diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 15eb1b0..adf61d1 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -9,6 +9,7 @@
     <ignored path="$PROJECT_DIR$/out/" />
     <ignored path="$PROJECT_DIR$/target/" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
+    <option name="TRACKING_ENABLED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
@@ -132,6 +133,8 @@
         <option value="$PROJECT_DIR$/log4j.properties" />
         <option value="$PROJECT_DIR$/src/main/java/blockchain/utility/Util.java" />
         <option value="$PROJECT_DIR$/src/test/java/blockchain/utility/UtilTest.java" />
+        <option value="$PROJECT_DIR$/src/test/java/blockchain/client/TestRegisterEnrollUser.java" />
+        <option value="$PROJECT_DIR$/src/test/java/blockchain/utility/ReadUserTest.java" />
         <option value="$PROJECT_DIR$/src/test/java/blockchain/client/TestEnrollAdmin.java" />
         <option value="$PROJECT_DIR$/src/test/java/blockchain/query/ChaincodeTransactionTest.java" />
         <option value="$PROJECT_DIR$/src/test/java/blockchain/query/CreateChaincodeUserTest.java" />
@@ -158,17 +161,21 @@
     <detection-done>true</detection-done>
     <sorting>DEFINITION_ORDER</sorting>
   </component>
+  <component name="NodePackageJsonFileManager">
+    <packageJsonPaths />
+  </component>
   <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="15" />
-    <option name="y" value="-10" />
-    <option name="width" value="1750" />
-    <option name="height" value="970" />
+    <option name="x" value="676" />
+    <option name="y" value="-9" />
+    <option name="width" value="976" />
+    <option name="height" value="1038" />
   </component>
   <component name="ProjectView">
     <navigator proportions="" version="1">
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
+      <pane id="AndroidView" />
       <pane id="PackagesPane" />
       <pane id="ProjectPane">
         <subPane>
@@ -229,7 +236,6 @@
               <item name="main" type="462c0819:PsiDirectoryNode" />
               <item name="java" type="462c0819:PsiDirectoryNode" />
               <item name="blockchain" type="462c0819:PsiDirectoryNode" />
-              <item name="client" type="462c0819:PsiDirectoryNode" />
             </path>
             <path>
               <item name="java-api" type="b2602c69:ProjectViewProjectNode" />
@@ -293,14 +299,6 @@
               <item name="database" type="462c0819:PsiDirectoryNode" />
               <item name="user" type="462c0819:PsiDirectoryNode" />
             </path>
-            <path>
-              <item name="java-api" type="b2602c69:ProjectViewProjectNode" />
-              <item name="java-api" type="462c0819:PsiDirectoryNode" />
-              <item name="src" type="462c0819:PsiDirectoryNode" />
-              <item name="main" type="462c0819:PsiDirectoryNode" />
-              <item name="java" type="462c0819:PsiDirectoryNode" />
-              <item name="restImplementation" type="462c0819:PsiDirectoryNode" />
-            </path>
             <path>
               <item name="java-api" type="b2602c69:ProjectViewProjectNode" />
               <item name="java-api" type="462c0819:PsiDirectoryNode" />
@@ -348,6 +346,15 @@
               <item name="blockchain" type="462c0819:PsiDirectoryNode" />
               <item name="query" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="java-api" type="b2602c69:ProjectViewProjectNode" />
+              <item name="java-api" type="462c0819:PsiDirectoryNode" />
+              <item name="src" type="462c0819:PsiDirectoryNode" />
+              <item name="test" type="462c0819:PsiDirectoryNode" />
+              <item name="java" type="462c0819:PsiDirectoryNode" />
+              <item name="blockchain" type="462c0819:PsiDirectoryNode" />
+              <item name="query" type="462c0819:PsiDirectoryNode" />
+            </path>
             <path>
               <item name="java-api" type="b2602c69:ProjectViewProjectNode" />
               <item name="java-api" type="462c0819:PsiDirectoryNode" />
@@ -417,11 +424,8 @@
   <component name="RunManager" selected="JUnit.QueryRegisterTest">
     <configuration default="true" type="Application" factoryName="Application">
       <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
     </configuration>
-    <configuration name="QueryChannelTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="ChaincodeTransactionTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="java-api" />
       <extension name="coverage">
         <pattern>
@@ -429,12 +433,20 @@
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="blockchain.query" />
-      <option name="MAIN_CLASS_NAME" value="blockchain.query.QueryChannelTest" />
+      <option name="MAIN_CLASS_NAME" value="blockchain.query.ChaincodeTransactionTest" />
+      <option name="METHOD_NAME" />
+      <option name="TEST_OBJECT" value="class" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <patterns />
     </configuration>
     <configuration name="QueryRegisterTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="java-api" />
@@ -444,12 +456,16 @@
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="blockchain.query" />
       <option name="MAIN_CLASS_NAME" value="blockchain.query.QueryRegisterTest" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <patterns />
     </configuration>
     <configuration name="QueryTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="java-api" />
@@ -462,9 +478,34 @@
       <option name="PACKAGE_NAME" value="blockchain.query" />
       <option name="MAIN_CLASS_NAME" value="blockchain.query.QueryTest" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <patterns />
+    </configuration>
+    <configuration name="QueryWrapperTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="java-api" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="blockchain.queryWrapper.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="PACKAGE_NAME" value="blockchain.queryWrapper" />
+      <option name="MAIN_CLASS_NAME" value="blockchain.queryWrapper.QueryWrapperTest" />
+      <option name="METHOD_NAME" />
+      <option name="TEST_OBJECT" value="class" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
+      <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <patterns />
     </configuration>
     <configuration name="TestEnrollAdmin" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="java-api" />
@@ -474,54 +515,68 @@
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="blockchain.client" />
       <option name="MAIN_CLASS_NAME" value="blockchain.client.TestEnrollAdmin" />
+      <option name="METHOD_NAME" />
+      <option name="TEST_OBJECT" value="class" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
-    </configuration>
-    <configuration name="TestRegisterEnrollUser" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="java-api" />
-      <extension name="coverage">
-        <pattern>
-          <option name="PATTERN" value="blockchain.client.*" />
-          <option name="ENABLED" value="true" />
-        </pattern>
-      </extension>
-      <option name="PACKAGE_NAME" value="blockchain.client" />
-      <option name="MAIN_CLASS_NAME" value="blockchain.client.TestRegisterEnrollUser" />
-      <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <patterns />
     </configuration>
     <configuration default="true" type="JUnit" factoryName="JUnit">
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="PACKAGE_NAME" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="METHOD_NAME" />
+      <option name="TEST_OBJECT" value="class" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <patterns />
     </configuration>
     <configuration name="App" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot">
       <module name="java-api" />
       <option name="SPRING_BOOT_MAIN_CLASS" value="application.App" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
     </configuration>
     <configuration default="true" type="TestNG" factoryName="TestNG">
+      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
+      <option name="ALTERNATIVE_JRE_PATH" />
+      <option name="SUITE_NAME" />
+      <option name="PACKAGE_NAME" />
+      <option name="MAIN_CLASS_NAME" />
+      <option name="METHOD_NAME" />
+      <option name="GROUP_NAME" />
+      <option name="TEST_OBJECT" value="CLASS" />
+      <option name="VM_PARAMETERS" value="-ea" />
+      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
+      <option name="OUTPUT_DIRECTORY" />
+      <option name="PASS_PARENT_ENVS" value="true" />
+      <option name="TEST_SEARCH_SCOPE">
+        <value defaultName="singleModule" />
+      </option>
+      <option name="USE_DEFAULT_REPORTERS" value="false" />
+      <option name="PROPERTIES_FILE" />
       <properties />
       <listeners />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
     </configuration>
     <list>
       <item itemvalue="Spring Boot.App" />
       <item itemvalue="JUnit.QueryTest" />
-      <item itemvalue="JUnit.TestRegisterEnrollUser" />
       <item itemvalue="JUnit.TestEnrollAdmin" />
+      <item itemvalue="JUnit.ChaincodeTransactionTest" />
       <item itemvalue="JUnit.QueryChannelTest" />
       <item itemvalue="JUnit.QueryRegisterTest" />
     </list>
@@ -614,13 +669,13 @@
     <option name="totallyTimeSpent" value="44454000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="-8" y="-8" width="2576" height="1416" extended-state="6" />
+    <frame x="-8" y="-8" width="1936" height="1056" extended-state="6" />
     <layout>
       <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.28338632" />
       <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info id="Designer" order="2" />
-      <window_info id="Image Layers" order="3" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
       <window_info id="UI Designer" order="4" />
+      <window_info anchor="right" id="Theme Preview" order="7" />
       <window_info id="Favorites" order="5" side_tool="true" />
       <window_info id="Learn" order="6" />
       <window_info id="Web" order="7" side_tool="true" />
@@ -629,26 +684,17 @@
       <window_info anchor="bottom" id="Find" order="1" />
       <window_info anchor="bottom" id="Run" order="2" sideWeight="0.8390302" weight="0.5210608" />
       <window_info anchor="bottom" id="Debug" order="3" sideWeight="0.71510416" weight="0.3995749" />
-      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Spring" order="12" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
-      <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="bottom" id="Terminal" order="7" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Messages" order="8" />
       <window_info anchor="bottom" id="Database Changes" order="9" show_stripe_button="false" />
       <window_info anchor="bottom" id="Version Control" order="10" />
       <window_info anchor="bottom" id="Event Log" order="11" sideWeight="0.1609698" side_tool="true" visible="true" weight="0.5210608" />
       <window_info anchor="bottom" id="Spring" order="12" />
       <window_info anchor="bottom" id="Java Enterprise" order="13" />
-      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
-      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
-      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
-      <window_info anchor="right" id="Palette" order="3" />
-      <window_info anchor="right" id="Capture Analysis" order="4" />
-      <window_info anchor="right" id="Database" order="5" />
-      <window_info anchor="right" id="Palette&#9;" order="6" />
-      <window_info anchor="right" id="Theme Preview" order="7" />
-      <window_info anchor="right" id="Bean Validation" order="8" />
-      <window_info anchor="right" id="Maven Projects" order="9" />
+      <window_info anchor="bottom" id="Find" order="1" />
     </layout>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -670,6 +716,76 @@
     </breakpoint-manager>
   </component>
   <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/client/ChannelClientWrapper.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="748">
+          <caret line="44" selection-start-line="44" selection-end-line="44" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://$MAVEN_REPOSITORY$/org/hyperledger/fabric-sdk-java/fabric-sdk-java/1.2.1/fabric-sdk-java-1.2.1.jar!/org/hyperledger/fabric/sdk/HFClient.class">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="833">
+          <caret line="49" lean-forward="true" selection-start-line="49" selection-end-line="49" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/client/FabricClientWrapper.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="136">
+          <caret line="19" selection-start-line="19" selection-end-line="19" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/query/QueryChannelTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="272">
+          <caret line="25" column="74" lean-forward="true" selection-start-line="25" selection-start-column="74" selection-end-line="25" selection-end-column="74" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/configuration/Config.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="493">
+          <caret line="29" column="39" selection-start-line="29" selection-start-column="31" selection-end-line="29" selection-end-column="39" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/query/QueryTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="493">
+          <caret line="29" column="50" selection-start-line="29" selection-start-column="50" selection-end-line="29" selection-end-column="50" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/client/TestEnrollAdmin.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="374">
+          <caret line="22" lean-forward="true" selection-start-line="22" selection-end-line="22" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/client/TestRegisterEnrollUser.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="272">
+          <caret line="20" column="45" lean-forward="true" selection-start-line="20" selection-start-column="45" selection-end-line="20" selection-end-column="45" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/configuration/Config.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="102">
+          <caret line="6" column="45" selection-start-line="6" selection-start-column="45" selection-end-line="6" selection-end-column="45" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/pom.xml">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="289">
+          <caret line="17" column="10" lean-forward="true" selection-start-line="17" selection-start-column="10" selection-end-line="17" selection-end-column="10" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/java-api.iml" />
     <entry file="file://$PROJECT_DIR$/.idea/misc.xml">
       <provider selected="true" editor-type-id="text-editor" />
@@ -701,6 +817,27 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/utility/Util.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="391">
+          <caret line="23" column="23" selection-start-line="23" selection-start-column="23" selection-end-line="23" selection-end-column="23" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/user/UserContext.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="408">
+          <caret line="30" column="16" selection-start-line="30" selection-start-column="16" selection-end-line="30" selection-end-column="16" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/utility/ReadUserTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="255">
+          <caret line="15" column="52" selection-start-line="15" selection-start-column="52" selection-end-line="15" selection-end-column="52" />
+        </state>
+      </provider>
+    </entry>
     <entry file="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/org/junit/runners/model/FrameworkMethod.class">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="421">
@@ -730,62 +867,59 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/blockchain/client/CAClientWrapper.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/client/TestRegisterEnrollUser.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="46">
-          <caret line="45" column="23" selection-start-line="45" selection-start-column="23" selection-end-line="45" selection-end-column="23" />
+        <state relative-caret-position="289">
+          <caret line="24" column="48" selection-start-line="24" selection-start-column="48" selection-end-line="24" selection-end-column="48" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/restImplementation/UserLoggerTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="306">
-          <caret line="22" column="9" lean-forward="true" selection-start-line="22" selection-start-column="9" selection-end-line="22" selection-end-column="9" />
+        <state relative-caret-position="238">
+          <caret line="21" column="24" lean-forward="true" selection-start-line="21" selection-start-column="24" selection-end-line="21" selection-end-column="24" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/queryWrapper/QueryWrapperTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="187">
+          <caret line="15" column="45" selection-start-line="15" selection-start-column="45" selection-end-line="15" selection-end-column="45" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/blockchain/query/ChaincodeTransactionTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="578">
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