transaction class completed

.idea/libraries/Maven__bouncycastle_bcprov_jdk15_136.xml

@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Maven: bouncycastle:bcprov-jdk15:136">
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/bouncycastle/bcprov-jdk15/136/bcprov-jdk15-136.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/bouncycastle/bcprov-jdk15/136/bcprov-jdk15-136-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/bouncycastle/bcprov-jdk15/136/bcprov-jdk15-136-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/libraries/Maven__org_ow2_util_bundles_bouncycastle_java5_136_1_0_0.xml

@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Maven: org.ow2.util.bundles:bouncycastle-java5-136:1.0.0">
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/ow2/util/bundles/bouncycastle-java5-136/1.0.0/bouncycastle-java5-136-1.0.0.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/org/ow2/util/bundles/bouncycastle-java5-136/1.0.0/bouncycastle-java5-136-1.0.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/ow2/util/bundles/bouncycastle-java5-136/1.0.0/bouncycastle-java5-136-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/workspace.xml

@@ -2,7 +2,22 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="15cb9d44-2114-4e87-9e35-a3d14b1a4bbd" name="Default" comment="">
+      <change afterPath="$PROJECT_DIR$/.idea/libraries/Maven__bouncycastle_bcprov_jdk15_136.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_ow2_util_bundles_bouncycastle_java5_136_1_0_0.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/0.1.iml" beforeDir="false" afterPath="$PROJECT_DIR$/0.1.iml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/pom.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Block.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Block.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Blockchain.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Blockchain.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Transaction.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Transaction.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Wallet.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Wallet.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/Encryption.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/Encryption.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionInput.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionInput.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionOutput.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionOutput.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/classes/com/buecoin01/ProcessLoader.class" beforeDir="false" afterPath="$PROJECT_DIR$/target/classes/com/buecoin01/ProcessLoader.class" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/classes/com/buecoin01/model/Blockchain.class" beforeDir="false" afterPath="$PROJECT_DIR$/target/classes/com/buecoin01/model/Blockchain.class" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/classes/com/buecoin01/model/Wallet.class" beforeDir="false" afterPath="$PROJECT_DIR$/target/classes/com/buecoin01/model/Wallet.class" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/target/classes/com/buecoin01/utility/Encryption.class" beforeDir="false" afterPath="$PROJECT_DIR$/target/classes/com/buecoin01/utility/Encryption.class" afterDir="false" />
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     <ignored path="$PROJECT_DIR$/target/" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
@@ -17,22 +32,26 @@
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         <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Wallet.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="105">
-              <caret line="7" column="13" selection-start-line="7" selection-start-column="13" selection-end-line="7" selection-end-column="13" />
+            <state relative-caret-position="1695">
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               <folding>
                 <element signature="imports" expanded="true" />
                 <element signature="e#549#550#0" expanded="true" />
                 <element signature="e#571#572#0" expanded="true" />
+                <element signature="e#669#670#0" expanded="true" />
+                <element signature="e#702#703#0" expanded="true" />
+                <element signature="e#841#842#0" expanded="true" />
+                <element signature="e#873#874#0" expanded="true" />
               </folding>
             </state>
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="Transaction.java" pinned="false" current-in-tab="true">
+      <file leaf-file-name="Transaction.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Transaction.java">
           <provider selected="true" editor-type-id="text-editor">
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-              <caret line="48" column="66" lean-forward="true" selection-start-line="48" selection-start-column="66" selection-end-line="48" selection-end-column="66" />
+            <state relative-caret-position="318">
+              <caret line="117" column="26" lean-forward="true" selection-start-line="117" selection-start-column="26" selection-end-line="117" selection-end-column="26" />
               <folding>
                 <element signature="imports" expanded="true" />
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@@ -43,8 +62,20 @@
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         <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionInput.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="30">
-              <caret line="2" column="29" selection-start-line="2" selection-start-column="29" selection-end-line="2" selection-end-column="29" />
+            <state relative-caret-position="120">
+              <caret line="8" column="10" selection-start-line="8" selection-start-column="10" selection-end-line="8" selection-end-column="10" />
+              <folding>
+                <element signature="e#237#238#0" expanded="true" />
+                <element signature="e#299#300#0" expanded="true" />
+                <element signature="e#556#557#0" expanded="true" />
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+                <element signature="e#799#800#0" expanded="true" />
+                <element signature="e#850#851#0" expanded="true" />
+                <element signature="e#882#883#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
@@ -52,18 +83,38 @@
       <file leaf-file-name="TransactionOutput.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionOutput.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="30">
-              <caret line="2" column="30" selection-start-line="2" selection-start-column="30" selection-end-line="2" selection-end-column="30" />
+            <state relative-caret-position="314">
+              <caret line="25" column="38" lean-forward="true" selection-start-line="25" selection-start-column="38" selection-end-line="25" selection-end-column="38" />
+              <folding>
+                <element signature="e#651#652#0" expanded="true" />
+                <element signature="e#676#677#0" expanded="true" />
+                <element signature="e#712#713#0" expanded="true" />
+                <element signature="e#740#741#0" expanded="true" />
+                <element signature="e#813#814#0" expanded="true" />
+                <element signature="e#868#869#0" expanded="true" />
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+                <element signature="e#943#944#0" expanded="true" />
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+                <element signature="e#1134#1135#0" expanded="true" />
+                <element signature="e#1204#1205#0" expanded="true" />
+                <element signature="e#1266#1267#0" expanded="true" />
+                <element signature="e#717#718#0" expanded="true" />
+                <element signature="e#762#763#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
       </file>
-      <file leaf-file-name="Encryption.java" pinned="false" current-in-tab="false">
+      <file leaf-file-name="Encryption.java" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/Encryption.java">
           <provider selected="true" editor-type-id="text-editor">
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-              <caret line="30" column="32" lean-forward="true" selection-start-line="30" selection-start-column="32" selection-end-line="30" selection-end-column="32" />
+            <state relative-caret-position="510">
+              <caret line="36" column="5" lean-forward="true" selection-start-line="36" selection-start-column="5" selection-end-line="36" selection-end-column="5" />
               <folding>
+                <element signature="imports" expanded="true" />
                 <element signature="e#1683#1684#0" expanded="true" />
                 <element signature="e#1724#1725#0" expanded="true" />
               </folding>
@@ -71,11 +122,27 @@
           </provider>
         </entry>
       </file>
+      <file leaf-file-name="Block.java" pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Block.java">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="567">
+              <caret line="50" lean-forward="true" selection-start-line="50" selection-end-line="50" />
+            </state>
+          </provider>
+        </entry>
+      </file>
       <file leaf-file-name="Blockchain.java" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Blockchain.java">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="55">
-              <caret line="9" column="13" selection-start-line="9" selection-start-column="13" selection-end-line="9" selection-end-column="13" />
+            <state relative-caret-position="162">
+              <caret line="17" column="6" selection-start-line="17" selection-start-column="6" selection-end-line="17" selection-end-column="6" />
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+                <element signature="e#1741#1742#0" expanded="true" />
+                <element signature="e#1814#1815#0" expanded="true" />
+                <element signature="e#1854#1855#0" expanded="true" />
+              </folding>
             </state>
           </provider>
         </entry>
@@ -89,6 +156,11 @@
       </list>
     </option>
   </component>
+  <component name="FindInProjectRecents">
+    <findStrings>
+      <find>applys</find>
+    </findStrings>
+  </component>
   <component name="Git.Settings">
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
   </component>
@@ -102,9 +174,14 @@
   <component name="IdeDocumentHistory">
     <option name="CHANGED_PATHS">
       <list>
-        <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Wallet.java" />
+        <option value="$PROJECT_DIR$/pom.xml" />
         <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/Encryption.java" />
+        <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionOutput.java" />
+        <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionInput.java" />
+        <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Wallet.java" />
         <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Transaction.java" />
+        <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Block.java" />
+        <option value="$PROJECT_DIR$/src/main/java/com/buecoin01/model/Blockchain.java" />
       </list>
     </option>
   </component>
@@ -117,11 +194,10 @@
   <component name="NodePackageJsonFileManager">
     <packageJsonPaths />
   </component>
-  <component name="ProjectFrameBounds">
-    <option name="x" value="-57" />
-    <option name="y" value="-1047" />
-    <option name="width" value="1832" />
-    <option name="height" value="903" />
+  <component name="ProjectFrameBounds" extendedState="6">
+    <option name="y" value="23" />
+    <option name="width" value="1440" />
+    <option name="height" value="812" />
   </component>
   <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
   <component name="ProjectView">
@@ -218,6 +294,17 @@
     </option>
   </component>
   <component name="RunManager">
+    <configuration name="Blockchain" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
+      <option name="MAIN_CLASS_NAME" value="com.buecoin01.model.Blockchain" />
+      <module name="0.1" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="com.buecoin01.model.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+    </configuration>
     <configuration default="true" type="Application" factoryName="Application">
       <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
     </configuration>
@@ -259,6 +346,11 @@
       <properties />
       <listeners />
     </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Application.Blockchain" />
+      </list>
+    </recent_temporary>
   </component>
   <component name="SvnConfiguration">
     <configuration />
@@ -270,16 +362,15 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1532353115597</updated>
-      <workItem from="1532353121145" duration="6982000" />
+      <workItem from="1532353121145" duration="22002000" />
     </task>
     <servers />
   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="6982000" />
+    <option name="totallyTimeSpent" value="22002000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="-57" y="-1047" width="1832" height="903" extended-state="0" />
-    <editor active="true" />
+    <frame x="0" y="23" width="1440" height="812" extended-state="6" />
     <layout>
       <window_info anchor="right" id="Palette" />
       <window_info anchor="bottom" id="Event Log" side_tool="true" />
@@ -293,15 +384,16 @@
       <window_info id="UI Designer" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="TODO" order="6" />
+      <window_info anchor="bottom" id="Messages" />
       <window_info anchor="right" id="Palette&#9;" />
       <window_info id="Image Layers" />
       <window_info anchor="bottom" id="Java Enterprise" />
       <window_info anchor="right" id="Capture Analysis" />
-      <window_info anchor="bottom" id="Run" order="2" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.37062937" />
       <window_info anchor="bottom" id="Version Control" />
       <window_info anchor="bottom" id="Spring" />
-      <window_info anchor="bottom" id="Terminal" visible="true" weight="0.3287841" />
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.19497207" />
+      <window_info anchor="bottom" id="Terminal" weight="0.3287841" />
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.24964234" />
       <window_info anchor="right" id="Bean Validation" />
       <window_info id="Web" side_tool="true" />
       <window_info anchor="right" id="Theme Preview" />
@@ -335,63 +427,120 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Block.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/Repositories/CoinRepository.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="105">
-          <caret line="10" column="13" selection-start-line="10" selection-start-column="13" selection-end-line="10" selection-end-column="13" />
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         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Blockchain.java">
+    <entry file="file://$PROJECT_DIR$/pom.xml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="55">
-          <caret line="9" column="13" selection-start-line="9" selection-start-column="13" selection-end-line="9" selection-end-column="13" />
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       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionInput.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Block.java">
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+          <caret line="50" lean-forward="true" selection-start-line="50" selection-end-line="50" />
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-    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionOutput.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Blockchain.java">
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     <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Wallet.java">
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-    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/Encryption.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Transaction.java">
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-    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/model/Transaction.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionInput.java">
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+            <element signature="e#237#238#0" expanded="true" />
+            <element signature="e#299#300#0" expanded="true" />
+            <element signature="e#556#557#0" expanded="true" />
+            <element signature="e#598#599#0" expanded="true" />
+            <element signature="e#668#669#0" expanded="true" />
+            <element signature="e#730#731#0" expanded="true" />
+            <element signature="e#772#773#0" expanded="true" />
+            <element signature="e#799#800#0" expanded="true" />
+            <element signature="e#850#851#0" expanded="true" />
+            <element signature="e#882#883#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/TransactionOutput.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="356">
-          <caret line="48" column="66" lean-forward="true" selection-start-line="48" selection-start-column="66" selection-end-line="48" selection-end-column="66" />
+        <state relative-caret-position="314">
+          <caret line="25" column="38" lean-forward="true" selection-start-line="25" selection-start-column="38" selection-end-line="25" selection-end-column="38" />
+          <folding>
+            <element signature="e#651#652#0" expanded="true" />
+            <element signature="e#676#677#0" expanded="true" />
+            <element signature="e#712#713#0" expanded="true" />
+            <element signature="e#740#741#0" expanded="true" />
+            <element signature="e#813#814#0" expanded="true" />
+            <element signature="e#868#869#0" expanded="true" />
+            <element signature="e#912#913#0" expanded="true" />
+            <element signature="e#943#944#0" expanded="true" />
+            <element signature="e#971#972#0" expanded="true" />
+            <element signature="e#1012#1013#0" expanded="true" />
+            <element signature="e#1046#1047#0" expanded="true" />
+            <element signature="e#1092#1093#0" expanded="true" />
+            <element signature="e#1134#1135#0" expanded="true" />
+            <element signature="e#1204#1205#0" expanded="true" />
+            <element signature="e#1266#1267#0" expanded="true" />
+            <element signature="e#717#718#0" expanded="true" />
+            <element signature="e#762#763#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/com/buecoin01/utility/Encryption.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="510">
+          <caret line="36" column="5" lean-forward="true" selection-start-line="36" selection-start-column="5" selection-end-line="36" selection-end-column="5" />
           <folding>
             <element signature="imports" expanded="true" />
+            <element signature="e#1683#1684#0" expanded="true" />
+            <element signature="e#1724#1725#0" expanded="true" />
           </folding>
         </state>
       </provider>

0.1.iml

@@ -105,5 +105,7 @@
     <orderEntry type="library" name="Maven: org.springframework:spring-jcl:5.0.7.RELEASE" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.springframework:spring-test:5.0.7.RELEASE" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.xmlunit:xmlunit-core:2.5.1" level="project" />
+    <orderEntry type="library" name="Maven: org.ow2.util.bundles:bouncycastle-java5-136:1.0.0" level="project" />
+    <orderEntry type="library" name="Maven: bouncycastle:bcprov-jdk15:136" level="project" />
   </component>
 </module>

pom.xml

@@ -59,6 +59,11 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+        <dependency>
+            <groupId>org.ow2.util.bundles</groupId>
+            <artifactId>bouncycastle-java5-136</artifactId>
+            <version>1.0.0</version>
+        </dependency>
 	</dependencies>
 
 	<build>

src/main/java/com/buecoin01/model/Block.java

@@ -5,6 +5,7 @@ import com.buecoin01.utility.Encryption;
 
 import javax.persistence.*;
 import java.time.LocalDateTime;
+import java.util.ArrayList;
 
 
 @Entity
@@ -20,13 +21,16 @@ public class Block {
     @Column
     private String hash;
     private String previousHash;
-    private String data;
+    //private String data;
+    public String merkleRoot;
+    public ArrayList<Transaction> transactions = new ArrayList<>();
     private LocalDateTime timeStamp;
     private int nonce;
 
     public Block(String previousHash, LocalDateTime time) {
         this.timeStamp = time;
         this.previousHash = previousHash;
+        this.hash = calculateHash();
     }
 
     public String getHash() {
@@ -37,9 +41,9 @@ public class Block {
         return previousHash;
     }
 
-    public String getData() {
-        return data;
-    }
+//    public String getData() {
+//        return data;
+//    }
 
     public LocalDateTime getTimeStamp() {
         return timeStamp;
@@ -50,7 +54,7 @@ public class Block {
                   previousHash +
                         timeStamp.toString() +
                         Integer.toString(nonce) +
-                        data);
+                        merkleRoot);
     }
 
     public long getId() {
@@ -72,4 +76,19 @@ public class Block {
         System.out.println("You have been awarded 1 Zip!");
         Coin coin = new Coin(minerID);
     }
+
+    //add transactions to this block
+    public boolean addTransaction(Transaction transaction){
+        //process transaction and check if valid, unless block is genesis block then ignore
+        if (transaction == null) return false;
+        if (previousHash != "0"){
+            if (!(transaction.processTransaction())){
+                System.out.println("Transaction failed to process. Discarded.");
+                return false;
+            }
+        }
+        transactions.add(transaction);
+        System.out.println("Transaction Successfully added to the Block!");
+        return true;
+    }
 }

src/main/java/com/buecoin01/model/Blockchain.java

@@ -2,14 +2,42 @@ package com.buecoin01.model;
 
 import com.buecoin01.model.Block;
 import com.buecoin01.utility.Encryption;
+import com.buecoin01.utility.TransactionOutput;
 import com.google.gson.GsonBuilder;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.security.Security;
+import java.util.*;
 
 public class Blockchain {
     private static List<Block> blockchain = new ArrayList<>();
+    private static Map<String, TransactionOutput> UTXOs = new HashMap<>();
+    public static float minimumTransaction = 0.1f;
     private static int difficulty = 5;
+    public static Wallet walletA;
+    public static Wallet walletB;
+    //public static Transaction genesisTransaction;
+
+    public static void main(String[] args) {
+        //Setup Bouncey castle as a Security Provider
+        Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
+
+        //Create the new wallets
+        walletA = new Wallet();
+        walletB = new Wallet();
+
+        //Test public and private keys
+        System.out.println("Private and public keys:");
+        System.out.println(Encryption.getStringFromKey(walletA.getPrivateKey()));
+        System.out.println(Encryption.getStringFromKey(walletA.getPublicKey()));
+        //Create a test transaction from WalletA to walletB
+        Transaction transaction = new Transaction(walletA.getPublicKey(), walletB.getPublicKey(), 5, null);
+        transaction.generateSignature(walletA.getPrivateKey());
+
+        //Verify the signature works and verify it from the public key
+        System.out.println("Is signature verified");
+        System.out.println(transaction.verifySignature());
+
+    }
 
     public String chainToJson() {
         return new GsonBuilder()
@@ -18,6 +46,14 @@ public class Blockchain {
                 .toJson(blockchain);
     }
 
+    public static Map<String, TransactionOutput> getUTXOs() {
+        return UTXOs;
+    }
+
+    public static void setUTXOs(Map<String, TransactionOutput> UTXOs) {
+        Blockchain.UTXOs = UTXOs;
+    }
+
     public static List<Block> getBlockchain() {
         return blockchain;
     }

src/main/java/com/buecoin01/model/Transaction.java

@@ -13,6 +13,8 @@ public class Transaction {
     private String transactionId; //hash of the transaction
     private PublicKey sender;
     private PublicKey reciepient;
+    private String senderName;
+    private String reciepientName;
     private float value;
     private byte[] signature;
 
@@ -49,4 +51,70 @@ public class Transaction {
         String data = Encryption.getStringFromKey(sender) + Encryption.getStringFromKey(reciepient) + Float.toString(value);
         return Encryption.verifyECDSASig(sender, data, signature);
     }
+
+    //Check if transaction can be created
+    public boolean processTransaction() {
+        if (!verifySignature()) {
+            System.out.println("Transaction Signature failed to verify");
+            return false;
+        }
+
+        //gather transaction inputs to make sure they're unspent
+        for (TransactionInput i : inputs) {
+           i.setUTXO(Blockchain.getUTXOs().get(i.getTransactionOutputId()));
+
+        }
+        //check if transaction is valid
+        if(getInputsValue()< Blockchain.minimumTransaction){
+            System.out.println("Transaction Input to small: " + getInputsValue());
+            return false;
+        }
+        //add outputs to Unspent list
+        for (TransactionOutput o : outputs){
+            Blockchain.getUTXOs().put(o.getId(),o);
+        }
+        //remove transaction inputs from UXTO lists as spent
+        for(TransactionInput i :inputs){
+            if(i.getUTXO() == null) continue; // if Transaction cant be found, skip
+            Blockchain.getUTXOs().remove(i.getUTXO().getId());
+        }
+        return true;
+    }
+
+        // returns sum of inputs(UXTOs) values
+    public float getInputsValue(){
+        float total = 0;
+        for(TransactionInput i : inputs){
+            if(i.getUTXO() == null) continue; // if Transaction cant be found, skip
+            total= total + i.getUTXO().getValue();
+        }
+        return total;
+    }
+
+    public float getOutPutsValue(){
+        float total = 0;
+        for(TransactionOutput o : outputs){
+            total = total + o.getValue();
+        }
+        return total;
+    }
+    // tacks in array of transactions and returns a merkle root
+    public static  String getMerkleRoot(ArrayList<Transaction> transactions){
+        int count = transactions.size();
+        ArrayList<String> previousTreeLayer = new ArrayList<>();
+        for(Transaction transaction: transactions){
+            previousTreeLayer.add(transaction.transactionId);
+        }
+        ArrayList<String> treeLayer = previousTreeLayer;
+        while(count > 1){
+            treeLayer = new ArrayList<>();
+            for(int i = 1; i < previousTreeLayer.size();i++){
+             treeLayer.add(Encryption.applySha256(previousTreeLayer.get(i-1)) + previousTreeLayer.get(i));
+            }
+            count = treeLayer.size();
+            previousTreeLayer = treeLayer;
+        }
+        String merkleRoot = (treeLayer.size() == 1) ? treeLayer.get(0) : "";
+        return merkleRoot;
+    }
 }

src/main/java/com/buecoin01/model/Wallet.java

@@ -1,14 +1,21 @@
 package com.buecoin01.model;
 
+import com.buecoin01.utility.TransactionInput;
+import com.buecoin01.utility.TransactionOutput;
+
 import javax.persistence.*;
 import java.security.*;
 import java.security.spec.ECGenParameterSpec;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
 
 @Entity
 public class Wallet {
 
     private PrivateKey privateKey;
     private PublicKey publicKey;
+    public HashMap<String, TransactionOutput> UTXOs = new HashMap<>(); // only UTXOs owned by this wallet
     @Id
     @Column(name = "id")
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -28,6 +35,15 @@ public class Wallet {
     public Wallet() {
         generateKeyPair();
     }
+
+    public PrivateKey getPrivateKey() {
+        return privateKey;
+    }
+
+    public PublicKey getPublicKey() {
+        return publicKey;
+    }
+
     public long getAmount() {
         return amount;
     }
@@ -68,4 +84,43 @@ public class Wallet {
             throw new RuntimeException(e);
         }
     }
+    //returns balance and store the UTXO's owned by this wallet in this.UXTOs
+    public float getBalance(){
+        float total = 0;
+        for (Map.Entry<String, TransactionOutput> item: Blockchain.getUTXOs().entrySet()){
+            TransactionOutput UTXO = item.getValue();
+            if (UTXO.isMine(publicKey)){ //if output belongs to me (if coins belong to me)
+                UTXOs.put(UTXO.getId(), UTXO);   // add it to our list of unspent transaction
+                total = total + UTXO.getValue();
+
+            }
+        }
+        return total;
+    }
+
+    //generates and returns a new transaction from this wallet
+
+
+    public Transaction sendFunds(PublicKey _recipient, float value){
+        if(getBalance() < value) {  //gather balance and check funds
+            System.out.println("Not Enough Funds. Transaction Discarded.");
+            return null;
+       }
+
+       // create arraylist of inputs
+        ArrayList<TransactionInput> inputs = new ArrayList<>();
+        float total = 0;
+        for(Map.Entry<String, TransactionOutput> item: UTXOs.entrySet()){
+            TransactionOutput UTXO = item.getValue();
+            total= total + UTXO.getValue();
+            inputs.add(new TransactionInput(UTXO.getId()));
+            if (total > value) break;
+        }
+        Transaction newTransaction = new Transaction(publicKey, _recipient,value, inputs);
+        newTransaction.generateSignature(privateKey);
+        for (TransactionInput input : inputs){
+            UTXOs.remove(input.getTransactionOutputId());
+        }
+        return newTransaction;
+    }
 }

src/main/java/com/buecoin01/utility/Encryption.java

@@ -23,7 +23,7 @@ public class Encryption {
     //Apply ECDSA Signature and return result as bytes
     public static byte[] applyECDSASig(PrivateKey privateKey, String input) {
         Signature dsa;
-        byte[] realSig = new byte[0];
+        byte[] realSig;
         try {
             dsa = Signature.getInstance("ECDSA","BC");
             dsa.initSign(privateKey);

src/main/java/com/buecoin01/utility/TransactionInput.java

@@ -1,4 +1,30 @@
 package com.buecoin01.utility;
 
+
+//This class will be used to reference TransactionOutputs that have not yet been spent.
+//The transactionOutputId will be used to find the relevant TransactionOutput, allowing miners to check your ownership.
 public class TransactionInput {
-}
+    private String transactionOutputId;
+   // private TransactionOutput UTXO; // UTXO means Unspent Transaction Outputs
+   private TransactionOutput UTXO;
+
+    public TransactionInput(String transactionOutputId) {
+        this.transactionOutputId = transactionOutputId;
+    }
+
+    public String getTransactionOutputId() {
+        return transactionOutputId;
+    }
+
+    public void setTransactionOutputId(String transactionOutputId) {
+        this.transactionOutputId = transactionOutputId;
+    }
+
+    public TransactionOutput getUTXO() {
+        return UTXO;
+    }
+
+    public void setUTXO(TransactionOutput UTXO) {
+        this.UTXO = UTXO;
+    }
+}

src/main/java/com/buecoin01/utility/TransactionOutput.java

@@ -1,4 +1,54 @@
 package com.buecoin01.utility;
 
+import java.security.PublicKey;
+
 public class TransactionOutput {
+    private String id;
+    private PublicKey reciepient; //new owner of the coins
+    private float value; //the amount of coins they own
+    private String parentTransactionId;
+
+    public TransactionOutput(PublicKey reciepient, float value, String parentTransactionId) {
+        this.reciepient = reciepient;
+        this.value = value;
+        this.parentTransactionId = parentTransactionId;
+        this.id = Encryption.applySha256(Encryption.getStringFromKey(reciepient)+Float.toString(value)+parentTransactionId);
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public PublicKey getReciepient() {
+        return reciepient;
+    }
+
+    public void setReciepient(PublicKey reciepient) {
+        this.reciepient = reciepient;
+    }
+
+    public float getValue() {
+        return value;
+    }
+
+    public void setValue(float value) {
+        this.value = value;
+    }
+
+    public String getParentTransactionId() {
+        return parentTransactionId;
+    }
+
+    public void setParentTransactionId(String parentTransactionId) {
+        this.parentTransactionId = parentTransactionId;
+    }
+
+    //Check if coin belongs to publicKey
+    public boolean isMine(PublicKey publicKey) {
+        return publicKey == reciepient;
+    }
 }