();
-    hash = (37 * hash) + BLOCK_COUNT_FIELD_NUMBER;
+    hash = (37 * hash) + COUNT_FIELD_NUMBER;
     hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
-        getBlockCount());
+        getCount());
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.BlockCountResponse parseFrom(
+  public static bdledger.api.grpc.query.CountTransactionsResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -229,7 +236,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.BlockCountResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.CountTransactionsResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -245,26 +252,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.BlockCountResponse}
+   * Protobuf type {@code bdledger.api.CountTransactionsResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.BlockCountResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.CountTransactionsResponse)
-      bdchain.api.grpc.txledger.BlockCountResponseOrBuilder {
+      bdledger.api.grpc.query.CountTransactionsResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountResponse_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountTransactionsResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountResponse_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountTransactionsResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.BlockCountResponse.class, bdchain.api.grpc.txledger.BlockCountResponse.Builder.class);
+              bdledger.api.grpc.query.CountTransactionsResponse.class, bdledger.api.grpc.query.CountTransactionsResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.BlockCountResponse.newBuilder()
+    // Construct using bdledger.api.grpc.query.CountTransactionsResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -282,7 +289,7 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public Builder clear() {
       super.clear();
-      blockCount_ = 0L;
+      count_ = 0L;
 
       return this;
     }
@@ -290,17 +297,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountResponse_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_CountTransactionsResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.BlockCountResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.CountTransactionsResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.BlockCountResponse.getDefaultInstance();
+      return bdledger.api.grpc.query.CountTransactionsResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.BlockCountResponse build() {
+    public bdledger.api.grpc.query.CountTransactionsResponse build() {
-      bdchain.api.grpc.txledger.BlockCountResponse result = buildPartial();
+      bdledger.api.grpc.query.CountTransactionsResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -308,9 +315,9 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.BlockCountResponse buildPartial() {
+    public bdledger.api.grpc.query.CountTransactionsResponse buildPartial() {
-      bdchain.api.grpc.txledger.BlockCountResponse result = new bdchain.api.grpc.txledger.BlockCountResponse(this);
+      bdledger.api.grpc.query.CountTransactionsResponse result = new bdledger.api.grpc.query.CountTransactionsResponse(this);
-      result.blockCount_ = blockCount_;
+      result.count_ = count_;
       onBuilt();
       return result;
     }
@@ -349,18 +356,18 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.BlockCountResponse) {
+      if (other instanceof bdledger.api.grpc.query.CountTransactionsResponse) {
-        return mergeFrom((bdchain.api.grpc.txledger.BlockCountResponse)other);
+        return mergeFrom((bdledger.api.grpc.query.CountTransactionsResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.BlockCountResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.CountTransactionsResponse other) {
-      if (other == bdchain.api.grpc.txledger.BlockCountResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.CountTransactionsResponse.getDefaultInstance()) return this;
-      if (other.getBlockCount() != 0L) {
+      if (other.getCount() != 0L) {
-        setBlockCount(other.getBlockCount());
+        setCount(other.getCount());
       }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
@@ -377,11 +384,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.BlockCountResponse parsedMessage = null;
+      bdledger.api.grpc.query.CountTransactionsResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.BlockCountResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.CountTransactionsResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -391,28 +398,32 @@ private static final long serialVersionUID = 0L;
       return this;
     }
 
-    private long blockCount_ ;
+    private long count_ ;
     /**
-     * <code>uint64 block_count = 1;</code>
+     * <code>uint64 count = 1;</code>
+     * @return The count.
      */
-    public long getBlockCount() {
+    public long getCount() {
-      return blockCount_;
+      return count_;
     }
     /**
-     * <code>uint64 block_count = 1;</code>
+     * <code>uint64 count = 1;</code>
+     * @param value The count to set.
+     * @return This builder for chaining.
      */
-    public Builder setBlockCount(long value) {
+    public Builder setCount(long value) {
       
-      blockCount_ = value;
+      count_ = value;
       onChanged();
       return this;
     }
     /**
-     * <code>uint64 block_count = 1;</code>
+     * <code>uint64 count = 1;</code>
+     * @return This builder for chaining.
      */
-    public Builder clearBlockCount() {
+    public Builder clearCount() {
       
-      blockCount_ = 0L;
+      count_ = 0L;
       onChanged();
       return this;
     }
@@ -429,41 +440,41 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.BlockCountResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.CountTransactionsResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.BlockCountResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.CountTransactionsResponse)
-  private static final bdchain.api.grpc.txledger.BlockCountResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.CountTransactionsResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.BlockCountResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.CountTransactionsResponse();
   }
 
-  public static bdchain.api.grpc.txledger.BlockCountResponse getDefaultInstance() {
+  public static bdledger.api.grpc.query.CountTransactionsResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
-  private static final com.google.protobuf.Parser<BlockCountResponse>
+  private static final com.google.protobuf.Parser<CountTransactionsResponse>
-      PARSER = new com.google.protobuf.AbstractParser<BlockCountResponse>() {
+      PARSER = new com.google.protobuf.AbstractParser<CountTransactionsResponse>() {
     @java.lang.Override
-    public BlockCountResponse parsePartialFrom(
+    public CountTransactionsResponse parsePartialFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      return new BlockCountResponse(input, extensionRegistry);
+      return new CountTransactionsResponse(input, extensionRegistry);
     }
   };
 
-  public static com.google.protobuf.Parser<BlockCountResponse> parser() {
+  public static com.google.protobuf.Parser<CountTransactionsResponse> parser() {
     return PARSER;
   }
 
   @java.lang.Override
-  public com.google.protobuf.Parser<BlockCountResponse> getParserForType() {
+  public com.google.protobuf.Parser<CountTransactionsResponse> getParserForType() {
     return PARSER;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.BlockCountResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.CountTransactionsResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/CountTransactionsResponseOrBuilder.java

@@ -0,0 +1,15 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface CountTransactionsResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.CountTransactionsResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>uint64 count = 1;</code>
+   * @return The count.
+   */
+  long getCount();
+}

src/main/java/bdledger/api/grpc/query/GetBlockByHashRequest.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.acchain.GetBlockByHashRequest}
+ * Protobuf type {@code bdledger.api.GetBlockByHashRequest}
  */
 public  final class GetBlockByHashRequest extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.acchain.GetBlockByHashRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetBlockByHashRequest)
     GetBlockByHashRequestOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use GetBlockByHashRequest.newBuilder() to construct.
@@ -20,6 +20,13 @@ private static final long serialVersionUID = 0L;
     hash_ = com.google.protobuf.ByteString.EMPTY;
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetBlockByHashRequest();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -33,7 +40,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -81,21 +87,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByHashRequest_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashRequest_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByHashRequest_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashRequest_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.acchain.GetBlockByHashRequest.class, bdchain.api.grpc.acchain.GetBlockByHashRequest.Builder.class);
+            bdledger.api.grpc.query.GetBlockByHashRequest.class, bdledger.api.grpc.query.GetBlockByHashRequest.Builder.class);
   }
 
   public static final int LEDGER_FIELD_NUMBER = 1;
   private volatile java.lang.Object ledger_;
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   public java.lang.String getLedger() {
     java.lang.Object ref = ledger_;
@@ -111,6 +118,7 @@ private static final long serialVersionUID = 0L;
   }
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   public com.google.protobuf.ByteString
       getLedgerBytes() {
@@ -130,6 +138,7 @@ private static final long serialVersionUID = 0L;
   private com.google.protobuf.ByteString hash_;
   /**
    * <code>bytes hash = 2;</code>
+   * @return The hash.
    */
   public com.google.protobuf.ByteString getHash() {
     return hash_;
@@ -139,6 +148,7 @@ private static final long serialVersionUID = 0L;
   private boolean fullTransaction_;
   /**
    * <code>bool full_transaction = 3;</code>
+   * @return The fullTransaction.
    */
   public boolean getFullTransaction() {
     return fullTransaction_;
@@ -197,10 +207,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.acchain.GetBlockByHashRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.query.GetBlockByHashRequest)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.acchain.GetBlockByHashRequest other = (bdchain.api.grpc.acchain.GetBlockByHashRequest) obj;
+    bdledger.api.grpc.query.GetBlockByHashRequest other = (bdledger.api.grpc.query.GetBlockByHashRequest) obj;
 
     if (!getLedger()
         .equals(other.getLedger())) return false;
@@ -231,69 +241,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashRequest parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -306,7 +316,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.acchain.GetBlockByHashRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.GetBlockByHashRequest prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -322,26 +332,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.acchain.GetBlockByHashRequest}
+   * Protobuf type {@code bdledger.api.GetBlockByHashRequest}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.acchain.GetBlockByHashRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetBlockByHashRequest)
-      bdchain.api.grpc.acchain.GetBlockByHashRequestOrBuilder {
+      bdledger.api.grpc.query.GetBlockByHashRequestOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByHashRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashRequest_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByHashRequest_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashRequest_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.acchain.GetBlockByHashRequest.class, bdchain.api.grpc.acchain.GetBlockByHashRequest.Builder.class);
+              bdledger.api.grpc.query.GetBlockByHashRequest.class, bdledger.api.grpc.query.GetBlockByHashRequest.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.acchain.GetBlockByHashRequest.newBuilder()
+    // Construct using bdledger.api.grpc.query.GetBlockByHashRequest.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -371,17 +381,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByHashRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashRequest_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetBlockByHashRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.GetBlockByHashRequest getDefaultInstanceForType() {
-      return bdchain.api.grpc.acchain.GetBlockByHashRequest.getDefaultInstance();
+      return bdledger.api.grpc.query.GetBlockByHashRequest.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetBlockByHashRequest build() {
+    public bdledger.api.grpc.query.GetBlockByHashRequest build() {
-      bdchain.api.grpc.acchain.GetBlockByHashRequest result = buildPartial();
+      bdledger.api.grpc.query.GetBlockByHashRequest result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -389,8 +399,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetBlockByHashRequest buildPartial() {
+    public bdledger.api.grpc.query.GetBlockByHashRequest buildPartial() {
-      bdchain.api.grpc.acchain.GetBlockByHashRequest result = new bdchain.api.grpc.acchain.GetBlockByHashRequest(this);
+      bdledger.api.grpc.query.GetBlockByHashRequest result = new bdledger.api.grpc.query.GetBlockByHashRequest(this);
       result.ledger_ = ledger_;
       result.hash_ = hash_;
       result.fullTransaction_ = fullTransaction_;
@@ -432,16 +442,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.acchain.GetBlockByHashRequest) {
+      if (other instanceof bdledger.api.grpc.query.GetBlockByHashRequest) {
-        return mergeFrom((bdchain.api.grpc.acchain.GetBlockByHashRequest)other);
+        return mergeFrom((bdledger.api.grpc.query.GetBlockByHashRequest)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.acchain.GetBlockByHashRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.GetBlockByHashRequest other) {
-      if (other == bdchain.api.grpc.acchain.GetBlockByHashRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.GetBlockByHashRequest.getDefaultInstance()) return this;
       if (!other.getLedger().isEmpty()) {
         ledger_ = other.ledger_;
         onChanged();
@@ -467,11 +477,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.acchain.GetBlockByHashRequest parsedMessage = null;
+      bdledger.api.grpc.query.GetBlockByHashRequest parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.acchain.GetBlockByHashRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.GetBlockByHashRequest) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -484,6 +494,7 @@ private static final long serialVersionUID = 0L;
     private java.lang.Object ledger_ = "";
     /**
      * <code>string ledger = 1;</code>
+     * @return The ledger.
      */
     public java.lang.String getLedger() {
       java.lang.Object ref = ledger_;
@@ -499,6 +510,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return The bytes for ledger.
      */
     public com.google.protobuf.ByteString
         getLedgerBytes() {
@@ -515,6 +527,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedger(
         java.lang.String value) {
@@ -528,6 +542,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearLedger() {
       
@@ -537,6 +552,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The bytes for ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedgerBytes(
         com.google.protobuf.ByteString value) {
@@ -553,12 +570,15 @@ private static final long serialVersionUID = 0L;
     private com.google.protobuf.ByteString hash_ = com.google.protobuf.ByteString.EMPTY;
     /**
      * <code>bytes hash = 2;</code>
+     * @return The hash.
      */
     public com.google.protobuf.ByteString getHash() {
       return hash_;
     }
     /**
      * <code>bytes hash = 2;</code>
+     * @param value The hash to set.
+     * @return This builder for chaining.
      */
     public Builder setHash(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -571,6 +591,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>bytes hash = 2;</code>
+     * @return This builder for chaining.
      */
     public Builder clearHash() {
       
@@ -582,12 +603,15 @@ private static final long serialVersionUID = 0L;
     private boolean fullTransaction_ ;
     /**
      * <code>bool full_transaction = 3;</code>
+     * @return The fullTransaction.
      */
     public boolean getFullTransaction() {
       return fullTransaction_;
     }
     /**
      * <code>bool full_transaction = 3;</code>
+     * @param value The fullTransaction to set.
+     * @return This builder for chaining.
      */
     public Builder setFullTransaction(boolean value) {
       
@@ -597,6 +621,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>bool full_transaction = 3;</code>
+     * @return This builder for chaining.
      */
     public Builder clearFullTransaction() {
       
@@ -617,16 +642,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.acchain.GetBlockByHashRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetBlockByHashRequest)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.GetBlockByHashRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetBlockByHashRequest)
-  private static final bdchain.api.grpc.acchain.GetBlockByHashRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.GetBlockByHashRequest DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.GetBlockByHashRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetBlockByHashRequest();
   }
 
-  public static bdchain.api.grpc.acchain.GetBlockByHashRequest getDefaultInstance() {
+  public static bdledger.api.grpc.query.GetBlockByHashRequest getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -651,7 +676,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.acchain.GetBlockByHashRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.GetBlockByHashRequest getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/GetBlockByHashRequestOrBuilder.java

@@ -1,29 +1,33 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 public interface GetBlockByHashRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.GetBlockByHashRequest)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetBlockByHashRequest)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   java.lang.String getLedger();
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   com.google.protobuf.ByteString
       getLedgerBytes();
 
   /**
    * <code>bytes hash = 2;</code>
+   * @return The hash.
    */
   com.google.protobuf.ByteString getHash();
 
   /**
    * <code>bool full_transaction = 3;</code>
+   * @return The fullTransaction.
    */
   boolean getFullTransaction();
 }

src/main/java/bdledger/api/grpc/query/GetBlockByHashResponse.java

@@ -1,22 +1,28 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.BlockCountRequest}
+ * Protobuf type {@code bdledger.api.GetBlockByHashResponse}
  */
-public  final class BlockCountRequest extends
+public  final class GetBlockByHashResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.BlockCountRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetBlockByHashResponse)
-    BlockCountRequestOrBuilder {
+    GetBlockByHashResponseOrBuilder {
 private static final long serialVersionUID = 0L;
-  // Use BlockCountRequest.newBuilder() to construct.
+  // Use GetBlockByHashResponse.newBuilder() to construct.
-  private BlockCountRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+  private GetBlockByHashResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
     super(builder);
   }
-  private BlockCountRequest() {
+  private GetBlockByHashResponse() {
-    ledger_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetBlockByHashResponse();
   }
 
   @java.lang.Override
@@ -24,7 +30,7 @@ private static final long serialVersionUID = 0L;
   getUnknownFields() {
     return this.unknownFields;
   }
-  private BlockCountRequest(
+  private GetBlockByHashResponse(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
@@ -32,7 +38,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -44,9 +49,16 @@ private static final long serialVersionUID = 0L;
             done = true;
             break;
           case 10: {
-            java.lang.String s = input.readStringRequireUtf8();
+            bdledger.api.grpc.common.Block.Builder subBuilder = null;
+            if (block_ != null) {
+              subBuilder = block_.toBuilder();
+            }
+            block_ = input.readMessage(bdledger.api.grpc.common.Block.parser(), extensionRegistry);
+            if (subBuilder != null) {
+              subBuilder.mergeFrom(block_);
+              block_ = subBuilder.buildPartial();
+            }
 
-            ledger_ = s;
             break;
           }
           default: {
@@ -70,49 +82,38 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountRequest_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountRequest_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.BlockCountRequest.class, bdchain.api.grpc.txledger.BlockCountRequest.Builder.class);
+            bdledger.api.grpc.query.GetBlockByHashResponse.class, bdledger.api.grpc.query.GetBlockByHashResponse.Builder.class);
   }
 
-  public static final int LEDGER_FIELD_NUMBER = 1;
+  public static final int BLOCK_FIELD_NUMBER = 1;
-  private volatile java.lang.Object ledger_;
+  private bdledger.api.grpc.common.Block block_;
   /**
-   * <code>string ledger = 1;</code>
+   * <code>.bdledger.api.Block block = 1;</code>
+   * @return Whether the block field is set.
    */
-  public java.lang.String getLedger() {
+  public boolean hasBlock() {
-    java.lang.Object ref = ledger_;
+    return block_ != null;
-    if (ref instanceof java.lang.String) {
-      return (java.lang.String) ref;
-    } else {
-      com.google.protobuf.ByteString bs = 
-          (com.google.protobuf.ByteString) ref;
-      java.lang.String s = bs.toStringUtf8();
-      ledger_ = s;
-      return s;
-    }
   }
   /**
-   * <code>string ledger = 1;</code>
+   * <code>.bdledger.api.Block block = 1;</code>
+   * @return The block.
    */
-  public com.google.protobuf.ByteString
+  public bdledger.api.grpc.common.Block getBlock() {
-      getLedgerBytes() {
+    return block_ == null ? bdledger.api.grpc.common.Block.getDefaultInstance() : block_;
-    java.lang.Object ref = ledger_;
+  }
-    if (ref instanceof java.lang.String) {
+  /**
-      com.google.protobuf.ByteString b = 
+   * <code>.bdledger.api.Block block = 1;</code>
-          com.google.protobuf.ByteString.copyFromUtf8(
+   */
-              (java.lang.String) ref);
+  public bdledger.api.grpc.common.BlockOrBuilder getBlockOrBuilder() {
-      ledger_ = b;
+    return getBlock();
-      return b;
-    } else {
-      return (com.google.protobuf.ByteString) ref;
-    }
   }
 
   private byte memoizedIsInitialized = -1;
@@ -129,8 +130,8 @@ private static final long serialVersionUID = 0L;
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output)
                       throws java.io.IOException {
-    if (!getLedgerBytes().isEmpty()) {
+    if (block_ != null) {
-      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, ledger_);
+      output.writeMessage(1, getBlock());
     }
     unknownFields.writeTo(output);
   }
@@ -141,8 +142,9 @@ private static final long serialVersionUID = 0L;
     if (size != -1) return size;
 
     size = 0;
-    if (!getLedgerBytes().isEmpty()) {
+    if (block_ != null) {
-      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, ledger_);
+      size += com.google.protobuf.CodedOutputStream
+        .computeMessageSize(1, getBlock());
     }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
@@ -154,13 +156,16 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.BlockCountRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.query.GetBlockByHashResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.BlockCountRequest other = (bdchain.api.grpc.txledger.BlockCountRequest) obj;
+    bdledger.api.grpc.query.GetBlockByHashResponse other = (bdledger.api.grpc.query.GetBlockByHashResponse) obj;
 
-    if (!getLedger()
+    if (hasBlock() != other.hasBlock()) return false;
-        .equals(other.getLedger())) return false;
+    if (hasBlock()) {
+      if (!getBlock()
+          .equals(other.getBlock())) return false;
+    }
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -172,76 +177,78 @@ private static final long serialVersionUID = 0L;
     }
     int hash = 41;
     hash = (19 * hash) + getDescriptor().hashCode();
-    hash = (37 * hash) + LEDGER_FIELD_NUMBER;
+    if (hasBlock()) {
-    hash = (53 * hash) + getLedger().hashCode();
+      hash = (37 * hash) + BLOCK_FIELD_NUMBER;
+      hash = (53 * hash) + getBlock().hashCode();
+    }
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.BlockCountRequest parseFrom(
+  public static bdledger.api.grpc.query.GetBlockByHashResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -254,7 +261,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.BlockCountRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.GetBlockByHashResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -270,26 +277,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.BlockCountRequest}
+   * Protobuf type {@code bdledger.api.GetBlockByHashResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.BlockCountRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetBlockByHashResponse)
-      bdchain.api.grpc.txledger.BlockCountRequestOrBuilder {
+      bdledger.api.grpc.query.GetBlockByHashResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountRequest_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.BlockCountRequest.class, bdchain.api.grpc.txledger.BlockCountRequest.Builder.class);
+              bdledger.api.grpc.query.GetBlockByHashResponse.class, bdledger.api.grpc.query.GetBlockByHashResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.BlockCountRequest.newBuilder()
+    // Construct using bdledger.api.grpc.query.GetBlockByHashResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -307,25 +314,29 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public Builder clear() {
       super.clear();
-      ledger_ = "";
+      if (blockBuilder_ == null) {
-
+        block_ = null;
+      } else {
+        block_ = null;
+        blockBuilder_ = null;
+      }
       return this;
     }
 
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_BlockCountRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlockByHashResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.BlockCountRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.GetBlockByHashResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.BlockCountRequest.getDefaultInstance();
+      return bdledger.api.grpc.query.GetBlockByHashResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.BlockCountRequest build() {
+    public bdledger.api.grpc.query.GetBlockByHashResponse build() {
-      bdchain.api.grpc.txledger.BlockCountRequest result = buildPartial();
+      bdledger.api.grpc.query.GetBlockByHashResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -333,9 +344,13 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.BlockCountRequest buildPartial() {
+    public bdledger.api.grpc.query.GetBlockByHashResponse buildPartial() {
-      bdchain.api.grpc.txledger.BlockCountRequest result = new bdchain.api.grpc.txledger.BlockCountRequest(this);
+      bdledger.api.grpc.query.GetBlockByHashResponse result = new bdledger.api.grpc.query.GetBlockByHashResponse(this);
-      result.ledger_ = ledger_;
+      if (blockBuilder_ == null) {
+        result.block_ = block_;
+      } else {
+        result.block_ = blockBuilder_.build();
+      }
       onBuilt();
       return result;
     }
@@ -374,19 +389,18 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.BlockCountRequest) {
+      if (other instanceof bdledger.api.grpc.query.GetBlockByHashResponse) {
-        return mergeFrom((bdchain.api.grpc.txledger.BlockCountRequest)other);
+        return mergeFrom((bdledger.api.grpc.query.GetBlockByHashResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.BlockCountRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.GetBlockByHashResponse other) {
-      if (other == bdchain.api.grpc.txledger.BlockCountRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.GetBlockByHashResponse.getDefaultInstance()) return this;
-      if (!other.getLedger().isEmpty()) {
+      if (other.hasBlock()) {
-        ledger_ = other.ledger_;
+        mergeBlock(other.getBlock());
-        onChanged();
       }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
@@ -403,11 +417,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.BlockCountRequest parsedMessage = null;
+      bdledger.api.grpc.query.GetBlockByHashResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.BlockCountRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.GetBlockByHashResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -417,73 +431,123 @@ private static final long serialVersionUID = 0L;
       return this;
     }
 
-    private java.lang.Object ledger_ = "";
+    private bdledger.api.grpc.common.Block block_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+        bdledger.api.grpc.common.Block, bdledger.api.grpc.common.Block.Builder, bdledger.api.grpc.common.BlockOrBuilder> blockBuilder_;
     /**
-     * <code>string ledger = 1;</code>
+     * <code>.bdledger.api.Block block = 1;</code>
+     * @return Whether the block field is set.
      */
-    public java.lang.String getLedger() {
+    public boolean hasBlock() {
-      java.lang.Object ref = ledger_;
+      return blockBuilder_ != null || block_ != null;
-      if (!(ref instanceof java.lang.String)) {
+    }
-        com.google.protobuf.ByteString bs =
+    /**
-            (com.google.protobuf.ByteString) ref;
+     * <code>.bdledger.api.Block block = 1;</code>
-        java.lang.String s = bs.toStringUtf8();
+     * @return The block.
-        ledger_ = s;
+     */
-        return s;
+    public bdledger.api.grpc.common.Block getBlock() {
+      if (blockBuilder_ == null) {
+        return block_ == null ? bdledger.api.grpc.common.Block.getDefaultInstance() : block_;
       } else {
-        return (java.lang.String) ref;
+        return blockBuilder_.getMessage();
       }
     }
     /**
-     * <code>string ledger = 1;</code>
+     * <code>.bdledger.api.Block block = 1;</code>
      */
-    public com.google.protobuf.ByteString
+    public Builder setBlock(bdledger.api.grpc.common.Block value) {
-        getLedgerBytes() {
+      if (blockBuilder_ == null) {
-      java.lang.Object ref = ledger_;
+        if (value == null) {
-      if (ref instanceof String) {
+          throw new NullPointerException();
-        com.google.protobuf.ByteString b = 
+        }
-            com.google.protobuf.ByteString.copyFromUtf8(
+        block_ = value;
-                (java.lang.String) ref);
+        onChanged();
-        ledger_ = b;
-        return b;
       } else {
-        return (com.google.protobuf.ByteString) ref;
+        blockBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Block block = 1;</code>
+     */
+    public Builder setBlock(
+        bdledger.api.grpc.common.Block.Builder builderForValue) {
+      if (blockBuilder_ == null) {
+        block_ = builderForValue.build();
+        onChanged();
+      } else {
+        blockBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Block block = 1;</code>
+     */
+    public Builder mergeBlock(bdledger.api.grpc.common.Block value) {
+      if (blockBuilder_ == null) {
+        if (block_ != null) {
+          block_ =
+            bdledger.api.grpc.common.Block.newBuilder(block_).mergeFrom(value).buildPartial();
+        } else {
+          block_ = value;
+        }
+        onChanged();
+      } else {
+        blockBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Block block = 1;</code>
+     */
+    public Builder clearBlock() {
+      if (blockBuilder_ == null) {
+        block_ = null;
+        onChanged();
+      } else {
+        block_ = null;
+        blockBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Block block = 1;</code>
+     */
+    public bdledger.api.grpc.common.Block.Builder getBlockBuilder() {
+      
+      onChanged();
+      return getBlockFieldBuilder().getBuilder();
+    }
+    /**
+     * <code>.bdledger.api.Block block = 1;</code>
+     */
+    public bdledger.api.grpc.common.BlockOrBuilder getBlockOrBuilder() {
+      if (blockBuilder_ != null) {
+        return blockBuilder_.getMessageOrBuilder();
+      } else {
+        return block_ == null ?
+            bdledger.api.grpc.common.Block.getDefaultInstance() : block_;
       }
     }
     /**
-     * <code>string ledger = 1;</code>
+     * <code>.bdledger.api.Block block = 1;</code>
      */
-    public Builder setLedger(
+    private com.google.protobuf.SingleFieldBuilderV3<
-        java.lang.String value) {
+        bdledger.api.grpc.common.Block, bdledger.api.grpc.common.Block.Builder, bdledger.api.grpc.common.BlockOrBuilder> 
-      if (value == null) {
+        getBlockFieldBuilder() {
-    throw new NullPointerException();
+      if (blockBuilder_ == null) {
-  }
+        blockBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-  
+            bdledger.api.grpc.common.Block, bdledger.api.grpc.common.Block.Builder, bdledger.api.grpc.common.BlockOrBuilder>(
-      ledger_ = value;
+                getBlock(),
-      onChanged();
+                getParentForChildren(),
-      return this;
+                isClean());
-    }
+        block_ = null;
-    /**
+      }
-     * <code>string ledger = 1;</code>
+      return blockBuilder_;
-     */
-    public Builder clearLedger() {
-      
-      ledger_ = getDefaultInstance().getLedger();
-      onChanged();
-      return this;
-    }
-    /**
-     * <code>string ledger = 1;</code>
-     */
-    public Builder setLedgerBytes(
-        com.google.protobuf.ByteString value) {
-      if (value == null) {
-    throw new NullPointerException();
-  }
-  checkByteStringIsUtf8(value);
-      
-      ledger_ = value;
-      onChanged();
-      return this;
     }
     @java.lang.Override
     public final Builder setUnknownFields(
@@ -498,41 +562,41 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.BlockCountRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetBlockByHashResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.BlockCountRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetBlockByHashResponse)
-  private static final bdchain.api.grpc.txledger.BlockCountRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.GetBlockByHashResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.BlockCountRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetBlockByHashResponse();
   }
 
-  public static bdchain.api.grpc.txledger.BlockCountRequest getDefaultInstance() {
+  public static bdledger.api.grpc.query.GetBlockByHashResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
-  private static final com.google.protobuf.Parser<BlockCountRequest>
+  private static final com.google.protobuf.Parser<GetBlockByHashResponse>
-      PARSER = new com.google.protobuf.AbstractParser<BlockCountRequest>() {
+      PARSER = new com.google.protobuf.AbstractParser<GetBlockByHashResponse>() {
     @java.lang.Override
-    public BlockCountRequest parsePartialFrom(
+    public GetBlockByHashResponse parsePartialFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      return new BlockCountRequest(input, extensionRegistry);
+      return new GetBlockByHashResponse(input, extensionRegistry);
     }
   };
 
-  public static com.google.protobuf.Parser<BlockCountRequest> parser() {
+  public static com.google.protobuf.Parser<GetBlockByHashResponse> parser() {
     return PARSER;
   }
 
   @java.lang.Override
-  public com.google.protobuf.Parser<BlockCountRequest> getParserForType() {
+  public com.google.protobuf.Parser<GetBlockByHashResponse> getParserForType() {
     return PARSER;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.BlockCountRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.GetBlockByHashResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/GetBlockByHashResponseOrBuilder.java

@@ -0,0 +1,24 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface GetBlockByHashResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetBlockByHashResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>.bdledger.api.Block block = 1;</code>
+   * @return Whether the block field is set.
+   */
+  boolean hasBlock();
+  /**
+   * <code>.bdledger.api.Block block = 1;</code>
+   * @return The block.
+   */
+  bdledger.api.grpc.common.Block getBlock();
+  /**
+   * <code>.bdledger.api.Block block = 1;</code>
+   */
+  bdledger.api.grpc.common.BlockOrBuilder getBlockOrBuilder();
+}

src/main/java/bdledger/api/grpc/query/GetBlocksResponse.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/tx_ledger.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.txledger;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.txledger.GetBlocksResponse}
+ * Protobuf type {@code bdledger.api.GetBlocksResponse}
  */
 public  final class GetBlocksResponse extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.txledger.GetBlocksResponse)
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetBlocksResponse)
     GetBlocksResponseOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use GetBlocksResponse.newBuilder() to construct.
@@ -19,6 +19,13 @@ private static final long serialVersionUID = 0L;
     blocks_ = java.util.Collections.emptyList();
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetBlocksResponse();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -45,11 +52,21 @@ private static final long serialVersionUID = 0L;
             break;
           case 10: {
             if (!((mutable_bitField0_ & 0x00000001) != 0)) {
-              blocks_ = new java.util.ArrayList<bdchain.api.grpc.txledger.Block>();
+              blocks_ = new java.util.ArrayList<bdledger.api.grpc.common.Block>();
               mutable_bitField0_ |= 0x00000001;
             }
             blocks_.add(
-                input.readMessage(bdchain.api.grpc.txledger.Block.parser(), extensionRegistry));
+                input.readMessage(bdledger.api.grpc.common.Block.parser(), extensionRegistry));
+            break;
+          }
+          case 16: {
+
+            startTimestamp_ = input.readInt64();
+            break;
+          }
+          case 24: {
+
+            endTimestamp_ = input.readInt64();
             break;
           }
           default: {
@@ -76,52 +93,72 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetBlocksResponse_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlocksResponse_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetBlocksResponse_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlocksResponse_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.txledger.GetBlocksResponse.class, bdchain.api.grpc.txledger.GetBlocksResponse.Builder.class);
+            bdledger.api.grpc.query.GetBlocksResponse.class, bdledger.api.grpc.query.GetBlocksResponse.Builder.class);
   }
 
   public static final int BLOCKS_FIELD_NUMBER = 1;
-  private java.util.List<bdchain.api.grpc.txledger.Block> blocks_;
+  private java.util.List<bdledger.api.grpc.common.Block> blocks_;
   /**
-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
    */
-  public java.util.List<bdchain.api.grpc.txledger.Block> getBlocksList() {
+  public java.util.List<bdledger.api.grpc.common.Block> getBlocksList() {
     return blocks_;
   }
   /**
-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
    */
-  public java.util.List<? extends bdchain.api.grpc.txledger.BlockOrBuilder> 
+  public java.util.List<? extends bdledger.api.grpc.common.BlockOrBuilder> 
       getBlocksOrBuilderList() {
     return blocks_;
   }
   /**
-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
    */
   public int getBlocksCount() {
     return blocks_.size();
   }
   /**
-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
    */
-  public bdchain.api.grpc.txledger.Block getBlocks(int index) {
+  public bdledger.api.grpc.common.Block getBlocks(int index) {
     return blocks_.get(index);
   }
   /**
-   * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
    */
-  public bdchain.api.grpc.txledger.BlockOrBuilder getBlocksOrBuilder(
+  public bdledger.api.grpc.common.BlockOrBuilder getBlocksOrBuilder(
       int index) {
     return blocks_.get(index);
   }
 
+  public static final int START_TIMESTAMP_FIELD_NUMBER = 2;
+  private long startTimestamp_;
+  /**
+   * <code>int64 start_timestamp = 2;</code>
+   * @return The startTimestamp.
+   */
+  public long getStartTimestamp() {
+    return startTimestamp_;
+  }
+
+  public static final int END_TIMESTAMP_FIELD_NUMBER = 3;
+  private long endTimestamp_;
+  /**
+   * <code>int64 end_timestamp = 3;</code>
+   * @return The endTimestamp.
+   */
+  public long getEndTimestamp() {
+    return endTimestamp_;
+  }
+
   private byte memoizedIsInitialized = -1;
   @java.lang.Override
   public final boolean isInitialized() {
@@ -139,6 +176,12 @@ private static final long serialVersionUID = 0L;
     for (int i = 0; i < blocks_.size(); i++) {
       output.writeMessage(1, blocks_.get(i));
     }
+    if (startTimestamp_ != 0L) {
+      output.writeInt64(2, startTimestamp_);
+    }
+    if (endTimestamp_ != 0L) {
+      output.writeInt64(3, endTimestamp_);
+    }
     unknownFields.writeTo(output);
   }
 
@@ -152,6 +195,14 @@ private static final long serialVersionUID = 0L;
       size += com.google.protobuf.CodedOutputStream
         .computeMessageSize(1, blocks_.get(i));
     }
+    if (startTimestamp_ != 0L) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeInt64Size(2, startTimestamp_);
+    }
+    if (endTimestamp_ != 0L) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeInt64Size(3, endTimestamp_);
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -162,13 +213,17 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.txledger.GetBlocksResponse)) {
+    if (!(obj instanceof bdledger.api.grpc.query.GetBlocksResponse)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.txledger.GetBlocksResponse other = (bdchain.api.grpc.txledger.GetBlocksResponse) obj;
+    bdledger.api.grpc.query.GetBlocksResponse other = (bdledger.api.grpc.query.GetBlocksResponse) obj;
 
     if (!getBlocksList()
         .equals(other.getBlocksList())) return false;
+    if (getStartTimestamp()
+        != other.getStartTimestamp()) return false;
+    if (getEndTimestamp()
+        != other.getEndTimestamp()) return false;
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -184,74 +239,80 @@ private static final long serialVersionUID = 0L;
       hash = (37 * hash) + BLOCKS_FIELD_NUMBER;
       hash = (53 * hash) + getBlocksList().hashCode();
     }
+    hash = (37 * hash) + START_TIMESTAMP_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+        getStartTimestamp());
+    hash = (37 * hash) + END_TIMESTAMP_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+        getEndTimestamp());
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
   }
 
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetBlocksResponse parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseDelimitedFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.txledger.GetBlocksResponse parseFrom(
+  public static bdledger.api.grpc.query.GetBlocksResponse parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -264,7 +325,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.txledger.GetBlocksResponse prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.GetBlocksResponse prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -280,26 +341,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.txledger.GetBlocksResponse}
+   * Protobuf type {@code bdledger.api.GetBlocksResponse}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.txledger.GetBlocksResponse)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetBlocksResponse)
-      bdchain.api.grpc.txledger.GetBlocksResponseOrBuilder {
+      bdledger.api.grpc.query.GetBlocksResponseOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetBlocksResponse_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlocksResponse_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetBlocksResponse_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlocksResponse_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.txledger.GetBlocksResponse.class, bdchain.api.grpc.txledger.GetBlocksResponse.Builder.class);
+              bdledger.api.grpc.query.GetBlocksResponse.class, bdledger.api.grpc.query.GetBlocksResponse.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.txledger.GetBlocksResponse.newBuilder()
+    // Construct using bdledger.api.grpc.query.GetBlocksResponse.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -324,23 +385,27 @@ private static final long serialVersionUID = 0L;
       } else {
         blocksBuilder_.clear();
       }
+      startTimestamp_ = 0L;
+
+      endTimestamp_ = 0L;
+
       return this;
     }
 
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.txledger.TransactionLedgerProto.internal_static_bdchain_api_txledger_GetBlocksResponse_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetBlocksResponse_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.GetBlocksResponse getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.GetBlocksResponse getDefaultInstanceForType() {
-      return bdchain.api.grpc.txledger.GetBlocksResponse.getDefaultInstance();
+      return bdledger.api.grpc.query.GetBlocksResponse.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.GetBlocksResponse build() {
+    public bdledger.api.grpc.query.GetBlocksResponse build() {
-      bdchain.api.grpc.txledger.GetBlocksResponse result = buildPartial();
+      bdledger.api.grpc.query.GetBlocksResponse result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -348,8 +413,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.txledger.GetBlocksResponse buildPartial() {
+    public bdledger.api.grpc.query.GetBlocksResponse buildPartial() {
-      bdchain.api.grpc.txledger.GetBlocksResponse result = new bdchain.api.grpc.txledger.GetBlocksResponse(this);
+      bdledger.api.grpc.query.GetBlocksResponse result = new bdledger.api.grpc.query.GetBlocksResponse(this);
       int from_bitField0_ = bitField0_;
       if (blocksBuilder_ == null) {
         if (((bitField0_ & 0x00000001) != 0)) {
@@ -360,6 +425,8 @@ private static final long serialVersionUID = 0L;
       } else {
         result.blocks_ = blocksBuilder_.build();
       }
+      result.startTimestamp_ = startTimestamp_;
+      result.endTimestamp_ = endTimestamp_;
       onBuilt();
       return result;
     }
@@ -398,16 +465,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.txledger.GetBlocksResponse) {
+      if (other instanceof bdledger.api.grpc.query.GetBlocksResponse) {
-        return mergeFrom((bdchain.api.grpc.txledger.GetBlocksResponse)other);
+        return mergeFrom((bdledger.api.grpc.query.GetBlocksResponse)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.txledger.GetBlocksResponse other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.GetBlocksResponse other) {
-      if (other == bdchain.api.grpc.txledger.GetBlocksResponse.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.GetBlocksResponse.getDefaultInstance()) return this;
       if (blocksBuilder_ == null) {
         if (!other.blocks_.isEmpty()) {
           if (blocks_.isEmpty()) {
@@ -434,6 +501,12 @@ private static final long serialVersionUID = 0L;
           }
         }
       }
+      if (other.getStartTimestamp() != 0L) {
+        setStartTimestamp(other.getStartTimestamp());
+      }
+      if (other.getEndTimestamp() != 0L) {
+        setEndTimestamp(other.getEndTimestamp());
+      }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
       return this;
@@ -449,11 +522,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.txledger.GetBlocksResponse parsedMessage = null;
+      bdledger.api.grpc.query.GetBlocksResponse parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.txledger.GetBlocksResponse) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.GetBlocksResponse) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -464,22 +537,22 @@ private static final long serialVersionUID = 0L;
     }
     private int bitField0_;
 
-    private java.util.List<bdchain.api.grpc.txledger.Block> blocks_ =
+    private java.util.List<bdledger.api.grpc.common.Block> blocks_ =
       java.util.Collections.emptyList();
     private void ensureBlocksIsMutable() {
       if (!((bitField0_ & 0x00000001) != 0)) {
-        blocks_ = new java.util.ArrayList<bdchain.api.grpc.txledger.Block>(blocks_);
+        blocks_ = new java.util.ArrayList<bdledger.api.grpc.common.Block>(blocks_);
         bitField0_ |= 0x00000001;
        }
     }
 
     private com.google.protobuf.RepeatedFieldBuilderV3<
-        bdchain.api.grpc.txledger.Block, bdchain.api.grpc.txledger.Block.Builder, bdchain.api.grpc.txledger.BlockOrBuilder> blocksBuilder_;
+        bdledger.api.grpc.common.Block, bdledger.api.grpc.common.Block.Builder, bdledger.api.grpc.common.BlockOrBuilder> blocksBuilder_;
 
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public java.util.List<bdchain.api.grpc.txledger.Block> getBlocksList() {
+    public java.util.List<bdledger.api.grpc.common.Block> getBlocksList() {
       if (blocksBuilder_ == null) {
         return java.util.Collections.unmodifiableList(blocks_);
       } else {
@@ -487,7 +560,7 @@ private static final long serialVersionUID = 0L;
       }
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public int getBlocksCount() {
       if (blocksBuilder_ == null) {
@@ -497,9 +570,9 @@ private static final long serialVersionUID = 0L;
       }
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public bdchain.api.grpc.txledger.Block getBlocks(int index) {
+    public bdledger.api.grpc.common.Block getBlocks(int index) {
       if (blocksBuilder_ == null) {
         return blocks_.get(index);
       } else {
@@ -507,10 +580,10 @@ private static final long serialVersionUID = 0L;
       }
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder setBlocks(
-        int index, bdchain.api.grpc.txledger.Block value) {
+        int index, bdledger.api.grpc.common.Block value) {
       if (blocksBuilder_ == null) {
         if (value == null) {
           throw new NullPointerException();
@@ -524,10 +597,10 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder setBlocks(
-        int index, bdchain.api.grpc.txledger.Block.Builder builderForValue) {
+        int index, bdledger.api.grpc.common.Block.Builder builderForValue) {
       if (blocksBuilder_ == null) {
         ensureBlocksIsMutable();
         blocks_.set(index, builderForValue.build());
@@ -538,9 +611,9 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public Builder addBlocks(bdchain.api.grpc.txledger.Block value) {
+    public Builder addBlocks(bdledger.api.grpc.common.Block value) {
       if (blocksBuilder_ == null) {
         if (value == null) {
           throw new NullPointerException();
@@ -554,10 +627,10 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder addBlocks(
-        int index, bdchain.api.grpc.txledger.Block value) {
+        int index, bdledger.api.grpc.common.Block value) {
       if (blocksBuilder_ == null) {
         if (value == null) {
           throw new NullPointerException();
@@ -571,10 +644,10 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder addBlocks(
-        bdchain.api.grpc.txledger.Block.Builder builderForValue) {
+        bdledger.api.grpc.common.Block.Builder builderForValue) {
       if (blocksBuilder_ == null) {
         ensureBlocksIsMutable();
         blocks_.add(builderForValue.build());
@@ -585,10 +658,10 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder addBlocks(
-        int index, bdchain.api.grpc.txledger.Block.Builder builderForValue) {
+        int index, bdledger.api.grpc.common.Block.Builder builderForValue) {
       if (blocksBuilder_ == null) {
         ensureBlocksIsMutable();
         blocks_.add(index, builderForValue.build());
@@ -599,10 +672,10 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder addAllBlocks(
-        java.lang.Iterable<? extends bdchain.api.grpc.txledger.Block> values) {
+        java.lang.Iterable<? extends bdledger.api.grpc.common.Block> values) {
       if (blocksBuilder_ == null) {
         ensureBlocksIsMutable();
         com.google.protobuf.AbstractMessageLite.Builder.addAll(
@@ -614,7 +687,7 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder clearBlocks() {
       if (blocksBuilder_ == null) {
@@ -627,7 +700,7 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
     public Builder removeBlocks(int index) {
       if (blocksBuilder_ == null) {
@@ -640,16 +713,16 @@ private static final long serialVersionUID = 0L;
       return this;
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public bdchain.api.grpc.txledger.Block.Builder getBlocksBuilder(
+    public bdledger.api.grpc.common.Block.Builder getBlocksBuilder(
         int index) {
       return getBlocksFieldBuilder().getBuilder(index);
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public bdchain.api.grpc.txledger.BlockOrBuilder getBlocksOrBuilder(
+    public bdledger.api.grpc.common.BlockOrBuilder getBlocksOrBuilder(
         int index) {
       if (blocksBuilder_ == null) {
         return blocks_.get(index);  } else {
@@ -657,9 +730,9 @@ private static final long serialVersionUID = 0L;
       }
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public java.util.List<? extends bdchain.api.grpc.txledger.BlockOrBuilder> 
+    public java.util.List<? extends bdledger.api.grpc.common.BlockOrBuilder> 
          getBlocksOrBuilderList() {
       if (blocksBuilder_ != null) {
         return blocksBuilder_.getMessageOrBuilderList();
@@ -668,33 +741,33 @@ private static final long serialVersionUID = 0L;
       }
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public bdchain.api.grpc.txledger.Block.Builder addBlocksBuilder() {
+    public bdledger.api.grpc.common.Block.Builder addBlocksBuilder() {
       return getBlocksFieldBuilder().addBuilder(
-          bdchain.api.grpc.txledger.Block.getDefaultInstance());
+          bdledger.api.grpc.common.Block.getDefaultInstance());
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public bdchain.api.grpc.txledger.Block.Builder addBlocksBuilder(
+    public bdledger.api.grpc.common.Block.Builder addBlocksBuilder(
         int index) {
       return getBlocksFieldBuilder().addBuilder(
-          index, bdchain.api.grpc.txledger.Block.getDefaultInstance());
+          index, bdledger.api.grpc.common.Block.getDefaultInstance());
     }
     /**
-     * <code>repeated .bdchain.api.txledger.Block blocks = 1;</code>
+     * <code>repeated .bdledger.api.Block blocks = 1;</code>
      */
-    public java.util.List<bdchain.api.grpc.txledger.Block.Builder> 
+    public java.util.List<bdledger.api.grpc.common.Block.Builder> 
          getBlocksBuilderList() {
       return getBlocksFieldBuilder().getBuilderList();
     }
     private com.google.protobuf.RepeatedFieldBuilderV3<
-        bdchain.api.grpc.txledger.Block, bdchain.api.grpc.txledger.Block.Builder, bdchain.api.grpc.txledger.BlockOrBuilder> 
+        bdledger.api.grpc.common.Block, bdledger.api.grpc.common.Block.Builder, bdledger.api.grpc.common.BlockOrBuilder> 
         getBlocksFieldBuilder() {
       if (blocksBuilder_ == null) {
         blocksBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
-            bdchain.api.grpc.txledger.Block, bdchain.api.grpc.txledger.Block.Builder, bdchain.api.grpc.txledger.BlockOrBuilder>(
+            bdledger.api.grpc.common.Block, bdledger.api.grpc.common.Block.Builder, bdledger.api.grpc.common.BlockOrBuilder>(
                 blocks_,
                 ((bitField0_ & 0x00000001) != 0),
                 getParentForChildren(),
@@ -703,6 +776,66 @@ private static final long serialVersionUID = 0L;
       }
       return blocksBuilder_;
     }
+
+    private long startTimestamp_ ;
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     * @return The startTimestamp.
+     */
+    public long getStartTimestamp() {
+      return startTimestamp_;
+    }
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     * @param value The startTimestamp to set.
+     * @return This builder for chaining.
+     */
+    public Builder setStartTimestamp(long value) {
+      
+      startTimestamp_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     * @return This builder for chaining.
+     */
+    public Builder clearStartTimestamp() {
+      
+      startTimestamp_ = 0L;
+      onChanged();
+      return this;
+    }
+
+    private long endTimestamp_ ;
+    /**
+     * <code>int64 end_timestamp = 3;</code>
+     * @return The endTimestamp.
+     */
+    public long getEndTimestamp() {
+      return endTimestamp_;
+    }
+    /**
+     * <code>int64 end_timestamp = 3;</code>
+     * @param value The endTimestamp to set.
+     * @return This builder for chaining.
+     */
+    public Builder setEndTimestamp(long value) {
+      
+      endTimestamp_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     * <code>int64 end_timestamp = 3;</code>
+     * @return This builder for chaining.
+     */
+    public Builder clearEndTimestamp() {
+      
+      endTimestamp_ = 0L;
+      onChanged();
+      return this;
+    }
     @java.lang.Override
     public final Builder setUnknownFields(
         final com.google.protobuf.UnknownFieldSet unknownFields) {
@@ -716,16 +849,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.txledger.GetBlocksResponse)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetBlocksResponse)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.txledger.GetBlocksResponse)
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetBlocksResponse)
-  private static final bdchain.api.grpc.txledger.GetBlocksResponse DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.GetBlocksResponse DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.txledger.GetBlocksResponse();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetBlocksResponse();
   }
 
-  public static bdchain.api.grpc.txledger.GetBlocksResponse getDefaultInstance() {
+  public static bdledger.api.grpc.query.GetBlocksResponse getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -750,7 +883,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.txledger.GetBlocksResponse getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.GetBlocksResponse getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/GetBlocksResponseOrBuilder.java

@@ -0,0 +1,45 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface GetBlocksResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetBlocksResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
+   */
+  java.util.List<bdledger.api.grpc.common.Block> 
+      getBlocksList();
+  /**
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
+   */
+  bdledger.api.grpc.common.Block getBlocks(int index);
+  /**
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
+   */
+  int getBlocksCount();
+  /**
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
+   */
+  java.util.List<? extends bdledger.api.grpc.common.BlockOrBuilder> 
+      getBlocksOrBuilderList();
+  /**
+   * <code>repeated .bdledger.api.Block blocks = 1;</code>
+   */
+  bdledger.api.grpc.common.BlockOrBuilder getBlocksOrBuilder(
+      int index);
+
+  /**
+   * <code>int64 start_timestamp = 2;</code>
+   * @return The startTimestamp.
+   */
+  long getStartTimestamp();
+
+  /**
+   * <code>int64 end_timestamp = 3;</code>
+   * @return The endTimestamp.
+   */
+  long getEndTimestamp();
+}

src/main/java/bdledger/api/grpc/query/GetTransactionByBlockHashAndIndexRequest.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest}
+ * Protobuf type {@code bdledger.api.GetTransactionByBlockHashAndIndexRequest}
  */
 public  final class GetTransactionByBlockHashAndIndexRequest extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetTransactionByBlockHashAndIndexRequest)
     GetTransactionByBlockHashAndIndexRequestOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use GetTransactionByBlockHashAndIndexRequest.newBuilder() to construct.
@@ -20,6 +20,13 @@ private static final long serialVersionUID = 0L;
     blockHash_ = com.google.protobuf.ByteString.EMPTY;
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetTransactionByBlockHashAndIndexRequest();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -33,7 +40,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -81,21 +87,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.class, bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.Builder.class);
+            bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.class, bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.Builder.class);
   }
 
   public static final int LEDGER_FIELD_NUMBER = 1;
   private volatile java.lang.Object ledger_;
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   public java.lang.String getLedger() {
     java.lang.Object ref = ledger_;
@@ -111,6 +118,7 @@ private static final long serialVersionUID = 0L;
   }
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   public com.google.protobuf.ByteString
       getLedgerBytes() {
@@ -130,6 +138,7 @@ private static final long serialVersionUID = 0L;
   private com.google.protobuf.ByteString blockHash_;
   /**
    * <code>bytes block_hash = 2;</code>
+   * @return The blockHash.
    */
   public com.google.protobuf.ByteString getBlockHash() {
     return blockHash_;
@@ -139,6 +148,7 @@ private static final long serialVersionUID = 0L;
   private int index_;
   /**
    * <code>uint32 index = 3;</code>
+   * @return The index.
    */
   public int getIndex() {
     return index_;
@@ -197,10 +207,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest other = (bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest) obj;
+    bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest other = (bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest) obj;
 
     if (!getLedger()
         .equals(other.getLedger())) return false;
@@ -230,69 +240,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -305,7 +315,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -321,26 +331,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest}
+   * Protobuf type {@code bdledger.api.GetTransactionByBlockHashAndIndexRequest}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetTransactionByBlockHashAndIndexRequest)
-      bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequestOrBuilder {
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequestOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.class, bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.Builder.class);
+              bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.class, bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.newBuilder()
+    // Construct using bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -370,17 +380,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByBlockHashAndIndexRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest getDefaultInstanceForType() {
-      return bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.getDefaultInstance();
+      return bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest build() {
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest build() {
-      bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest result = buildPartial();
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -388,8 +398,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest buildPartial() {
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest buildPartial() {
-      bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest result = new bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest(this);
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest result = new bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest(this);
       result.ledger_ = ledger_;
       result.blockHash_ = blockHash_;
       result.index_ = index_;
@@ -431,16 +441,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest) {
+      if (other instanceof bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest) {
-        return mergeFrom((bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest)other);
+        return mergeFrom((bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest other) {
-      if (other == bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.getDefaultInstance()) return this;
       if (!other.getLedger().isEmpty()) {
         ledger_ = other.ledger_;
         onChanged();
@@ -466,11 +476,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest parsedMessage = null;
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -483,6 +493,7 @@ private static final long serialVersionUID = 0L;
     private java.lang.Object ledger_ = "";
     /**
      * <code>string ledger = 1;</code>
+     * @return The ledger.
      */
     public java.lang.String getLedger() {
       java.lang.Object ref = ledger_;
@@ -498,6 +509,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return The bytes for ledger.
      */
     public com.google.protobuf.ByteString
         getLedgerBytes() {
@@ -514,6 +526,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedger(
         java.lang.String value) {
@@ -527,6 +541,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearLedger() {
       
@@ -536,6 +551,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The bytes for ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedgerBytes(
         com.google.protobuf.ByteString value) {
@@ -552,12 +569,15 @@ private static final long serialVersionUID = 0L;
     private com.google.protobuf.ByteString blockHash_ = com.google.protobuf.ByteString.EMPTY;
     /**
      * <code>bytes block_hash = 2;</code>
+     * @return The blockHash.
      */
     public com.google.protobuf.ByteString getBlockHash() {
       return blockHash_;
     }
     /**
      * <code>bytes block_hash = 2;</code>
+     * @param value The blockHash to set.
+     * @return This builder for chaining.
      */
     public Builder setBlockHash(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -570,6 +590,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>bytes block_hash = 2;</code>
+     * @return This builder for chaining.
      */
     public Builder clearBlockHash() {
       
@@ -581,12 +602,15 @@ private static final long serialVersionUID = 0L;
     private int index_ ;
     /**
      * <code>uint32 index = 3;</code>
+     * @return The index.
      */
     public int getIndex() {
       return index_;
     }
     /**
      * <code>uint32 index = 3;</code>
+     * @param value The index to set.
+     * @return This builder for chaining.
      */
     public Builder setIndex(int value) {
       
@@ -596,6 +620,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>uint32 index = 3;</code>
+     * @return This builder for chaining.
      */
     public Builder clearIndex() {
       
@@ -616,16 +641,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetTransactionByBlockHashAndIndexRequest)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetTransactionByBlockHashAndIndexRequest)
-  private static final bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest();
   }
 
-  public static bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest getDefaultInstance() {
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -650,7 +675,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.acchain.GetTransactionByBlockHashAndIndexRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/GetTransactionByBlockHashAndIndexRequestOrBuilder.java

@@ -1,29 +1,33 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 public interface GetTransactionByBlockHashAndIndexRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.GetTransactionByBlockHashAndIndexRequest)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetTransactionByBlockHashAndIndexRequest)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   java.lang.String getLedger();
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   com.google.protobuf.ByteString
       getLedgerBytes();
 
   /**
    * <code>bytes block_hash = 2;</code>
+   * @return The blockHash.
    */
   com.google.protobuf.ByteString getBlockHash();
 
   /**
    * <code>uint32 index = 3;</code>
+   * @return The index.
    */
   int getIndex();
 }

src/main/java/bdledger/api/grpc/query/GetTransactionByBlockHashAndIndexResponse.java

@@ -0,0 +1,604 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+/**
+ * Protobuf type {@code bdledger.api.GetTransactionByBlockHashAndIndexResponse}
+ */
+public  final class GetTransactionByBlockHashAndIndexResponse extends
+    com.google.protobuf.GeneratedMessageV3 implements
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetTransactionByBlockHashAndIndexResponse)
+    GetTransactionByBlockHashAndIndexResponseOrBuilder {
+private static final long serialVersionUID = 0L;
+  // Use GetTransactionByBlockHashAndIndexResponse.newBuilder() to construct.
+  private GetTransactionByBlockHashAndIndexResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+  private GetTransactionByBlockHashAndIndexResponse() {
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetTransactionByBlockHashAndIndexResponse();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet
+  getUnknownFields() {
+    return this.unknownFields;
+  }
+  private GetTransactionByBlockHashAndIndexResponse(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10: {
+            bdledger.api.grpc.common.Transaction.Builder subBuilder = null;
+            if (transaction_ != null) {
+              subBuilder = transaction_.toBuilder();
+            }
+            transaction_ = input.readMessage(bdledger.api.grpc.common.Transaction.parser(), extensionRegistry);
+            if (subBuilder != null) {
+              subBuilder.mergeFrom(transaction_);
+              transaction_ = subBuilder.buildPartial();
+            }
+
+            break;
+          }
+          default: {
+            if (!parseUnknownField(
+                input, unknownFields, extensionRegistry, tag)) {
+              done = true;
+            }
+            break;
+          }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(
+          e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+  public static final com.google.protobuf.Descriptors.Descriptor
+      getDescriptor() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.class, bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.Builder.class);
+  }
+
+  public static final int TRANSACTION_FIELD_NUMBER = 1;
+  private bdledger.api.grpc.common.Transaction transaction_;
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return Whether the transaction field is set.
+   */
+  public boolean hasTransaction() {
+    return transaction_ != null;
+  }
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return The transaction.
+   */
+  public bdledger.api.grpc.common.Transaction getTransaction() {
+    return transaction_ == null ? bdledger.api.grpc.common.Transaction.getDefaultInstance() : transaction_;
+  }
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   */
+  public bdledger.api.grpc.common.TransactionOrBuilder getTransactionOrBuilder() {
+    return getTransaction();
+  }
+
+  private byte memoizedIsInitialized = -1;
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output)
+                      throws java.io.IOException {
+    if (transaction_ != null) {
+      output.writeMessage(1, getTransaction());
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (transaction_ != null) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeMessageSize(1, getTransaction());
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+     return true;
+    }
+    if (!(obj instanceof bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse)) {
+      return super.equals(obj);
+    }
+    bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse other = (bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse) obj;
+
+    if (hasTransaction() != other.hasTransaction()) return false;
+    if (hasTransaction()) {
+      if (!getTransaction()
+          .equals(other.getTransaction())) return false;
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    if (hasTransaction()) {
+      hash = (37 * hash) + TRANSACTION_FIELD_NUMBER;
+      hash = (53 * hash) + getTransaction().hashCode();
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      java.nio.ByteBuffer data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      java.nio.ByteBuffer data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      byte[] data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseDelimitedFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseDelimitedFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      com.google.protobuf.CodedInputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() { return newBuilder(); }
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+  public static Builder newBuilder(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE
+        ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(
+      com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   * Protobuf type {@code bdledger.api.GetTransactionByBlockHashAndIndexResponse}
+   */
+  public static final class Builder extends
+      com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetTransactionByBlockHashAndIndexResponse)
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponseOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.class, bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.Builder.class);
+    }
+
+    // Construct using bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3
+              .alwaysUseFieldBuilders) {
+      }
+    }
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      if (transactionBuilder_ == null) {
+        transaction_ = null;
+      } else {
+        transaction_ = null;
+        transactionBuilder_ = null;
+      }
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor
+        getDescriptorForType() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_descriptor;
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse getDefaultInstanceForType() {
+      return bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse build() {
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse buildPartial() {
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse result = new bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse(this);
+      if (transactionBuilder_ == null) {
+        result.transaction_ = transaction_;
+      } else {
+        result.transaction_ = transactionBuilder_.build();
+      }
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        java.lang.Object value) {
+      return super.setField(field, value);
+    }
+    @java.lang.Override
+    public Builder clearField(
+        com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+    @java.lang.Override
+    public Builder clearOneof(
+        com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse) {
+        return mergeFrom((bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse)other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse other) {
+      if (other == bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.getDefaultInstance()) return this;
+      if (other.hasTransaction()) {
+        mergeTransaction(other.getTransaction());
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage = (bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private bdledger.api.grpc.common.Transaction transaction_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+        bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder> transactionBuilder_;
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     * @return Whether the transaction field is set.
+     */
+    public boolean hasTransaction() {
+      return transactionBuilder_ != null || transaction_ != null;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     * @return The transaction.
+     */
+    public bdledger.api.grpc.common.Transaction getTransaction() {
+      if (transactionBuilder_ == null) {
+        return transaction_ == null ? bdledger.api.grpc.common.Transaction.getDefaultInstance() : transaction_;
+      } else {
+        return transactionBuilder_.getMessage();
+      }
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder setTransaction(bdledger.api.grpc.common.Transaction value) {
+      if (transactionBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        transaction_ = value;
+        onChanged();
+      } else {
+        transactionBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder setTransaction(
+        bdledger.api.grpc.common.Transaction.Builder builderForValue) {
+      if (transactionBuilder_ == null) {
+        transaction_ = builderForValue.build();
+        onChanged();
+      } else {
+        transactionBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder mergeTransaction(bdledger.api.grpc.common.Transaction value) {
+      if (transactionBuilder_ == null) {
+        if (transaction_ != null) {
+          transaction_ =
+            bdledger.api.grpc.common.Transaction.newBuilder(transaction_).mergeFrom(value).buildPartial();
+        } else {
+          transaction_ = value;
+        }
+        onChanged();
+      } else {
+        transactionBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder clearTransaction() {
+      if (transactionBuilder_ == null) {
+        transaction_ = null;
+        onChanged();
+      } else {
+        transaction_ = null;
+        transactionBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public bdledger.api.grpc.common.Transaction.Builder getTransactionBuilder() {
+      
+      onChanged();
+      return getTransactionFieldBuilder().getBuilder();
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public bdledger.api.grpc.common.TransactionOrBuilder getTransactionOrBuilder() {
+      if (transactionBuilder_ != null) {
+        return transactionBuilder_.getMessageOrBuilder();
+      } else {
+        return transaction_ == null ?
+            bdledger.api.grpc.common.Transaction.getDefaultInstance() : transaction_;
+      }
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+        bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder> 
+        getTransactionFieldBuilder() {
+      if (transactionBuilder_ == null) {
+        transactionBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+            bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder>(
+                getTransaction(),
+                getParentForChildren(),
+                isClean());
+        transaction_ = null;
+      }
+      return transactionBuilder_;
+    }
+    @java.lang.Override
+    public final Builder setUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetTransactionByBlockHashAndIndexResponse)
+  }
+
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetTransactionByBlockHashAndIndexResponse)
+  private static final bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse DEFAULT_INSTANCE;
+  static {
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse();
+  }
+
+  public static bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<GetTransactionByBlockHashAndIndexResponse>
+      PARSER = new com.google.protobuf.AbstractParser<GetTransactionByBlockHashAndIndexResponse>() {
+    @java.lang.Override
+    public GetTransactionByBlockHashAndIndexResponse parsePartialFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return new GetTransactionByBlockHashAndIndexResponse(input, extensionRegistry);
+    }
+  };
+
+  public static com.google.protobuf.Parser<GetTransactionByBlockHashAndIndexResponse> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<GetTransactionByBlockHashAndIndexResponse> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+
+}
+

src/main/java/bdledger/api/grpc/query/GetTransactionByBlockHashAndIndexResponseOrBuilder.java

@@ -0,0 +1,24 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface GetTransactionByBlockHashAndIndexResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetTransactionByBlockHashAndIndexResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return Whether the transaction field is set.
+   */
+  boolean hasTransaction();
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return The transaction.
+   */
+  bdledger.api.grpc.common.Transaction getTransaction();
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   */
+  bdledger.api.grpc.common.TransactionOrBuilder getTransactionOrBuilder();
+}

src/main/java/bdledger/api/grpc/query/GetTransactionByHashRequest.java

@@ -1,14 +1,14 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.acchain.GetTransactionByHashRequest}
+ * Protobuf type {@code bdledger.api.GetTransactionByHashRequest}
  */
 public  final class GetTransactionByHashRequest extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.acchain.GetTransactionByHashRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetTransactionByHashRequest)
     GetTransactionByHashRequestOrBuilder {
 private static final long serialVersionUID = 0L;
   // Use GetTransactionByHashRequest.newBuilder() to construct.
@@ -20,6 +20,13 @@ private static final long serialVersionUID = 0L;
     hash_ = com.google.protobuf.ByteString.EMPTY;
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetTransactionByHashRequest();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {
@@ -33,7 +40,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -76,21 +82,22 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByHashRequest_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashRequest_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByHashRequest_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashRequest_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.acchain.GetTransactionByHashRequest.class, bdchain.api.grpc.acchain.GetTransactionByHashRequest.Builder.class);
+            bdledger.api.grpc.query.GetTransactionByHashRequest.class, bdledger.api.grpc.query.GetTransactionByHashRequest.Builder.class);
   }
 
   public static final int LEDGER_FIELD_NUMBER = 1;
   private volatile java.lang.Object ledger_;
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   public java.lang.String getLedger() {
     java.lang.Object ref = ledger_;
@@ -106,6 +113,7 @@ private static final long serialVersionUID = 0L;
   }
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   public com.google.protobuf.ByteString
       getLedgerBytes() {
@@ -125,6 +133,7 @@ private static final long serialVersionUID = 0L;
   private com.google.protobuf.ByteString hash_;
   /**
    * <code>bytes hash = 2;</code>
+   * @return The hash.
    */
   public com.google.protobuf.ByteString getHash() {
     return hash_;
@@ -176,10 +185,10 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.acchain.GetTransactionByHashRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.query.GetTransactionByHashRequest)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.acchain.GetTransactionByHashRequest other = (bdchain.api.grpc.acchain.GetTransactionByHashRequest) obj;
+    bdledger.api.grpc.query.GetTransactionByHashRequest other = (bdledger.api.grpc.query.GetTransactionByHashRequest) obj;
 
     if (!getLedger()
         .equals(other.getLedger())) return false;
@@ -205,69 +214,69 @@ private static final long serialVersionUID = 0L;
     return hash;
   }
 
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest parseFrom(
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -280,7 +289,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.acchain.GetTransactionByHashRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.GetTransactionByHashRequest prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -296,26 +305,26 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.acchain.GetTransactionByHashRequest}
+   * Protobuf type {@code bdledger.api.GetTransactionByHashRequest}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.acchain.GetTransactionByHashRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetTransactionByHashRequest)
-      bdchain.api.grpc.acchain.GetTransactionByHashRequestOrBuilder {
+      bdledger.api.grpc.query.GetTransactionByHashRequestOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByHashRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashRequest_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByHashRequest_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashRequest_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.acchain.GetTransactionByHashRequest.class, bdchain.api.grpc.acchain.GetTransactionByHashRequest.Builder.class);
+              bdledger.api.grpc.query.GetTransactionByHashRequest.class, bdledger.api.grpc.query.GetTransactionByHashRequest.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.acchain.GetTransactionByHashRequest.newBuilder()
+    // Construct using bdledger.api.grpc.query.GetTransactionByHashRequest.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -343,17 +352,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetTransactionByHashRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashRequest_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetTransactionByHashRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.GetTransactionByHashRequest getDefaultInstanceForType() {
-      return bdchain.api.grpc.acchain.GetTransactionByHashRequest.getDefaultInstance();
+      return bdledger.api.grpc.query.GetTransactionByHashRequest.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetTransactionByHashRequest build() {
+    public bdledger.api.grpc.query.GetTransactionByHashRequest build() {
-      bdchain.api.grpc.acchain.GetTransactionByHashRequest result = buildPartial();
+      bdledger.api.grpc.query.GetTransactionByHashRequest result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -361,8 +370,8 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetTransactionByHashRequest buildPartial() {
+    public bdledger.api.grpc.query.GetTransactionByHashRequest buildPartial() {
-      bdchain.api.grpc.acchain.GetTransactionByHashRequest result = new bdchain.api.grpc.acchain.GetTransactionByHashRequest(this);
+      bdledger.api.grpc.query.GetTransactionByHashRequest result = new bdledger.api.grpc.query.GetTransactionByHashRequest(this);
       result.ledger_ = ledger_;
       result.hash_ = hash_;
       onBuilt();
@@ -403,16 +412,16 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.acchain.GetTransactionByHashRequest) {
+      if (other instanceof bdledger.api.grpc.query.GetTransactionByHashRequest) {
-        return mergeFrom((bdchain.api.grpc.acchain.GetTransactionByHashRequest)other);
+        return mergeFrom((bdledger.api.grpc.query.GetTransactionByHashRequest)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.acchain.GetTransactionByHashRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.GetTransactionByHashRequest other) {
-      if (other == bdchain.api.grpc.acchain.GetTransactionByHashRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.GetTransactionByHashRequest.getDefaultInstance()) return this;
       if (!other.getLedger().isEmpty()) {
         ledger_ = other.ledger_;
         onChanged();
@@ -435,11 +444,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.acchain.GetTransactionByHashRequest parsedMessage = null;
+      bdledger.api.grpc.query.GetTransactionByHashRequest parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.acchain.GetTransactionByHashRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.GetTransactionByHashRequest) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -452,6 +461,7 @@ private static final long serialVersionUID = 0L;
     private java.lang.Object ledger_ = "";
     /**
      * <code>string ledger = 1;</code>
+     * @return The ledger.
      */
     public java.lang.String getLedger() {
       java.lang.Object ref = ledger_;
@@ -467,6 +477,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return The bytes for ledger.
      */
     public com.google.protobuf.ByteString
         getLedgerBytes() {
@@ -483,6 +494,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedger(
         java.lang.String value) {
@@ -496,6 +509,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @return This builder for chaining.
      */
     public Builder clearLedger() {
       
@@ -505,6 +519,8 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>string ledger = 1;</code>
+     * @param value The bytes for ledger to set.
+     * @return This builder for chaining.
      */
     public Builder setLedgerBytes(
         com.google.protobuf.ByteString value) {
@@ -521,12 +537,15 @@ private static final long serialVersionUID = 0L;
     private com.google.protobuf.ByteString hash_ = com.google.protobuf.ByteString.EMPTY;
     /**
      * <code>bytes hash = 2;</code>
+     * @return The hash.
      */
     public com.google.protobuf.ByteString getHash() {
       return hash_;
     }
     /**
      * <code>bytes hash = 2;</code>
+     * @param value The hash to set.
+     * @return This builder for chaining.
      */
     public Builder setHash(com.google.protobuf.ByteString value) {
       if (value == null) {
@@ -539,6 +558,7 @@ private static final long serialVersionUID = 0L;
     }
     /**
      * <code>bytes hash = 2;</code>
+     * @return This builder for chaining.
      */
     public Builder clearHash() {
       
@@ -559,16 +579,16 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.acchain.GetTransactionByHashRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetTransactionByHashRequest)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.GetTransactionByHashRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetTransactionByHashRequest)
-  private static final bdchain.api.grpc.acchain.GetTransactionByHashRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.GetTransactionByHashRequest DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.GetTransactionByHashRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetTransactionByHashRequest();
   }
 
-  public static bdchain.api.grpc.acchain.GetTransactionByHashRequest getDefaultInstance() {
+  public static bdledger.api.grpc.query.GetTransactionByHashRequest getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
@@ -593,7 +613,7 @@ private static final long serialVersionUID = 0L;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.acchain.GetTransactionByHashRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.GetTransactionByHashRequest getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/GetTransactionByHashRequestOrBuilder.java

@@ -1,24 +1,27 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 public interface GetTransactionByHashRequestOrBuilder extends
-    // @@protoc_insertion_point(interface_extends:bdchain.api.acchain.GetTransactionByHashRequest)
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetTransactionByHashRequest)
     com.google.protobuf.MessageOrBuilder {
 
   /**
    * <code>string ledger = 1;</code>
+   * @return The ledger.
    */
   java.lang.String getLedger();
   /**
    * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
    */
   com.google.protobuf.ByteString
       getLedgerBytes();
 
   /**
    * <code>bytes hash = 2;</code>
+   * @return The hash.
    */
   com.google.protobuf.ByteString getHash();
 }

src/main/java/bdledger/api/grpc/query/GetTransactionByHashResponse.java

@@ -0,0 +1,604 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+/**
+ * Protobuf type {@code bdledger.api.GetTransactionByHashResponse}
+ */
+public  final class GetTransactionByHashResponse extends
+    com.google.protobuf.GeneratedMessageV3 implements
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetTransactionByHashResponse)
+    GetTransactionByHashResponseOrBuilder {
+private static final long serialVersionUID = 0L;
+  // Use GetTransactionByHashResponse.newBuilder() to construct.
+  private GetTransactionByHashResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+  private GetTransactionByHashResponse() {
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetTransactionByHashResponse();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet
+  getUnknownFields() {
+    return this.unknownFields;
+  }
+  private GetTransactionByHashResponse(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10: {
+            bdledger.api.grpc.common.Transaction.Builder subBuilder = null;
+            if (transaction_ != null) {
+              subBuilder = transaction_.toBuilder();
+            }
+            transaction_ = input.readMessage(bdledger.api.grpc.common.Transaction.parser(), extensionRegistry);
+            if (subBuilder != null) {
+              subBuilder.mergeFrom(transaction_);
+              transaction_ = subBuilder.buildPartial();
+            }
+
+            break;
+          }
+          default: {
+            if (!parseUnknownField(
+                input, unknownFields, extensionRegistry, tag)) {
+              done = true;
+            }
+            break;
+          }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(
+          e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+  public static final com.google.protobuf.Descriptors.Descriptor
+      getDescriptor() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashResponse_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashResponse_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            bdledger.api.grpc.query.GetTransactionByHashResponse.class, bdledger.api.grpc.query.GetTransactionByHashResponse.Builder.class);
+  }
+
+  public static final int TRANSACTION_FIELD_NUMBER = 1;
+  private bdledger.api.grpc.common.Transaction transaction_;
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return Whether the transaction field is set.
+   */
+  public boolean hasTransaction() {
+    return transaction_ != null;
+  }
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return The transaction.
+   */
+  public bdledger.api.grpc.common.Transaction getTransaction() {
+    return transaction_ == null ? bdledger.api.grpc.common.Transaction.getDefaultInstance() : transaction_;
+  }
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   */
+  public bdledger.api.grpc.common.TransactionOrBuilder getTransactionOrBuilder() {
+    return getTransaction();
+  }
+
+  private byte memoizedIsInitialized = -1;
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output)
+                      throws java.io.IOException {
+    if (transaction_ != null) {
+      output.writeMessage(1, getTransaction());
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (transaction_ != null) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeMessageSize(1, getTransaction());
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+     return true;
+    }
+    if (!(obj instanceof bdledger.api.grpc.query.GetTransactionByHashResponse)) {
+      return super.equals(obj);
+    }
+    bdledger.api.grpc.query.GetTransactionByHashResponse other = (bdledger.api.grpc.query.GetTransactionByHashResponse) obj;
+
+    if (hasTransaction() != other.hasTransaction()) return false;
+    if (hasTransaction()) {
+      if (!getTransaction()
+          .equals(other.getTransaction())) return false;
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    if (hasTransaction()) {
+      hash = (37 * hash) + TRANSACTION_FIELD_NUMBER;
+      hash = (53 * hash) + getTransaction().hashCode();
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      java.nio.ByteBuffer data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      java.nio.ByteBuffer data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      byte[] data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseDelimitedFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseDelimitedFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      com.google.protobuf.CodedInputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() { return newBuilder(); }
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+  public static Builder newBuilder(bdledger.api.grpc.query.GetTransactionByHashResponse prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE
+        ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(
+      com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   * Protobuf type {@code bdledger.api.GetTransactionByHashResponse}
+   */
+  public static final class Builder extends
+      com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetTransactionByHashResponse)
+      bdledger.api.grpc.query.GetTransactionByHashResponseOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashResponse_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              bdledger.api.grpc.query.GetTransactionByHashResponse.class, bdledger.api.grpc.query.GetTransactionByHashResponse.Builder.class);
+    }
+
+    // Construct using bdledger.api.grpc.query.GetTransactionByHashResponse.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3
+              .alwaysUseFieldBuilders) {
+      }
+    }
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      if (transactionBuilder_ == null) {
+        transaction_ = null;
+      } else {
+        transaction_ = null;
+        transactionBuilder_ = null;
+      }
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor
+        getDescriptorForType() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionByHashResponse_descriptor;
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionByHashResponse getDefaultInstanceForType() {
+      return bdledger.api.grpc.query.GetTransactionByHashResponse.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionByHashResponse build() {
+      bdledger.api.grpc.query.GetTransactionByHashResponse result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionByHashResponse buildPartial() {
+      bdledger.api.grpc.query.GetTransactionByHashResponse result = new bdledger.api.grpc.query.GetTransactionByHashResponse(this);
+      if (transactionBuilder_ == null) {
+        result.transaction_ = transaction_;
+      } else {
+        result.transaction_ = transactionBuilder_.build();
+      }
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        java.lang.Object value) {
+      return super.setField(field, value);
+    }
+    @java.lang.Override
+    public Builder clearField(
+        com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+    @java.lang.Override
+    public Builder clearOneof(
+        com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof bdledger.api.grpc.query.GetTransactionByHashResponse) {
+        return mergeFrom((bdledger.api.grpc.query.GetTransactionByHashResponse)other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(bdledger.api.grpc.query.GetTransactionByHashResponse other) {
+      if (other == bdledger.api.grpc.query.GetTransactionByHashResponse.getDefaultInstance()) return this;
+      if (other.hasTransaction()) {
+        mergeTransaction(other.getTransaction());
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      bdledger.api.grpc.query.GetTransactionByHashResponse parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage = (bdledger.api.grpc.query.GetTransactionByHashResponse) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private bdledger.api.grpc.common.Transaction transaction_;
+    private com.google.protobuf.SingleFieldBuilderV3<
+        bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder> transactionBuilder_;
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     * @return Whether the transaction field is set.
+     */
+    public boolean hasTransaction() {
+      return transactionBuilder_ != null || transaction_ != null;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     * @return The transaction.
+     */
+    public bdledger.api.grpc.common.Transaction getTransaction() {
+      if (transactionBuilder_ == null) {
+        return transaction_ == null ? bdledger.api.grpc.common.Transaction.getDefaultInstance() : transaction_;
+      } else {
+        return transactionBuilder_.getMessage();
+      }
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder setTransaction(bdledger.api.grpc.common.Transaction value) {
+      if (transactionBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        transaction_ = value;
+        onChanged();
+      } else {
+        transactionBuilder_.setMessage(value);
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder setTransaction(
+        bdledger.api.grpc.common.Transaction.Builder builderForValue) {
+      if (transactionBuilder_ == null) {
+        transaction_ = builderForValue.build();
+        onChanged();
+      } else {
+        transactionBuilder_.setMessage(builderForValue.build());
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder mergeTransaction(bdledger.api.grpc.common.Transaction value) {
+      if (transactionBuilder_ == null) {
+        if (transaction_ != null) {
+          transaction_ =
+            bdledger.api.grpc.common.Transaction.newBuilder(transaction_).mergeFrom(value).buildPartial();
+        } else {
+          transaction_ = value;
+        }
+        onChanged();
+      } else {
+        transactionBuilder_.mergeFrom(value);
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public Builder clearTransaction() {
+      if (transactionBuilder_ == null) {
+        transaction_ = null;
+        onChanged();
+      } else {
+        transaction_ = null;
+        transactionBuilder_ = null;
+      }
+
+      return this;
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public bdledger.api.grpc.common.Transaction.Builder getTransactionBuilder() {
+      
+      onChanged();
+      return getTransactionFieldBuilder().getBuilder();
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    public bdledger.api.grpc.common.TransactionOrBuilder getTransactionOrBuilder() {
+      if (transactionBuilder_ != null) {
+        return transactionBuilder_.getMessageOrBuilder();
+      } else {
+        return transaction_ == null ?
+            bdledger.api.grpc.common.Transaction.getDefaultInstance() : transaction_;
+      }
+    }
+    /**
+     * <code>.bdledger.api.Transaction transaction = 1;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+        bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder> 
+        getTransactionFieldBuilder() {
+      if (transactionBuilder_ == null) {
+        transactionBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+            bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder>(
+                getTransaction(),
+                getParentForChildren(),
+                isClean());
+        transaction_ = null;
+      }
+      return transactionBuilder_;
+    }
+    @java.lang.Override
+    public final Builder setUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetTransactionByHashResponse)
+  }
+
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetTransactionByHashResponse)
+  private static final bdledger.api.grpc.query.GetTransactionByHashResponse DEFAULT_INSTANCE;
+  static {
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetTransactionByHashResponse();
+  }
+
+  public static bdledger.api.grpc.query.GetTransactionByHashResponse getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<GetTransactionByHashResponse>
+      PARSER = new com.google.protobuf.AbstractParser<GetTransactionByHashResponse>() {
+    @java.lang.Override
+    public GetTransactionByHashResponse parsePartialFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return new GetTransactionByHashResponse(input, extensionRegistry);
+    }
+  };
+
+  public static com.google.protobuf.Parser<GetTransactionByHashResponse> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<GetTransactionByHashResponse> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public bdledger.api.grpc.query.GetTransactionByHashResponse getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+
+}
+

src/main/java/bdledger/api/grpc/query/GetTransactionByHashResponseOrBuilder.java

@@ -0,0 +1,24 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface GetTransactionByHashResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetTransactionByHashResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return Whether the transaction field is set.
+   */
+  boolean hasTransaction();
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   * @return The transaction.
+   */
+  bdledger.api.grpc.common.Transaction getTransaction();
+  /**
+   * <code>.bdledger.api.Transaction transaction = 1;</code>
+   */
+  bdledger.api.grpc.common.TransactionOrBuilder getTransactionOrBuilder();
+}

src/main/java/bdledger/api/grpc/query/GetTransactionsResponse.java

@@ -0,0 +1,891 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+/**
+ * Protobuf type {@code bdledger.api.GetTransactionsResponse}
+ */
+public  final class GetTransactionsResponse extends
+    com.google.protobuf.GeneratedMessageV3 implements
+    // @@protoc_insertion_point(message_implements:bdledger.api.GetTransactionsResponse)
+    GetTransactionsResponseOrBuilder {
+private static final long serialVersionUID = 0L;
+  // Use GetTransactionsResponse.newBuilder() to construct.
+  private GetTransactionsResponse(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+  private GetTransactionsResponse() {
+    transactions_ = java.util.Collections.emptyList();
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new GetTransactionsResponse();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet
+  getUnknownFields() {
+    return this.unknownFields;
+  }
+  private GetTransactionsResponse(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    int mutable_bitField0_ = 0;
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10: {
+            if (!((mutable_bitField0_ & 0x00000001) != 0)) {
+              transactions_ = new java.util.ArrayList<bdledger.api.grpc.common.Transaction>();
+              mutable_bitField0_ |= 0x00000001;
+            }
+            transactions_.add(
+                input.readMessage(bdledger.api.grpc.common.Transaction.parser(), extensionRegistry));
+            break;
+          }
+          case 16: {
+
+            startTimestamp_ = input.readInt64();
+            break;
+          }
+          case 24: {
+
+            endTimestamp_ = input.readInt64();
+            break;
+          }
+          default: {
+            if (!parseUnknownField(
+                input, unknownFields, extensionRegistry, tag)) {
+              done = true;
+            }
+            break;
+          }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(
+          e).setUnfinishedMessage(this);
+    } finally {
+      if (((mutable_bitField0_ & 0x00000001) != 0)) {
+        transactions_ = java.util.Collections.unmodifiableList(transactions_);
+      }
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+  public static final com.google.protobuf.Descriptors.Descriptor
+      getDescriptor() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionsResponse_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionsResponse_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            bdledger.api.grpc.query.GetTransactionsResponse.class, bdledger.api.grpc.query.GetTransactionsResponse.Builder.class);
+  }
+
+  public static final int TRANSACTIONS_FIELD_NUMBER = 1;
+  private java.util.List<bdledger.api.grpc.common.Transaction> transactions_;
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  public java.util.List<bdledger.api.grpc.common.Transaction> getTransactionsList() {
+    return transactions_;
+  }
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  public java.util.List<? extends bdledger.api.grpc.common.TransactionOrBuilder> 
+      getTransactionsOrBuilderList() {
+    return transactions_;
+  }
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  public int getTransactionsCount() {
+    return transactions_.size();
+  }
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  public bdledger.api.grpc.common.Transaction getTransactions(int index) {
+    return transactions_.get(index);
+  }
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  public bdledger.api.grpc.common.TransactionOrBuilder getTransactionsOrBuilder(
+      int index) {
+    return transactions_.get(index);
+  }
+
+  public static final int START_TIMESTAMP_FIELD_NUMBER = 2;
+  private long startTimestamp_;
+  /**
+   * <code>int64 start_timestamp = 2;</code>
+   * @return The startTimestamp.
+   */
+  public long getStartTimestamp() {
+    return startTimestamp_;
+  }
+
+  public static final int END_TIMESTAMP_FIELD_NUMBER = 3;
+  private long endTimestamp_;
+  /**
+   * <code>int64 end_timestamp = 3;</code>
+   * @return The endTimestamp.
+   */
+  public long getEndTimestamp() {
+    return endTimestamp_;
+  }
+
+  private byte memoizedIsInitialized = -1;
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output)
+                      throws java.io.IOException {
+    for (int i = 0; i < transactions_.size(); i++) {
+      output.writeMessage(1, transactions_.get(i));
+    }
+    if (startTimestamp_ != 0L) {
+      output.writeInt64(2, startTimestamp_);
+    }
+    if (endTimestamp_ != 0L) {
+      output.writeInt64(3, endTimestamp_);
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    for (int i = 0; i < transactions_.size(); i++) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeMessageSize(1, transactions_.get(i));
+    }
+    if (startTimestamp_ != 0L) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeInt64Size(2, startTimestamp_);
+    }
+    if (endTimestamp_ != 0L) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeInt64Size(3, endTimestamp_);
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+     return true;
+    }
+    if (!(obj instanceof bdledger.api.grpc.query.GetTransactionsResponse)) {
+      return super.equals(obj);
+    }
+    bdledger.api.grpc.query.GetTransactionsResponse other = (bdledger.api.grpc.query.GetTransactionsResponse) obj;
+
+    if (!getTransactionsList()
+        .equals(other.getTransactionsList())) return false;
+    if (getStartTimestamp()
+        != other.getStartTimestamp()) return false;
+    if (getEndTimestamp()
+        != other.getEndTimestamp()) return false;
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    if (getTransactionsCount() > 0) {
+      hash = (37 * hash) + TRANSACTIONS_FIELD_NUMBER;
+      hash = (53 * hash) + getTransactionsList().hashCode();
+    }
+    hash = (37 * hash) + START_TIMESTAMP_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+        getStartTimestamp());
+    hash = (37 * hash) + END_TIMESTAMP_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+        getEndTimestamp());
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      java.nio.ByteBuffer data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      java.nio.ByteBuffer data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      byte[] data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseDelimitedFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseDelimitedFrom(
+      java.io.InputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      com.google.protobuf.CodedInputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input);
+  }
+  public static bdledger.api.grpc.query.GetTransactionsResponse parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3
+        .parseWithIOException(PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() { return newBuilder(); }
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+  public static Builder newBuilder(bdledger.api.grpc.query.GetTransactionsResponse prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE
+        ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(
+      com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   * Protobuf type {@code bdledger.api.GetTransactionsResponse}
+   */
+  public static final class Builder extends
+      com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+      // @@protoc_insertion_point(builder_implements:bdledger.api.GetTransactionsResponse)
+      bdledger.api.grpc.query.GetTransactionsResponseOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionsResponse_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionsResponse_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              bdledger.api.grpc.query.GetTransactionsResponse.class, bdledger.api.grpc.query.GetTransactionsResponse.Builder.class);
+    }
+
+    // Construct using bdledger.api.grpc.query.GetTransactionsResponse.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3
+              .alwaysUseFieldBuilders) {
+        getTransactionsFieldBuilder();
+      }
+    }
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      if (transactionsBuilder_ == null) {
+        transactions_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000001);
+      } else {
+        transactionsBuilder_.clear();
+      }
+      startTimestamp_ = 0L;
+
+      endTimestamp_ = 0L;
+
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor
+        getDescriptorForType() {
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_GetTransactionsResponse_descriptor;
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionsResponse getDefaultInstanceForType() {
+      return bdledger.api.grpc.query.GetTransactionsResponse.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionsResponse build() {
+      bdledger.api.grpc.query.GetTransactionsResponse result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public bdledger.api.grpc.query.GetTransactionsResponse buildPartial() {
+      bdledger.api.grpc.query.GetTransactionsResponse result = new bdledger.api.grpc.query.GetTransactionsResponse(this);
+      int from_bitField0_ = bitField0_;
+      if (transactionsBuilder_ == null) {
+        if (((bitField0_ & 0x00000001) != 0)) {
+          transactions_ = java.util.Collections.unmodifiableList(transactions_);
+          bitField0_ = (bitField0_ & ~0x00000001);
+        }
+        result.transactions_ = transactions_;
+      } else {
+        result.transactions_ = transactionsBuilder_.build();
+      }
+      result.startTimestamp_ = startTimestamp_;
+      result.endTimestamp_ = endTimestamp_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        java.lang.Object value) {
+      return super.setField(field, value);
+    }
+    @java.lang.Override
+    public Builder clearField(
+        com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+    @java.lang.Override
+    public Builder clearOneof(
+        com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field,
+        java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof bdledger.api.grpc.query.GetTransactionsResponse) {
+        return mergeFrom((bdledger.api.grpc.query.GetTransactionsResponse)other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(bdledger.api.grpc.query.GetTransactionsResponse other) {
+      if (other == bdledger.api.grpc.query.GetTransactionsResponse.getDefaultInstance()) return this;
+      if (transactionsBuilder_ == null) {
+        if (!other.transactions_.isEmpty()) {
+          if (transactions_.isEmpty()) {
+            transactions_ = other.transactions_;
+            bitField0_ = (bitField0_ & ~0x00000001);
+          } else {
+            ensureTransactionsIsMutable();
+            transactions_.addAll(other.transactions_);
+          }
+          onChanged();
+        }
+      } else {
+        if (!other.transactions_.isEmpty()) {
+          if (transactionsBuilder_.isEmpty()) {
+            transactionsBuilder_.dispose();
+            transactionsBuilder_ = null;
+            transactions_ = other.transactions_;
+            bitField0_ = (bitField0_ & ~0x00000001);
+            transactionsBuilder_ = 
+              com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders ?
+                 getTransactionsFieldBuilder() : null;
+          } else {
+            transactionsBuilder_.addAllMessages(other.transactions_);
+          }
+        }
+      }
+      if (other.getStartTimestamp() != 0L) {
+        setStartTimestamp(other.getStartTimestamp());
+      }
+      if (other.getEndTimestamp() != 0L) {
+        setEndTimestamp(other.getEndTimestamp());
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      bdledger.api.grpc.query.GetTransactionsResponse parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage = (bdledger.api.grpc.query.GetTransactionsResponse) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+    private int bitField0_;
+
+    private java.util.List<bdledger.api.grpc.common.Transaction> transactions_ =
+      java.util.Collections.emptyList();
+    private void ensureTransactionsIsMutable() {
+      if (!((bitField0_ & 0x00000001) != 0)) {
+        transactions_ = new java.util.ArrayList<bdledger.api.grpc.common.Transaction>(transactions_);
+        bitField0_ |= 0x00000001;
+       }
+    }
+
+    private com.google.protobuf.RepeatedFieldBuilderV3<
+        bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder> transactionsBuilder_;
+
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public java.util.List<bdledger.api.grpc.common.Transaction> getTransactionsList() {
+      if (transactionsBuilder_ == null) {
+        return java.util.Collections.unmodifiableList(transactions_);
+      } else {
+        return transactionsBuilder_.getMessageList();
+      }
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public int getTransactionsCount() {
+      if (transactionsBuilder_ == null) {
+        return transactions_.size();
+      } else {
+        return transactionsBuilder_.getCount();
+      }
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public bdledger.api.grpc.common.Transaction getTransactions(int index) {
+      if (transactionsBuilder_ == null) {
+        return transactions_.get(index);
+      } else {
+        return transactionsBuilder_.getMessage(index);
+      }
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder setTransactions(
+        int index, bdledger.api.grpc.common.Transaction value) {
+      if (transactionsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureTransactionsIsMutable();
+        transactions_.set(index, value);
+        onChanged();
+      } else {
+        transactionsBuilder_.setMessage(index, value);
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder setTransactions(
+        int index, bdledger.api.grpc.common.Transaction.Builder builderForValue) {
+      if (transactionsBuilder_ == null) {
+        ensureTransactionsIsMutable();
+        transactions_.set(index, builderForValue.build());
+        onChanged();
+      } else {
+        transactionsBuilder_.setMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder addTransactions(bdledger.api.grpc.common.Transaction value) {
+      if (transactionsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureTransactionsIsMutable();
+        transactions_.add(value);
+        onChanged();
+      } else {
+        transactionsBuilder_.addMessage(value);
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder addTransactions(
+        int index, bdledger.api.grpc.common.Transaction value) {
+      if (transactionsBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        ensureTransactionsIsMutable();
+        transactions_.add(index, value);
+        onChanged();
+      } else {
+        transactionsBuilder_.addMessage(index, value);
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder addTransactions(
+        bdledger.api.grpc.common.Transaction.Builder builderForValue) {
+      if (transactionsBuilder_ == null) {
+        ensureTransactionsIsMutable();
+        transactions_.add(builderForValue.build());
+        onChanged();
+      } else {
+        transactionsBuilder_.addMessage(builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder addTransactions(
+        int index, bdledger.api.grpc.common.Transaction.Builder builderForValue) {
+      if (transactionsBuilder_ == null) {
+        ensureTransactionsIsMutable();
+        transactions_.add(index, builderForValue.build());
+        onChanged();
+      } else {
+        transactionsBuilder_.addMessage(index, builderForValue.build());
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder addAllTransactions(
+        java.lang.Iterable<? extends bdledger.api.grpc.common.Transaction> values) {
+      if (transactionsBuilder_ == null) {
+        ensureTransactionsIsMutable();
+        com.google.protobuf.AbstractMessageLite.Builder.addAll(
+            values, transactions_);
+        onChanged();
+      } else {
+        transactionsBuilder_.addAllMessages(values);
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder clearTransactions() {
+      if (transactionsBuilder_ == null) {
+        transactions_ = java.util.Collections.emptyList();
+        bitField0_ = (bitField0_ & ~0x00000001);
+        onChanged();
+      } else {
+        transactionsBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public Builder removeTransactions(int index) {
+      if (transactionsBuilder_ == null) {
+        ensureTransactionsIsMutable();
+        transactions_.remove(index);
+        onChanged();
+      } else {
+        transactionsBuilder_.remove(index);
+      }
+      return this;
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public bdledger.api.grpc.common.Transaction.Builder getTransactionsBuilder(
+        int index) {
+      return getTransactionsFieldBuilder().getBuilder(index);
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public bdledger.api.grpc.common.TransactionOrBuilder getTransactionsOrBuilder(
+        int index) {
+      if (transactionsBuilder_ == null) {
+        return transactions_.get(index);  } else {
+        return transactionsBuilder_.getMessageOrBuilder(index);
+      }
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public java.util.List<? extends bdledger.api.grpc.common.TransactionOrBuilder> 
+         getTransactionsOrBuilderList() {
+      if (transactionsBuilder_ != null) {
+        return transactionsBuilder_.getMessageOrBuilderList();
+      } else {
+        return java.util.Collections.unmodifiableList(transactions_);
+      }
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public bdledger.api.grpc.common.Transaction.Builder addTransactionsBuilder() {
+      return getTransactionsFieldBuilder().addBuilder(
+          bdledger.api.grpc.common.Transaction.getDefaultInstance());
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public bdledger.api.grpc.common.Transaction.Builder addTransactionsBuilder(
+        int index) {
+      return getTransactionsFieldBuilder().addBuilder(
+          index, bdledger.api.grpc.common.Transaction.getDefaultInstance());
+    }
+    /**
+     * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+     */
+    public java.util.List<bdledger.api.grpc.common.Transaction.Builder> 
+         getTransactionsBuilderList() {
+      return getTransactionsFieldBuilder().getBuilderList();
+    }
+    private com.google.protobuf.RepeatedFieldBuilderV3<
+        bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder> 
+        getTransactionsFieldBuilder() {
+      if (transactionsBuilder_ == null) {
+        transactionsBuilder_ = new com.google.protobuf.RepeatedFieldBuilderV3<
+            bdledger.api.grpc.common.Transaction, bdledger.api.grpc.common.Transaction.Builder, bdledger.api.grpc.common.TransactionOrBuilder>(
+                transactions_,
+                ((bitField0_ & 0x00000001) != 0),
+                getParentForChildren(),
+                isClean());
+        transactions_ = null;
+      }
+      return transactionsBuilder_;
+    }
+
+    private long startTimestamp_ ;
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     * @return The startTimestamp.
+     */
+    public long getStartTimestamp() {
+      return startTimestamp_;
+    }
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     * @param value The startTimestamp to set.
+     * @return This builder for chaining.
+     */
+    public Builder setStartTimestamp(long value) {
+      
+      startTimestamp_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     * <code>int64 start_timestamp = 2;</code>
+     * @return This builder for chaining.
+     */
+    public Builder clearStartTimestamp() {
+      
+      startTimestamp_ = 0L;
+      onChanged();
+      return this;
+    }
+
+    private long endTimestamp_ ;
+    /**
+     * <code>int64 end_timestamp = 3;</code>
+     * @return The endTimestamp.
+     */
+    public long getEndTimestamp() {
+      return endTimestamp_;
+    }
+    /**
+     * <code>int64 end_timestamp = 3;</code>
+     * @param value The endTimestamp to set.
+     * @return This builder for chaining.
+     */
+    public Builder setEndTimestamp(long value) {
+      
+      endTimestamp_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     * <code>int64 end_timestamp = 3;</code>
+     * @return This builder for chaining.
+     */
+    public Builder clearEndTimestamp() {
+      
+      endTimestamp_ = 0L;
+      onChanged();
+      return this;
+    }
+    @java.lang.Override
+    public final Builder setUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+
+    // @@protoc_insertion_point(builder_scope:bdledger.api.GetTransactionsResponse)
+  }
+
+  // @@protoc_insertion_point(class_scope:bdledger.api.GetTransactionsResponse)
+  private static final bdledger.api.grpc.query.GetTransactionsResponse DEFAULT_INSTANCE;
+  static {
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.GetTransactionsResponse();
+  }
+
+  public static bdledger.api.grpc.query.GetTransactionsResponse getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<GetTransactionsResponse>
+      PARSER = new com.google.protobuf.AbstractParser<GetTransactionsResponse>() {
+    @java.lang.Override
+    public GetTransactionsResponse parsePartialFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return new GetTransactionsResponse(input, extensionRegistry);
+    }
+  };
+
+  public static com.google.protobuf.Parser<GetTransactionsResponse> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<GetTransactionsResponse> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public bdledger.api.grpc.query.GetTransactionsResponse getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+
+}
+

src/main/java/bdledger/api/grpc/query/GetTransactionsResponseOrBuilder.java

@@ -0,0 +1,45 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface GetTransactionsResponseOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.GetTransactionsResponse)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  java.util.List<bdledger.api.grpc.common.Transaction> 
+      getTransactionsList();
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  bdledger.api.grpc.common.Transaction getTransactions(int index);
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  int getTransactionsCount();
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  java.util.List<? extends bdledger.api.grpc.common.TransactionOrBuilder> 
+      getTransactionsOrBuilderList();
+  /**
+   * <code>repeated .bdledger.api.Transaction transactions = 1;</code>
+   */
+  bdledger.api.grpc.common.TransactionOrBuilder getTransactionsOrBuilder(
+      int index);
+
+  /**
+   * <code>int64 start_timestamp = 2;</code>
+   * @return The startTimestamp.
+   */
+  long getStartTimestamp();
+
+  /**
+   * <code>int64 end_timestamp = 3;</code>
+   * @return The endTimestamp.
+   */
+  long getEndTimestamp();
+}

src/main/java/bdledger/api/grpc/query/QueryGrpc.java

@@ -0,0 +1,732 @@
+package bdledger.api.grpc.query;
+
+import static io.grpc.MethodDescriptor.generateFullMethodName;
+import static io.grpc.stub.ClientCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ClientCalls.asyncUnaryCall;
+import static io.grpc.stub.ClientCalls.blockingServerStreamingCall;
+import static io.grpc.stub.ClientCalls.blockingUnaryCall;
+import static io.grpc.stub.ClientCalls.futureUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncBidiStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncClientStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncServerStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnaryCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedStreamingCall;
+import static io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall;
+
+/**
+ */
+@javax.annotation.Generated(
+    value = "by gRPC proto compiler (version 1.27.0)",
+    comments = "Source: bdledger/api/query.proto")
+public final class QueryGrpc {
+
+  private QueryGrpc() {}
+
+  public static final String SERVICE_NAME = "bdledger.api.Query";
+
+  // Static method descriptors that strictly reflect the proto.
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.BlocksRequest,
+      bdledger.api.grpc.query.GetBlocksResponse> getGetBlocksMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "GetBlocks",
+      requestType = bdledger.api.grpc.query.BlocksRequest.class,
+      responseType = bdledger.api.grpc.query.GetBlocksResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.BlocksRequest,
+      bdledger.api.grpc.query.GetBlocksResponse> getGetBlocksMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.BlocksRequest, bdledger.api.grpc.query.GetBlocksResponse> getGetBlocksMethod;
+    if ((getGetBlocksMethod = QueryGrpc.getGetBlocksMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getGetBlocksMethod = QueryGrpc.getGetBlocksMethod) == null) {
+          QueryGrpc.getGetBlocksMethod = getGetBlocksMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.BlocksRequest, bdledger.api.grpc.query.GetBlocksResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "GetBlocks"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.BlocksRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetBlocksResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("GetBlocks"))
+              .build();
+        }
+      }
+    }
+    return getGetBlocksMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.BlocksRequest,
+      bdledger.api.grpc.query.CountBlocksResponse> getCountBlocksMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "CountBlocks",
+      requestType = bdledger.api.grpc.query.BlocksRequest.class,
+      responseType = bdledger.api.grpc.query.CountBlocksResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.BlocksRequest,
+      bdledger.api.grpc.query.CountBlocksResponse> getCountBlocksMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.BlocksRequest, bdledger.api.grpc.query.CountBlocksResponse> getCountBlocksMethod;
+    if ((getCountBlocksMethod = QueryGrpc.getCountBlocksMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getCountBlocksMethod = QueryGrpc.getCountBlocksMethod) == null) {
+          QueryGrpc.getCountBlocksMethod = getCountBlocksMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.BlocksRequest, bdledger.api.grpc.query.CountBlocksResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "CountBlocks"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.BlocksRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.CountBlocksResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("CountBlocks"))
+              .build();
+        }
+      }
+    }
+    return getCountBlocksMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.TransactionsRequest,
+      bdledger.api.grpc.query.GetTransactionsResponse> getGetTransactionsMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "GetTransactions",
+      requestType = bdledger.api.grpc.query.TransactionsRequest.class,
+      responseType = bdledger.api.grpc.query.GetTransactionsResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.TransactionsRequest,
+      bdledger.api.grpc.query.GetTransactionsResponse> getGetTransactionsMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.TransactionsRequest, bdledger.api.grpc.query.GetTransactionsResponse> getGetTransactionsMethod;
+    if ((getGetTransactionsMethod = QueryGrpc.getGetTransactionsMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getGetTransactionsMethod = QueryGrpc.getGetTransactionsMethod) == null) {
+          QueryGrpc.getGetTransactionsMethod = getGetTransactionsMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.TransactionsRequest, bdledger.api.grpc.query.GetTransactionsResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "GetTransactions"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.TransactionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetTransactionsResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("GetTransactions"))
+              .build();
+        }
+      }
+    }
+    return getGetTransactionsMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.TransactionsRequest,
+      bdledger.api.grpc.query.CountTransactionsResponse> getCountTransactionsMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "CountTransactions",
+      requestType = bdledger.api.grpc.query.TransactionsRequest.class,
+      responseType = bdledger.api.grpc.query.CountTransactionsResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.TransactionsRequest,
+      bdledger.api.grpc.query.CountTransactionsResponse> getCountTransactionsMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.TransactionsRequest, bdledger.api.grpc.query.CountTransactionsResponse> getCountTransactionsMethod;
+    if ((getCountTransactionsMethod = QueryGrpc.getCountTransactionsMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getCountTransactionsMethod = QueryGrpc.getCountTransactionsMethod) == null) {
+          QueryGrpc.getCountTransactionsMethod = getCountTransactionsMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.TransactionsRequest, bdledger.api.grpc.query.CountTransactionsResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "CountTransactions"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.TransactionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.CountTransactionsResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("CountTransactions"))
+              .build();
+        }
+      }
+    }
+    return getCountTransactionsMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetBlockByHashRequest,
+      bdledger.api.grpc.query.GetBlockByHashResponse> getGetBlockByHashMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "GetBlockByHash",
+      requestType = bdledger.api.grpc.query.GetBlockByHashRequest.class,
+      responseType = bdledger.api.grpc.query.GetBlockByHashResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetBlockByHashRequest,
+      bdledger.api.grpc.query.GetBlockByHashResponse> getGetBlockByHashMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetBlockByHashRequest, bdledger.api.grpc.query.GetBlockByHashResponse> getGetBlockByHashMethod;
+    if ((getGetBlockByHashMethod = QueryGrpc.getGetBlockByHashMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getGetBlockByHashMethod = QueryGrpc.getGetBlockByHashMethod) == null) {
+          QueryGrpc.getGetBlockByHashMethod = getGetBlockByHashMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.GetBlockByHashRequest, bdledger.api.grpc.query.GetBlockByHashResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "GetBlockByHash"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetBlockByHashRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetBlockByHashResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("GetBlockByHash"))
+              .build();
+        }
+      }
+    }
+    return getGetBlockByHashMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetTransactionByHashRequest,
+      bdledger.api.grpc.query.GetTransactionByHashResponse> getGetTransactionByHashMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "GetTransactionByHash",
+      requestType = bdledger.api.grpc.query.GetTransactionByHashRequest.class,
+      responseType = bdledger.api.grpc.query.GetTransactionByHashResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetTransactionByHashRequest,
+      bdledger.api.grpc.query.GetTransactionByHashResponse> getGetTransactionByHashMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetTransactionByHashRequest, bdledger.api.grpc.query.GetTransactionByHashResponse> getGetTransactionByHashMethod;
+    if ((getGetTransactionByHashMethod = QueryGrpc.getGetTransactionByHashMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getGetTransactionByHashMethod = QueryGrpc.getGetTransactionByHashMethod) == null) {
+          QueryGrpc.getGetTransactionByHashMethod = getGetTransactionByHashMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.GetTransactionByHashRequest, bdledger.api.grpc.query.GetTransactionByHashResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "GetTransactionByHash"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetTransactionByHashRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetTransactionByHashResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("GetTransactionByHash"))
+              .build();
+        }
+      }
+    }
+    return getGetTransactionByHashMethod;
+  }
+
+  private static volatile io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest,
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse> getGetTransactionByBlockHashAndIndexMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "GetTransactionByBlockHashAndIndex",
+      requestType = bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.class,
+      responseType = bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest,
+      bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse> getGetTransactionByBlockHashAndIndexMethod() {
+    io.grpc.MethodDescriptor<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest, bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse> getGetTransactionByBlockHashAndIndexMethod;
+    if ((getGetTransactionByBlockHashAndIndexMethod = QueryGrpc.getGetTransactionByBlockHashAndIndexMethod) == null) {
+      synchronized (QueryGrpc.class) {
+        if ((getGetTransactionByBlockHashAndIndexMethod = QueryGrpc.getGetTransactionByBlockHashAndIndexMethod) == null) {
+          QueryGrpc.getGetTransactionByBlockHashAndIndexMethod = getGetTransactionByBlockHashAndIndexMethod =
+              io.grpc.MethodDescriptor.<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest, bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse>newBuilder()
+              .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName(generateFullMethodName(SERVICE_NAME, "GetTransactionByBlockHashAndIndex"))
+              .setSampledToLocalTracing(true)
+              .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest.getDefaultInstance()))
+              .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(
+                  bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse.getDefaultInstance()))
+              .setSchemaDescriptor(new QueryMethodDescriptorSupplier("GetTransactionByBlockHashAndIndex"))
+              .build();
+        }
+      }
+    }
+    return getGetTransactionByBlockHashAndIndexMethod;
+  }
+
+  /**
+   * Creates a new async stub that supports all call types for the service
+   */
+  public static QueryStub newStub(io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<QueryStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<QueryStub>() {
+        @java.lang.Override
+        public QueryStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new QueryStub(channel, callOptions);
+        }
+      };
+    return QueryStub.newStub(factory, channel);
+  }
+
+  /**
+   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
+   */
+  public static QueryBlockingStub newBlockingStub(
+      io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<QueryBlockingStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<QueryBlockingStub>() {
+        @java.lang.Override
+        public QueryBlockingStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new QueryBlockingStub(channel, callOptions);
+        }
+      };
+    return QueryBlockingStub.newStub(factory, channel);
+  }
+
+  /**
+   * Creates a new ListenableFuture-style stub that supports unary calls on the service
+   */
+  public static QueryFutureStub newFutureStub(
+      io.grpc.Channel channel) {
+    io.grpc.stub.AbstractStub.StubFactory<QueryFutureStub> factory =
+      new io.grpc.stub.AbstractStub.StubFactory<QueryFutureStub>() {
+        @java.lang.Override
+        public QueryFutureStub newStub(io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+          return new QueryFutureStub(channel, callOptions);
+        }
+      };
+    return QueryFutureStub.newStub(factory, channel);
+  }
+
+  /**
+   */
+  public static abstract class QueryImplBase implements io.grpc.BindableService {
+
+    /**
+     */
+    public void getBlocks(bdledger.api.grpc.query.BlocksRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetBlocksResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getGetBlocksMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void countBlocks(bdledger.api.grpc.query.BlocksRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.CountBlocksResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getCountBlocksMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void getTransactions(bdledger.api.grpc.query.TransactionsRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionsResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getGetTransactionsMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void countTransactions(bdledger.api.grpc.query.TransactionsRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.CountTransactionsResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getCountTransactionsMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void getBlockByHash(bdledger.api.grpc.query.GetBlockByHashRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetBlockByHashResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getGetBlockByHashMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void getTransactionByHash(bdledger.api.grpc.query.GetTransactionByHashRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionByHashResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getGetTransactionByHashMethod(), responseObserver);
+    }
+
+    /**
+     */
+    public void getTransactionByBlockHashAndIndex(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse> responseObserver) {
+      asyncUnimplementedUnaryCall(getGetTransactionByBlockHashAndIndexMethod(), responseObserver);
+    }
+
+    @java.lang.Override public final io.grpc.ServerServiceDefinition bindService() {
+      return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
+          .addMethod(
+            getGetBlocksMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.BlocksRequest,
+                bdledger.api.grpc.query.GetBlocksResponse>(
+                  this, METHODID_GET_BLOCKS)))
+          .addMethod(
+            getCountBlocksMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.BlocksRequest,
+                bdledger.api.grpc.query.CountBlocksResponse>(
+                  this, METHODID_COUNT_BLOCKS)))
+          .addMethod(
+            getGetTransactionsMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.TransactionsRequest,
+                bdledger.api.grpc.query.GetTransactionsResponse>(
+                  this, METHODID_GET_TRANSACTIONS)))
+          .addMethod(
+            getCountTransactionsMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.TransactionsRequest,
+                bdledger.api.grpc.query.CountTransactionsResponse>(
+                  this, METHODID_COUNT_TRANSACTIONS)))
+          .addMethod(
+            getGetBlockByHashMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.GetBlockByHashRequest,
+                bdledger.api.grpc.query.GetBlockByHashResponse>(
+                  this, METHODID_GET_BLOCK_BY_HASH)))
+          .addMethod(
+            getGetTransactionByHashMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.GetTransactionByHashRequest,
+                bdledger.api.grpc.query.GetTransactionByHashResponse>(
+                  this, METHODID_GET_TRANSACTION_BY_HASH)))
+          .addMethod(
+            getGetTransactionByBlockHashAndIndexMethod(),
+            asyncUnaryCall(
+              new MethodHandlers<
+                bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest,
+                bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse>(
+                  this, METHODID_GET_TRANSACTION_BY_BLOCK_HASH_AND_INDEX)))
+          .build();
+    }
+  }
+
+  /**
+   */
+  public static final class QueryStub extends io.grpc.stub.AbstractAsyncStub<QueryStub> {
+    private QueryStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected QueryStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new QueryStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public void getBlocks(bdledger.api.grpc.query.BlocksRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetBlocksResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getGetBlocksMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void countBlocks(bdledger.api.grpc.query.BlocksRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.CountBlocksResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getCountBlocksMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void getTransactions(bdledger.api.grpc.query.TransactionsRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionsResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getGetTransactionsMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void countTransactions(bdledger.api.grpc.query.TransactionsRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.CountTransactionsResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getCountTransactionsMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void getBlockByHash(bdledger.api.grpc.query.GetBlockByHashRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetBlockByHashResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getGetBlockByHashMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void getTransactionByHash(bdledger.api.grpc.query.GetTransactionByHashRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionByHashResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getGetTransactionByHashMethod(), getCallOptions()), request, responseObserver);
+    }
+
+    /**
+     */
+    public void getTransactionByBlockHashAndIndex(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest request,
+        io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse> responseObserver) {
+      asyncUnaryCall(
+          getChannel().newCall(getGetTransactionByBlockHashAndIndexMethod(), getCallOptions()), request, responseObserver);
+    }
+  }
+
+  /**
+   */
+  public static final class QueryBlockingStub extends io.grpc.stub.AbstractBlockingStub<QueryBlockingStub> {
+    private QueryBlockingStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected QueryBlockingStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new QueryBlockingStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.GetBlocksResponse getBlocks(bdledger.api.grpc.query.BlocksRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getGetBlocksMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.CountBlocksResponse countBlocks(bdledger.api.grpc.query.BlocksRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getCountBlocksMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.GetTransactionsResponse getTransactions(bdledger.api.grpc.query.TransactionsRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getGetTransactionsMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.CountTransactionsResponse countTransactions(bdledger.api.grpc.query.TransactionsRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getCountTransactionsMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.GetBlockByHashResponse getBlockByHash(bdledger.api.grpc.query.GetBlockByHashRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getGetBlockByHashMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.GetTransactionByHashResponse getTransactionByHash(bdledger.api.grpc.query.GetTransactionByHashRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getGetTransactionByHashMethod(), getCallOptions(), request);
+    }
+
+    /**
+     */
+    public bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse getTransactionByBlockHashAndIndex(bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest request) {
+      return blockingUnaryCall(
+          getChannel(), getGetTransactionByBlockHashAndIndexMethod(), getCallOptions(), request);
+    }
+  }
+
+  /**
+   */
+  public static final class QueryFutureStub extends io.grpc.stub.AbstractFutureStub<QueryFutureStub> {
+    private QueryFutureStub(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      super(channel, callOptions);
+    }
+
+    @java.lang.Override
+    protected QueryFutureStub build(
+        io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
+      return new QueryFutureStub(channel, callOptions);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.GetBlocksResponse> getBlocks(
+        bdledger.api.grpc.query.BlocksRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getGetBlocksMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.CountBlocksResponse> countBlocks(
+        bdledger.api.grpc.query.BlocksRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getCountBlocksMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.GetTransactionsResponse> getTransactions(
+        bdledger.api.grpc.query.TransactionsRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getGetTransactionsMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.CountTransactionsResponse> countTransactions(
+        bdledger.api.grpc.query.TransactionsRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getCountTransactionsMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.GetBlockByHashResponse> getBlockByHash(
+        bdledger.api.grpc.query.GetBlockByHashRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getGetBlockByHashMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.GetTransactionByHashResponse> getTransactionByHash(
+        bdledger.api.grpc.query.GetTransactionByHashRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getGetTransactionByHashMethod(), getCallOptions()), request);
+    }
+
+    /**
+     */
+    public com.google.common.util.concurrent.ListenableFuture<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse> getTransactionByBlockHashAndIndex(
+        bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest request) {
+      return futureUnaryCall(
+          getChannel().newCall(getGetTransactionByBlockHashAndIndexMethod(), getCallOptions()), request);
+    }
+  }
+
+  private static final int METHODID_GET_BLOCKS = 0;
+  private static final int METHODID_COUNT_BLOCKS = 1;
+  private static final int METHODID_GET_TRANSACTIONS = 2;
+  private static final int METHODID_COUNT_TRANSACTIONS = 3;
+  private static final int METHODID_GET_BLOCK_BY_HASH = 4;
+  private static final int METHODID_GET_TRANSACTION_BY_HASH = 5;
+  private static final int METHODID_GET_TRANSACTION_BY_BLOCK_HASH_AND_INDEX = 6;
+
+  private static final class MethodHandlers<Req, Resp> implements
+      io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ServerStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.ClientStreamingMethod<Req, Resp>,
+      io.grpc.stub.ServerCalls.BidiStreamingMethod<Req, Resp> {
+    private final QueryImplBase serviceImpl;
+    private final int methodId;
+
+    MethodHandlers(QueryImplBase serviceImpl, int methodId) {
+      this.serviceImpl = serviceImpl;
+      this.methodId = methodId;
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        case METHODID_GET_BLOCKS:
+          serviceImpl.getBlocks((bdledger.api.grpc.query.BlocksRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetBlocksResponse>) responseObserver);
+          break;
+        case METHODID_COUNT_BLOCKS:
+          serviceImpl.countBlocks((bdledger.api.grpc.query.BlocksRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.CountBlocksResponse>) responseObserver);
+          break;
+        case METHODID_GET_TRANSACTIONS:
+          serviceImpl.getTransactions((bdledger.api.grpc.query.TransactionsRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionsResponse>) responseObserver);
+          break;
+        case METHODID_COUNT_TRANSACTIONS:
+          serviceImpl.countTransactions((bdledger.api.grpc.query.TransactionsRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.CountTransactionsResponse>) responseObserver);
+          break;
+        case METHODID_GET_BLOCK_BY_HASH:
+          serviceImpl.getBlockByHash((bdledger.api.grpc.query.GetBlockByHashRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetBlockByHashResponse>) responseObserver);
+          break;
+        case METHODID_GET_TRANSACTION_BY_HASH:
+          serviceImpl.getTransactionByHash((bdledger.api.grpc.query.GetTransactionByHashRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionByHashResponse>) responseObserver);
+          break;
+        case METHODID_GET_TRANSACTION_BY_BLOCK_HASH_AND_INDEX:
+          serviceImpl.getTransactionByBlockHashAndIndex((bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexRequest) request,
+              (io.grpc.stub.StreamObserver<bdledger.api.grpc.query.GetTransactionByBlockHashAndIndexResponse>) responseObserver);
+          break;
+        default:
+          throw new AssertionError();
+      }
+    }
+
+    @java.lang.Override
+    @java.lang.SuppressWarnings("unchecked")
+    public io.grpc.stub.StreamObserver<Req> invoke(
+        io.grpc.stub.StreamObserver<Resp> responseObserver) {
+      switch (methodId) {
+        default:
+          throw new AssertionError();
+      }
+    }
+  }
+
+  private static abstract class QueryBaseDescriptorSupplier
+      implements io.grpc.protobuf.ProtoFileDescriptorSupplier, io.grpc.protobuf.ProtoServiceDescriptorSupplier {
+    QueryBaseDescriptorSupplier() {}
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.FileDescriptor getFileDescriptor() {
+      return bdledger.api.grpc.query.QueryProto.getDescriptor();
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.ServiceDescriptor getServiceDescriptor() {
+      return getFileDescriptor().findServiceByName("Query");
+    }
+  }
+
+  private static final class QueryFileDescriptorSupplier
+      extends QueryBaseDescriptorSupplier {
+    QueryFileDescriptorSupplier() {}
+  }
+
+  private static final class QueryMethodDescriptorSupplier
+      extends QueryBaseDescriptorSupplier
+      implements io.grpc.protobuf.ProtoMethodDescriptorSupplier {
+    private final String methodName;
+
+    QueryMethodDescriptorSupplier(String methodName) {
+      this.methodName = methodName;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.MethodDescriptor getMethodDescriptor() {
+      return getServiceDescriptor().findMethodByName(methodName);
+    }
+  }
+
+  private static volatile io.grpc.ServiceDescriptor serviceDescriptor;
+
+  public static io.grpc.ServiceDescriptor getServiceDescriptor() {
+    io.grpc.ServiceDescriptor result = serviceDescriptor;
+    if (result == null) {
+      synchronized (QueryGrpc.class) {
+        result = serviceDescriptor;
+        if (result == null) {
+          serviceDescriptor = result = io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
+              .setSchemaDescriptor(new QueryFileDescriptorSupplier())
+              .addMethod(getGetBlocksMethod())
+              .addMethod(getCountBlocksMethod())
+              .addMethod(getGetTransactionsMethod())
+              .addMethod(getCountTransactionsMethod())
+              .addMethod(getGetBlockByHashMethod())
+              .addMethod(getGetTransactionByHashMethod())
+              .addMethod(getGetTransactionByBlockHashAndIndexMethod())
+              .build();
+        }
+      }
+    }
+    return result;
+  }
+}

src/main/java/bdledger/api/grpc/query/QueryProto.java

@@ -0,0 +1,241 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public final class QueryProto {
+  private QueryProto() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_TransactionFilter_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_TransactionFilter_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_BlockFilter_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_BlockFilter_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_BlocksRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_BlocksRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetBlocksResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetBlocksResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_CountBlocksResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_CountBlocksResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_TransactionsRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_TransactionsRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetTransactionsResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetTransactionsResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_CountTransactionsResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_CountTransactionsResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetBlockByHashRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetBlockByHashRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetBlockByHashResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetBlockByHashResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetTransactionByHashRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetTransactionByHashRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetTransactionByHashResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetTransactionByHashResponse_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_descriptor;
+  static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\030bdledger/api/query.proto\022\014bdledger.api" +
+      "\032\031bdledger/api/common.proto\"N\n\021Transacti" +
+      "onFilter\022\014\n\004hash\030\001 \001(\014\022\014\n\004from\030\002 \001(\014\022\n\n\002" +
+      "to\030\003 \001(\014\022\021\n\ttimestamp\030\004 \001(\014\".\n\013BlockFilt" +
+      "er\022\014\n\004hash\030\001 \001(\014\022\021\n\ttimestamp\030\002 \001(\003\"{\n\rB" +
+      "locksRequest\022\016\n\006ledger\030\001 \001(\t\022*\n\007filters\030" +
+      "\002 \003(\0132\031.bdledger.api.BlockFilter\022\027\n\017star" +
+      "t_timestamp\030\003 \001(\003\022\025\n\rend_timestamp\030\004 \001(\003" +
+      "\"h\n\021GetBlocksResponse\022#\n\006blocks\030\001 \003(\0132\023." +
+      "bdledger.api.Block\022\027\n\017start_timestamp\030\002 " +
+      "\001(\003\022\025\n\rend_timestamp\030\003 \001(\003\"$\n\023CountBlock" +
+      "sResponse\022\r\n\005count\030\001 \001(\004\"\207\001\n\023Transaction" +
+      "sRequest\022\016\n\006ledger\030\001 \001(\t\0220\n\007filters\030\002 \003(" +
+      "\0132\037.bdledger.api.TransactionFilter\022\027\n\017st" +
+      "art_timestamp\030\003 \001(\003\022\025\n\rend_timestamp\030\004 \001" +
+      "(\003\"z\n\027GetTransactionsResponse\022/\n\014transac" +
+      "tions\030\001 \003(\0132\031.bdledger.api.Transaction\022\027" +
+      "\n\017start_timestamp\030\002 \001(\003\022\025\n\rend_timestamp" +
+      "\030\003 \001(\003\"*\n\031CountTransactionsResponse\022\r\n\005c" +
+      "ount\030\001 \001(\004\"O\n\025GetBlockByHashRequest\022\016\n\006l" +
+      "edger\030\001 \001(\t\022\014\n\004hash\030\002 \001(\014\022\030\n\020full_transa" +
+      "ction\030\003 \001(\010\"<\n\026GetBlockByHashResponse\022\"\n" +
+      "\005block\030\001 \001(\0132\023.bdledger.api.Block\";\n\033Get" +
+      "TransactionByHashRequest\022\016\n\006ledger\030\001 \001(\t" +
+      "\022\014\n\004hash\030\002 \001(\014\"N\n\034GetTransactionByHashRe" +
+      "sponse\022.\n\013transaction\030\001 \001(\0132\031.bdledger.a" +
+      "pi.Transaction\"]\n(GetTransactionByBlockH" +
+      "ashAndIndexRequest\022\016\n\006ledger\030\001 \001(\t\022\022\n\nbl" +
+      "ock_hash\030\002 \001(\014\022\r\n\005index\030\003 \001(\r\"[\n)GetTran" +
+      "sactionByBlockHashAndIndexResponse\022.\n\013tr" +
+      "ansaction\030\001 \001(\0132\031.bdledger.api.Transacti" +
+      "on2\302\005\n\005Query\022I\n\tGetBlocks\022\033.bdledger.api" +
+      ".BlocksRequest\032\037.bdledger.api.GetBlocksR" +
+      "esponse\022M\n\013CountBlocks\022\033.bdledger.api.Bl" +
+      "ocksRequest\032!.bdledger.api.CountBlocksRe" +
+      "sponse\022[\n\017GetTransactions\022!.bdledger.api" +
+      ".TransactionsRequest\032%.bdledger.api.GetT" +
+      "ransactionsResponse\022_\n\021CountTransactions" +
+      "\022!.bdledger.api.TransactionsRequest\032\'.bd" +
+      "ledger.api.CountTransactionsResponse\022[\n\016" +
+      "GetBlockByHash\022#.bdledger.api.GetBlockBy" +
+      "HashRequest\032$.bdledger.api.GetBlockByHas" +
+      "hResponse\022m\n\024GetTransactionByHash\022).bdle" +
+      "dger.api.GetTransactionByHashRequest\032*.b" +
+      "dledger.api.GetTransactionByHashResponse" +
+      "\022\224\001\n!GetTransactionByBlockHashAndIndex\0226" +
+      ".bdledger.api.GetTransactionByBlockHashA" +
+      "ndIndexRequest\0327.bdledger.api.GetTransac" +
+      "tionByBlockHashAndIndexResponseBO\n\027bdled" +
+      "ger.api.grpc.queryB\nQueryProtoP\001Z&bdware" +
+      ".org/bdledger/pkg/api/grpc/protob\006proto3"
+    };
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+          bdledger.api.grpc.common.CommonProto.getDescriptor(),
+        });
+    internal_static_bdledger_api_TransactionFilter_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_bdledger_api_TransactionFilter_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_TransactionFilter_descriptor,
+        new java.lang.String[] { "Hash", "From", "To", "Timestamp", });
+    internal_static_bdledger_api_BlockFilter_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_bdledger_api_BlockFilter_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_BlockFilter_descriptor,
+        new java.lang.String[] { "Hash", "Timestamp", });
+    internal_static_bdledger_api_BlocksRequest_descriptor =
+      getDescriptor().getMessageTypes().get(2);
+    internal_static_bdledger_api_BlocksRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_BlocksRequest_descriptor,
+        new java.lang.String[] { "Ledger", "Filters", "StartTimestamp", "EndTimestamp", });
+    internal_static_bdledger_api_GetBlocksResponse_descriptor =
+      getDescriptor().getMessageTypes().get(3);
+    internal_static_bdledger_api_GetBlocksResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetBlocksResponse_descriptor,
+        new java.lang.String[] { "Blocks", "StartTimestamp", "EndTimestamp", });
+    internal_static_bdledger_api_CountBlocksResponse_descriptor =
+      getDescriptor().getMessageTypes().get(4);
+    internal_static_bdledger_api_CountBlocksResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_CountBlocksResponse_descriptor,
+        new java.lang.String[] { "Count", });
+    internal_static_bdledger_api_TransactionsRequest_descriptor =
+      getDescriptor().getMessageTypes().get(5);
+    internal_static_bdledger_api_TransactionsRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_TransactionsRequest_descriptor,
+        new java.lang.String[] { "Ledger", "Filters", "StartTimestamp", "EndTimestamp", });
+    internal_static_bdledger_api_GetTransactionsResponse_descriptor =
+      getDescriptor().getMessageTypes().get(6);
+    internal_static_bdledger_api_GetTransactionsResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetTransactionsResponse_descriptor,
+        new java.lang.String[] { "Transactions", "StartTimestamp", "EndTimestamp", });
+    internal_static_bdledger_api_CountTransactionsResponse_descriptor =
+      getDescriptor().getMessageTypes().get(7);
+    internal_static_bdledger_api_CountTransactionsResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_CountTransactionsResponse_descriptor,
+        new java.lang.String[] { "Count", });
+    internal_static_bdledger_api_GetBlockByHashRequest_descriptor =
+      getDescriptor().getMessageTypes().get(8);
+    internal_static_bdledger_api_GetBlockByHashRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetBlockByHashRequest_descriptor,
+        new java.lang.String[] { "Ledger", "Hash", "FullTransaction", });
+    internal_static_bdledger_api_GetBlockByHashResponse_descriptor =
+      getDescriptor().getMessageTypes().get(9);
+    internal_static_bdledger_api_GetBlockByHashResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetBlockByHashResponse_descriptor,
+        new java.lang.String[] { "Block", });
+    internal_static_bdledger_api_GetTransactionByHashRequest_descriptor =
+      getDescriptor().getMessageTypes().get(10);
+    internal_static_bdledger_api_GetTransactionByHashRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetTransactionByHashRequest_descriptor,
+        new java.lang.String[] { "Ledger", "Hash", });
+    internal_static_bdledger_api_GetTransactionByHashResponse_descriptor =
+      getDescriptor().getMessageTypes().get(11);
+    internal_static_bdledger_api_GetTransactionByHashResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetTransactionByHashResponse_descriptor,
+        new java.lang.String[] { "Transaction", });
+    internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_descriptor =
+      getDescriptor().getMessageTypes().get(12);
+    internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetTransactionByBlockHashAndIndexRequest_descriptor,
+        new java.lang.String[] { "Ledger", "BlockHash", "Index", });
+    internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_descriptor =
+      getDescriptor().getMessageTypes().get(13);
+    internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_bdledger_api_GetTransactionByBlockHashAndIndexResponse_descriptor,
+        new java.lang.String[] { "Transaction", });
+    bdledger.api.grpc.common.CommonProto.getDescriptor();
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}

src/main/java/bdledger/api/grpc/query/TransactionFilter.java

@@ -1,22 +1,36 @@
 // Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: bdchain/api/ac_chain.proto
+// source: bdledger/api/query.proto
 
-package bdchain.api.grpc.acchain;
+package bdledger.api.grpc.query;
 
 /**
- * Protobuf type {@code bdchain.api.acchain.GetBlockByNumberRequest}
+ * <pre>
+ * repeated Transaction/BlockFilters are combined by "&amp;&amp;"(and) operator;
+ * </pre>
+ *
+ * Protobuf type {@code bdledger.api.TransactionFilter}
  */
-public  final class GetBlockByNumberRequest extends
+public  final class TransactionFilter extends
     com.google.protobuf.GeneratedMessageV3 implements
-    // @@protoc_insertion_point(message_implements:bdchain.api.acchain.GetBlockByNumberRequest)
+    // @@protoc_insertion_point(message_implements:bdledger.api.TransactionFilter)
-    GetBlockByNumberRequestOrBuilder {
+    TransactionFilterOrBuilder {
 private static final long serialVersionUID = 0L;
-  // Use GetBlockByNumberRequest.newBuilder() to construct.
+  // Use TransactionFilter.newBuilder() to construct.
-  private GetBlockByNumberRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+  private TransactionFilter(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
     super(builder);
   }
-  private GetBlockByNumberRequest() {
+  private TransactionFilter() {
-    ledger_ = "";
+    hash_ = com.google.protobuf.ByteString.EMPTY;
+    from_ = com.google.protobuf.ByteString.EMPTY;
+    to_ = com.google.protobuf.ByteString.EMPTY;
+    timestamp_ = com.google.protobuf.ByteString.EMPTY;
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new TransactionFilter();
   }
 
   @java.lang.Override
@@ -24,7 +38,7 @@ private static final long serialVersionUID = 0L;
   getUnknownFields() {
     return this.unknownFields;
   }
-  private GetBlockByNumberRequest(
+  private TransactionFilter(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
@@ -32,7 +46,6 @@ private static final long serialVersionUID = 0L;
     if (extensionRegistry == null) {
       throw new java.lang.NullPointerException();
     }
-    int mutable_bitField0_ = 0;
     com.google.protobuf.UnknownFieldSet.Builder unknownFields =
         com.google.protobuf.UnknownFieldSet.newBuilder();
     try {
@@ -44,19 +57,23 @@ private static final long serialVersionUID = 0L;
             done = true;
             break;
           case 10: {
-            java.lang.String s = input.readStringRequireUtf8();
 
-            ledger_ = s;
+            hash_ = input.readBytes();
             break;
           }
-          case 16: {
+          case 18: {
 
-            number_ = input.readUInt64();
+            from_ = input.readBytes();
             break;
           }
-          case 24: {
+          case 26: {
 
-            fullTransaction_ = input.readBool();
+            to_ = input.readBytes();
+            break;
+          }
+          case 34: {
+
+            timestamp_ = input.readBytes();
             break;
           }
           default: {
@@ -80,67 +97,55 @@ private static final long serialVersionUID = 0L;
   }
   public static final com.google.protobuf.Descriptors.Descriptor
       getDescriptor() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByNumberRequest_descriptor;
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_TransactionFilter_descriptor;
   }
 
   @java.lang.Override
   protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internalGetFieldAccessorTable() {
-    return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByNumberRequest_fieldAccessorTable
+    return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_TransactionFilter_fieldAccessorTable
         .ensureFieldAccessorsInitialized(
-            bdchain.api.grpc.acchain.GetBlockByNumberRequest.class, bdchain.api.grpc.acchain.GetBlockByNumberRequest.Builder.class);
+            bdledger.api.grpc.query.TransactionFilter.class, bdledger.api.grpc.query.TransactionFilter.Builder.class);
   }
 
-  public static final int LEDGER_FIELD_NUMBER = 1;
+  public static final int HASH_FIELD_NUMBER = 1;
-  private volatile java.lang.Object ledger_;
+  private com.google.protobuf.ByteString hash_;
   /**
-   * <code>string ledger = 1;</code>
+   * <code>bytes hash = 1;</code>
+   * @return The hash.
    */
-  public java.lang.String getLedger() {
+  public com.google.protobuf.ByteString getHash() {
-    java.lang.Object ref = ledger_;
+    return hash_;
-    if (ref instanceof java.lang.String) {
-      return (java.lang.String) ref;
-    } else {
-      com.google.protobuf.ByteString bs = 
-          (com.google.protobuf.ByteString) ref;
-      java.lang.String s = bs.toStringUtf8();
-      ledger_ = s;
-      return s;
-    }
-  }
-  /**
-   * <code>string ledger = 1;</code>
-   */
-  public com.google.protobuf.ByteString
-      getLedgerBytes() {
-    java.lang.Object ref = ledger_;
-    if (ref instanceof java.lang.String) {
-      com.google.protobuf.ByteString b = 
-          com.google.protobuf.ByteString.copyFromUtf8(
-              (java.lang.String) ref);
-      ledger_ = b;
-      return b;
-    } else {
-      return (com.google.protobuf.ByteString) ref;
-    }
   }
 
-  public static final int NUMBER_FIELD_NUMBER = 2;
+  public static final int FROM_FIELD_NUMBER = 2;
-  private long number_;
+  private com.google.protobuf.ByteString from_;
   /**
-   * <code>uint64 number = 2;</code>
+   * <code>bytes from = 2;</code>
+   * @return The from.
    */
-  public long getNumber() {
+  public com.google.protobuf.ByteString getFrom() {
-    return number_;
+    return from_;
   }
 
-  public static final int FULL_TRANSACTION_FIELD_NUMBER = 3;
+  public static final int TO_FIELD_NUMBER = 3;
-  private boolean fullTransaction_;
+  private com.google.protobuf.ByteString to_;
   /**
-   * <code>bool full_transaction = 3;</code>
+   * <code>bytes to = 3;</code>
+   * @return The to.
    */
-  public boolean getFullTransaction() {
+  public com.google.protobuf.ByteString getTo() {
-    return fullTransaction_;
+    return to_;
+  }
+
+  public static final int TIMESTAMP_FIELD_NUMBER = 4;
+  private com.google.protobuf.ByteString timestamp_;
+  /**
+   * <code>bytes timestamp = 4;</code>
+   * @return The timestamp.
+   */
+  public com.google.protobuf.ByteString getTimestamp() {
+    return timestamp_;
   }
 
   private byte memoizedIsInitialized = -1;
@@ -157,14 +162,17 @@ private static final long serialVersionUID = 0L;
   @java.lang.Override
   public void writeTo(com.google.protobuf.CodedOutputStream output)
                       throws java.io.IOException {
-    if (!getLedgerBytes().isEmpty()) {
+    if (!hash_.isEmpty()) {
-      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, ledger_);
+      output.writeBytes(1, hash_);
     }
-    if (number_ != 0L) {
+    if (!from_.isEmpty()) {
-      output.writeUInt64(2, number_);
+      output.writeBytes(2, from_);
     }
-    if (fullTransaction_ != false) {
+    if (!to_.isEmpty()) {
-      output.writeBool(3, fullTransaction_);
+      output.writeBytes(3, to_);
+    }
+    if (!timestamp_.isEmpty()) {
+      output.writeBytes(4, timestamp_);
     }
     unknownFields.writeTo(output);
   }
@@ -175,16 +183,21 @@ private static final long serialVersionUID = 0L;
     if (size != -1) return size;
 
     size = 0;
-    if (!getLedgerBytes().isEmpty()) {
+    if (!hash_.isEmpty()) {
-      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, ledger_);
-    }
-    if (number_ != 0L) {
       size += com.google.protobuf.CodedOutputStream
-        .computeUInt64Size(2, number_);
+        .computeBytesSize(1, hash_);
     }
-    if (fullTransaction_ != false) {
+    if (!from_.isEmpty()) {
       size += com.google.protobuf.CodedOutputStream
-        .computeBoolSize(3, fullTransaction_);
+        .computeBytesSize(2, from_);
+    }
+    if (!to_.isEmpty()) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeBytesSize(3, to_);
+    }
+    if (!timestamp_.isEmpty()) {
+      size += com.google.protobuf.CodedOutputStream
+        .computeBytesSize(4, timestamp_);
     }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
@@ -196,17 +209,19 @@ private static final long serialVersionUID = 0L;
     if (obj == this) {
      return true;
     }
-    if (!(obj instanceof bdchain.api.grpc.acchain.GetBlockByNumberRequest)) {
+    if (!(obj instanceof bdledger.api.grpc.query.TransactionFilter)) {
       return super.equals(obj);
     }
-    bdchain.api.grpc.acchain.GetBlockByNumberRequest other = (bdchain.api.grpc.acchain.GetBlockByNumberRequest) obj;
+    bdledger.api.grpc.query.TransactionFilter other = (bdledger.api.grpc.query.TransactionFilter) obj;
 
-    if (!getLedger()
+    if (!getHash()
-        .equals(other.getLedger())) return false;
+        .equals(other.getHash())) return false;
-    if (getNumber()
+    if (!getFrom()
-        != other.getNumber()) return false;
+        .equals(other.getFrom())) return false;
-    if (getFullTransaction()
+    if (!getTo()
-        != other.getFullTransaction()) return false;
+        .equals(other.getTo())) return false;
+    if (!getTimestamp()
+        .equals(other.getTimestamp())) return false;
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -218,82 +233,82 @@ private static final long serialVersionUID = 0L;
     }
     int hash = 41;
     hash = (19 * hash) + getDescriptor().hashCode();
-    hash = (37 * hash) + LEDGER_FIELD_NUMBER;
+    hash = (37 * hash) + HASH_FIELD_NUMBER;
-    hash = (53 * hash) + getLedger().hashCode();
+    hash = (53 * hash) + getHash().hashCode();
-    hash = (37 * hash) + NUMBER_FIELD_NUMBER;
+    hash = (37 * hash) + FROM_FIELD_NUMBER;
-    hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+    hash = (53 * hash) + getFrom().hashCode();
-        getNumber());
+    hash = (37 * hash) + TO_FIELD_NUMBER;
-    hash = (37 * hash) + FULL_TRANSACTION_FIELD_NUMBER;
+    hash = (53 * hash) + getTo().hashCode();
-    hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(
+    hash = (37 * hash) + TIMESTAMP_FIELD_NUMBER;
-        getFullTransaction());
+    hash = (53 * hash) + getTimestamp().hashCode();
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
   }
 
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       java.nio.ByteBuffer data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       java.nio.ByteBuffer data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       com.google.protobuf.ByteString data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       com.google.protobuf.ByteString data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(byte[] data)
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(byte[] data)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       byte[] data,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws com.google.protobuf.InvalidProtocolBufferException {
     return PARSER.parseFrom(data, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseDelimitedFrom(java.io.InputStream input)
+  public static bdledger.api.grpc.query.TransactionFilter parseDelimitedFrom(java.io.InputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseDelimitedFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseDelimitedFrom(
       java.io.InputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       com.google.protobuf.CodedInputStream input)
       throws java.io.IOException {
     return com.google.protobuf.GeneratedMessageV3
         .parseWithIOException(PARSER, input);
   }
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest parseFrom(
+  public static bdledger.api.grpc.query.TransactionFilter parseFrom(
       com.google.protobuf.CodedInputStream input,
       com.google.protobuf.ExtensionRegistryLite extensionRegistry)
       throws java.io.IOException {
@@ -306,7 +321,7 @@ private static final long serialVersionUID = 0L;
   public static Builder newBuilder() {
     return DEFAULT_INSTANCE.toBuilder();
   }
-  public static Builder newBuilder(bdchain.api.grpc.acchain.GetBlockByNumberRequest prototype) {
+  public static Builder newBuilder(bdledger.api.grpc.query.TransactionFilter prototype) {
     return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
   }
   @java.lang.Override
@@ -322,26 +337,30 @@ private static final long serialVersionUID = 0L;
     return builder;
   }
   /**
-   * Protobuf type {@code bdchain.api.acchain.GetBlockByNumberRequest}
+   * <pre>
+   * repeated Transaction/BlockFilters are combined by "&amp;&amp;"(and) operator;
+   * </pre>
+   *
+   * Protobuf type {@code bdledger.api.TransactionFilter}
    */
   public static final class Builder extends
       com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-      // @@protoc_insertion_point(builder_implements:bdchain.api.acchain.GetBlockByNumberRequest)
+      // @@protoc_insertion_point(builder_implements:bdledger.api.TransactionFilter)
-      bdchain.api.grpc.acchain.GetBlockByNumberRequestOrBuilder {
+      bdledger.api.grpc.query.TransactionFilterOrBuilder {
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByNumberRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_TransactionFilter_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByNumberRequest_fieldAccessorTable
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_TransactionFilter_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              bdchain.api.grpc.acchain.GetBlockByNumberRequest.class, bdchain.api.grpc.acchain.GetBlockByNumberRequest.Builder.class);
+              bdledger.api.grpc.query.TransactionFilter.class, bdledger.api.grpc.query.TransactionFilter.Builder.class);
     }
 
-    // Construct using bdchain.api.grpc.acchain.GetBlockByNumberRequest.newBuilder()
+    // Construct using bdledger.api.grpc.query.TransactionFilter.newBuilder()
     private Builder() {
       maybeForceBuilderInitialization();
     }
@@ -359,11 +378,13 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public Builder clear() {
       super.clear();
-      ledger_ = "";
+      hash_ = com.google.protobuf.ByteString.EMPTY;
 
-      number_ = 0L;
+      from_ = com.google.protobuf.ByteString.EMPTY;
 
-      fullTransaction_ = false;
+      to_ = com.google.protobuf.ByteString.EMPTY;
+
+      timestamp_ = com.google.protobuf.ByteString.EMPTY;
 
       return this;
     }
@@ -371,17 +392,17 @@ private static final long serialVersionUID = 0L;
     @java.lang.Override
     public com.google.protobuf.Descriptors.Descriptor
         getDescriptorForType() {
-      return bdchain.api.grpc.acchain.AccountingChainProto.internal_static_bdchain_api_acchain_GetBlockByNumberRequest_descriptor;
+      return bdledger.api.grpc.query.QueryProto.internal_static_bdledger_api_TransactionFilter_descriptor;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetBlockByNumberRequest getDefaultInstanceForType() {
+    public bdledger.api.grpc.query.TransactionFilter getDefaultInstanceForType() {
-      return bdchain.api.grpc.acchain.GetBlockByNumberRequest.getDefaultInstance();
+      return bdledger.api.grpc.query.TransactionFilter.getDefaultInstance();
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetBlockByNumberRequest build() {
+    public bdledger.api.grpc.query.TransactionFilter build() {
-      bdchain.api.grpc.acchain.GetBlockByNumberRequest result = buildPartial();
+      bdledger.api.grpc.query.TransactionFilter result = buildPartial();
       if (!result.isInitialized()) {
         throw newUninitializedMessageException(result);
       }
@@ -389,11 +410,12 @@ private static final long serialVersionUID = 0L;
     }
 
     @java.lang.Override
-    public bdchain.api.grpc.acchain.GetBlockByNumberRequest buildPartial() {
+    public bdledger.api.grpc.query.TransactionFilter buildPartial() {
-      bdchain.api.grpc.acchain.GetBlockByNumberRequest result = new bdchain.api.grpc.acchain.GetBlockByNumberRequest(this);
+      bdledger.api.grpc.query.TransactionFilter result = new bdledger.api.grpc.query.TransactionFilter(this);
-      result.ledger_ = ledger_;
+      result.hash_ = hash_;
-      result.number_ = number_;
+      result.from_ = from_;
-      result.fullTransaction_ = fullTransaction_;
+      result.to_ = to_;
+      result.timestamp_ = timestamp_;
       onBuilt();
       return result;
     }
@@ -432,25 +454,27 @@ private static final long serialVersionUID = 0L;
     }
     @java.lang.Override
     public Builder mergeFrom(com.google.protobuf.Message other) {
-      if (other instanceof bdchain.api.grpc.acchain.GetBlockByNumberRequest) {
+      if (other instanceof bdledger.api.grpc.query.TransactionFilter) {
-        return mergeFrom((bdchain.api.grpc.acchain.GetBlockByNumberRequest)other);
+        return mergeFrom((bdledger.api.grpc.query.TransactionFilter)other);
       } else {
         super.mergeFrom(other);
         return this;
       }
     }
 
-    public Builder mergeFrom(bdchain.api.grpc.acchain.GetBlockByNumberRequest other) {
+    public Builder mergeFrom(bdledger.api.grpc.query.TransactionFilter other) {
-      if (other == bdchain.api.grpc.acchain.GetBlockByNumberRequest.getDefaultInstance()) return this;
+      if (other == bdledger.api.grpc.query.TransactionFilter.getDefaultInstance()) return this;
-      if (!other.getLedger().isEmpty()) {
+      if (other.getHash() != com.google.protobuf.ByteString.EMPTY) {
-        ledger_ = other.ledger_;
+        setHash(other.getHash());
-        onChanged();
       }
-      if (other.getNumber() != 0L) {
+      if (other.getFrom() != com.google.protobuf.ByteString.EMPTY) {
-        setNumber(other.getNumber());
+        setFrom(other.getFrom());
       }
-      if (other.getFullTransaction() != false) {
+      if (other.getTo() != com.google.protobuf.ByteString.EMPTY) {
-        setFullTransaction(other.getFullTransaction());
+        setTo(other.getTo());
+      }
+      if (other.getTimestamp() != com.google.protobuf.ByteString.EMPTY) {
+        setTimestamp(other.getTimestamp());
       }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
@@ -467,11 +491,11 @@ private static final long serialVersionUID = 0L;
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
-      bdchain.api.grpc.acchain.GetBlockByNumberRequest parsedMessage = null;
+      bdledger.api.grpc.query.TransactionFilter parsedMessage = null;
       try {
         parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
       } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        parsedMessage = (bdchain.api.grpc.acchain.GetBlockByNumberRequest) e.getUnfinishedMessage();
+        parsedMessage = (bdledger.api.grpc.query.TransactionFilter) e.getUnfinishedMessage();
         throw e.unwrapIOException();
       } finally {
         if (parsedMessage != null) {
@@ -481,123 +505,134 @@ private static final long serialVersionUID = 0L;
       return this;
     }
 
-    private java.lang.Object ledger_ = "";
+    private com.google.protobuf.ByteString hash_ = com.google.protobuf.ByteString.EMPTY;
     /**
-     * <code>string ledger = 1;</code>
+     * <code>bytes hash = 1;</code>
+     * @return The hash.
      */
-    public java.lang.String getLedger() {
+    public com.google.protobuf.ByteString getHash() {
-      java.lang.Object ref = ledger_;
+      return hash_;
-      if (!(ref instanceof java.lang.String)) {
-        com.google.protobuf.ByteString bs =
-            (com.google.protobuf.ByteString) ref;
-        java.lang.String s = bs.toStringUtf8();
-        ledger_ = s;
-        return s;
-      } else {
-        return (java.lang.String) ref;
-      }
     }
     /**
-     * <code>string ledger = 1;</code>
+     * <code>bytes hash = 1;</code>
+     * @param value The hash to set.
+     * @return This builder for chaining.
      */
-    public com.google.protobuf.ByteString
+    public Builder setHash(com.google.protobuf.ByteString value) {
-        getLedgerBytes() {
-      java.lang.Object ref = ledger_;
-      if (ref instanceof String) {
-        com.google.protobuf.ByteString b = 
-            com.google.protobuf.ByteString.copyFromUtf8(
-                (java.lang.String) ref);
-        ledger_ = b;
-        return b;
-      } else {
-        return (com.google.protobuf.ByteString) ref;
-      }
-    }
-    /**
-     * <code>string ledger = 1;</code>
-     */
-    public Builder setLedger(
-        java.lang.String value) {
       if (value == null) {
     throw new NullPointerException();
   }
   
-      ledger_ = value;
+      hash_ = value;
       onChanged();
       return this;
     }
     /**
-     * <code>string ledger = 1;</code>
+     * <code>bytes hash = 1;</code>
+     * @return This builder for chaining.
      */
-    public Builder clearLedger() {
+    public Builder clearHash() {
       
-      ledger_ = getDefaultInstance().getLedger();
+      hash_ = getDefaultInstance().getHash();
       onChanged();
       return this;
     }
+
+    private com.google.protobuf.ByteString from_ = com.google.protobuf.ByteString.EMPTY;
     /**
-     * <code>string ledger = 1;</code>
+     * <code>bytes from = 2;</code>
+     * @return The from.
      */
-    public Builder setLedgerBytes(
+    public com.google.protobuf.ByteString getFrom() {
-        com.google.protobuf.ByteString value) {
+      return from_;
+    }
+    /**
+     * <code>bytes from = 2;</code>
+     * @param value The from to set.
+     * @return This builder for chaining.
+     */
+    public Builder setFrom(com.google.protobuf.ByteString value) {
       if (value == null) {
     throw new NullPointerException();
   }
-  checkByteStringIsUtf8(value);
   
-      ledger_ = value;
+      from_ = value;
-      onChanged();
-      return this;
-    }
-
-    private long number_ ;
-    /**
-     * <code>uint64 number = 2;</code>
-     */
-    public long getNumber() {
-      return number_;
-    }
-    /**
-     * <code>uint64 number = 2;</code>
-     */
-    public Builder setNumber(long value) {
-      
-      number_ = value;
       onChanged();
       return this;
     }
     /**
-     * <code>uint64 number = 2;</code>
+     * <code>bytes from = 2;</code>
+     * @return This builder for chaining.
      */
-    public Builder clearNumber() {
+    public Builder clearFrom() {
       
-      number_ = 0L;
+      from_ = getDefaultInstance().getFrom();
       onChanged();
       return this;
     }
 
-    private boolean fullTransaction_ ;
+    private com.google.protobuf.ByteString to_ = com.google.protobuf.ByteString.EMPTY;
     /**
-     * <code>bool full_transaction = 3;</code>
+     * <code>bytes to = 3;</code>
+     * @return The to.
      */
-    public boolean getFullTransaction() {
+    public com.google.protobuf.ByteString getTo() {
-      return fullTransaction_;
+      return to_;
     }
     /**
-     * <code>bool full_transaction = 3;</code>
+     * <code>bytes to = 3;</code>
+     * @param value The to to set.
+     * @return This builder for chaining.
      */
-    public Builder setFullTransaction(boolean value) {
+    public Builder setTo(com.google.protobuf.ByteString value) {
+      if (value == null) {
+    throw new NullPointerException();
+  }
   
-      fullTransaction_ = value;
+      to_ = value;
       onChanged();
       return this;
     }
     /**
-     * <code>bool full_transaction = 3;</code>
+     * <code>bytes to = 3;</code>
+     * @return This builder for chaining.
      */
-    public Builder clearFullTransaction() {
+    public Builder clearTo() {
       
-      fullTransaction_ = false;
+      to_ = getDefaultInstance().getTo();
+      onChanged();
+      return this;
+    }
+
+    private com.google.protobuf.ByteString timestamp_ = com.google.protobuf.ByteString.EMPTY;
+    /**
+     * <code>bytes timestamp = 4;</code>
+     * @return The timestamp.
+     */
+    public com.google.protobuf.ByteString getTimestamp() {
+      return timestamp_;
+    }
+    /**
+     * <code>bytes timestamp = 4;</code>
+     * @param value The timestamp to set.
+     * @return This builder for chaining.
+     */
+    public Builder setTimestamp(com.google.protobuf.ByteString value) {
+      if (value == null) {
+    throw new NullPointerException();
+  }
+  
+      timestamp_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     * <code>bytes timestamp = 4;</code>
+     * @return This builder for chaining.
+     */
+    public Builder clearTimestamp() {
+      
+      timestamp_ = getDefaultInstance().getTimestamp();
       onChanged();
       return this;
     }
@@ -614,41 +649,41 @@ private static final long serialVersionUID = 0L;
     }
 
 
-    // @@protoc_insertion_point(builder_scope:bdchain.api.acchain.GetBlockByNumberRequest)
+    // @@protoc_insertion_point(builder_scope:bdledger.api.TransactionFilter)
   }
 
-  // @@protoc_insertion_point(class_scope:bdchain.api.acchain.GetBlockByNumberRequest)
+  // @@protoc_insertion_point(class_scope:bdledger.api.TransactionFilter)
-  private static final bdchain.api.grpc.acchain.GetBlockByNumberRequest DEFAULT_INSTANCE;
+  private static final bdledger.api.grpc.query.TransactionFilter DEFAULT_INSTANCE;
   static {
-    DEFAULT_INSTANCE = new bdchain.api.grpc.acchain.GetBlockByNumberRequest();
+    DEFAULT_INSTANCE = new bdledger.api.grpc.query.TransactionFilter();
   }
 
-  public static bdchain.api.grpc.acchain.GetBlockByNumberRequest getDefaultInstance() {
+  public static bdledger.api.grpc.query.TransactionFilter getDefaultInstance() {
     return DEFAULT_INSTANCE;
   }
 
-  private static final com.google.protobuf.Parser<GetBlockByNumberRequest>
+  private static final com.google.protobuf.Parser<TransactionFilter>
-      PARSER = new com.google.protobuf.AbstractParser<GetBlockByNumberRequest>() {
+      PARSER = new com.google.protobuf.AbstractParser<TransactionFilter>() {
     @java.lang.Override
-    public GetBlockByNumberRequest parsePartialFrom(
+    public TransactionFilter parsePartialFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
-      return new GetBlockByNumberRequest(input, extensionRegistry);
+      return new TransactionFilter(input, extensionRegistry);
     }
   };
 
-  public static com.google.protobuf.Parser<GetBlockByNumberRequest> parser() {
+  public static com.google.protobuf.Parser<TransactionFilter> parser() {
     return PARSER;
   }
 
   @java.lang.Override
-  public com.google.protobuf.Parser<GetBlockByNumberRequest> getParserForType() {
+  public com.google.protobuf.Parser<TransactionFilter> getParserForType() {
     return PARSER;
   }
 
   @java.lang.Override
-  public bdchain.api.grpc.acchain.GetBlockByNumberRequest getDefaultInstanceForType() {
+  public bdledger.api.grpc.query.TransactionFilter getDefaultInstanceForType() {
     return DEFAULT_INSTANCE;
   }
 

src/main/java/bdledger/api/grpc/query/TransactionFilterOrBuilder.java

@@ -0,0 +1,33 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface TransactionFilterOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.TransactionFilter)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>bytes hash = 1;</code>
+   * @return The hash.
+   */
+  com.google.protobuf.ByteString getHash();
+
+  /**
+   * <code>bytes from = 2;</code>
+   * @return The from.
+   */
+  com.google.protobuf.ByteString getFrom();
+
+  /**
+   * <code>bytes to = 3;</code>
+   * @return The to.
+   */
+  com.google.protobuf.ByteString getTo();
+
+  /**
+   * <code>bytes timestamp = 4;</code>
+   * @return The timestamp.
+   */
+  com.google.protobuf.ByteString getTimestamp();
+}

src/main/java/bdledger/api/grpc/query/TransactionsRequestOrBuilder.java

@@ -0,0 +1,61 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: bdledger/api/query.proto
+
+package bdledger.api.grpc.query;
+
+public interface TransactionsRequestOrBuilder extends
+    // @@protoc_insertion_point(interface_extends:bdledger.api.TransactionsRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   * <code>string ledger = 1;</code>
+   * @return The ledger.
+   */
+  java.lang.String getLedger();
+  /**
+   * <code>string ledger = 1;</code>
+   * @return The bytes for ledger.
+   */
+  com.google.protobuf.ByteString
+      getLedgerBytes();
+
+  /**
+   * <code>repeated .bdledger.api.TransactionFilter filters = 2;</code>
+   */
+  java.util.List<bdledger.api.grpc.query.TransactionFilter> 
+      getFiltersList();
+  /**
+   * <code>repeated .bdledger.api.TransactionFilter filters = 2;</code>
+   */
+  bdledger.api.grpc.query.TransactionFilter getFilters(int index);
+  /**
+   * <code>repeated .bdledger.api.TransactionFilter filters = 2;</code>
+   */
+  int getFiltersCount();
+  /**
+   * <code>repeated .bdledger.api.TransactionFilter filters = 2;</code>
+   */
+  java.util.List<? extends bdledger.api.grpc.query.TransactionFilterOrBuilder> 
+      getFiltersOrBuilderList();
+  /**
+   * <code>repeated .bdledger.api.TransactionFilter filters = 2;</code>
+   */
+  bdledger.api.grpc.query.TransactionFilterOrBuilder getFiltersOrBuilder(
+      int index);
+
+  /**
+   * <pre>
+   * required
+   * </pre>
+   *
+   * <code>int64 start_timestamp = 3;</code>
+   * @return The startTimestamp.
+   */
+  long getStartTimestamp();
+
+  /**
+   * <code>int64 end_timestamp = 4;</code>
+   * @return The endTimestamp.
+   */
+  long getEndTimestamp();
+}

src/main/java/com/google/protobuf/Empty.java

@@ -28,6 +28,13 @@ private static final long serialVersionUID = 0L;
   private Empty() {
   }
 
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(
+      UnusedPrivateParameter unused) {
+    return new Empty();
+  }
+
   @java.lang.Override
   public final com.google.protobuf.UnknownFieldSet
   getUnknownFields() {

src/main/java/com/google/protobuf/EmptyProto.java

@@ -34,18 +34,10 @@ public final class EmptyProto {
       "/ptypes/empty\370\001\001\242\002\003GPB\252\002\036Google.Protobuf" +
       ".WellKnownTypesb\006proto3"
     };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+    descriptor = com.google.protobuf.Descriptors.FileDescriptor
-        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
-          public com.google.protobuf.ExtensionRegistry assignDescriptors(
-              com.google.protobuf.Descriptors.FileDescriptor root) {
-            descriptor = root;
-            return null;
-          }
-        };
-    com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
         new com.google.protobuf.Descriptors.FileDescriptor[] {
-        }, assigner);
+        });
     internal_static_google_protobuf_Empty_descriptor =
       getDescriptor().getMessageTypes().get(0);
     internal_static_google_protobuf_Empty_fieldAccessorTable = new

src/main/proto

@@ -1 +1 @@
-Subproject commit 70d4bb0f0c3a88f2ef459dfabdf521bf941dd667
+Subproject commit 08f427899ce6a20196b2969d09d152c1b6051306

src/test/java/bdledger/api/AccountingChainClientTests.java

@@ -1,4 +1,4 @@
-package bdchain.api;
+package bdledger.api;
 
 import bdchain.api.grpc.acchain.Block;
 import bdchain.api.grpc.acchain.Transaction;

src/test/java/bdledger/api/TransactionLedgerClientTests.java

@@ -1,4 +1,4 @@
-package bdchain.api;
+package bdledger.api;
 
 import bdchain.api.grpc.txledger.GetLedgersResponse;
 import bdchain.api.grpc.common.TransactionType;