diff --git a/.idea/fastRequestCollection.xml b/.idea/fastRequestCollection.xml
new file mode 100644
index 0000000..a433492
--- /dev/null
+++ b/.idea/fastRequestCollection.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="fastRequestCollection">
+    <option name="detail">
+      <CollectionDetail>
+        <option name="childList">
+          <list>
+            <CollectionDetail>
+              <option name="groupId" value="1" />
+              <option name="id" value="1" />
+              <option name="name" value="Default Group" />
+              <option name="type" value="1" />
+            </CollectionDetail>
+          </list>
+        </option>
+        <option name="groupId" value="-1" />
+        <option name="id" value="0" />
+        <option name="name" value="Root" />
+        <option name="type" value="1" />
+      </CollectionDetail>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/download/0fc64d0f-db44-4c73-ad9c-39ab067711be_FROM_0fc64d0f-db44-4c73-ad9c-39ab067711be_1.a b/download/0fc64d0f-db44-4c73-ad9c-39ab067711be_FROM_0fc64d0f-db44-4c73-ad9c-39ab067711be_1.a
deleted file mode 100644
index c89a354..0000000
--- a/download/0fc64d0f-db44-4c73-ad9c-39ab067711be_FROM_0fc64d0f-db44-4c73-ad9c-39ab067711be_1.a
+++ /dev/null
@@ -1,5 +0,0 @@
-hahaha
-================
-This File is 1.a
-================
-
diff --git a/download/50dfcced-c877-458f-ae45-0a50108c168c_FROM_a082b40f-9a6d-43d6-ae96-a2be5c27d1e8_2.a b/download/50dfcced-c877-458f-ae45-0a50108c168c_FROM_a082b40f-9a6d-43d6-ae96-a2be5c27d1e8_2.a
deleted file mode 100644
index c48b607..0000000
--- a/download/50dfcced-c877-458f-ae45-0a50108c168c_FROM_a082b40f-9a6d-43d6-ae96-a2be5c27d1e8_2.a
+++ /dev/null
@@ -1,5 +0,0 @@
-2222222222222222
-================
-This File is 2.a
-================
-
diff --git a/download/9d4c75d4-aad6-4dc4-8232-45416137b9eb_FROM_efdbfa0f-3e0f-40e8-b244-73530e9513f3_123.db b/download/9d4c75d4-aad6-4dc4-8232-45416137b9eb_FROM_efdbfa0f-3e0f-40e8-b244-73530e9513f3_123.db
deleted file mode 100644
index 1ade662..0000000
Binary files a/download/9d4c75d4-aad6-4dc4-8232-45416137b9eb_FROM_efdbfa0f-3e0f-40e8-b244-73530e9513f3_123.db and /dev/null differ
diff --git a/download/ce3e0168-2bb4-4499-bd90-ee3d6bb59043_FROM_ce3e0168-2bb4-4499-bd90-ee3d6bb59043_1.a b/download/ce3e0168-2bb4-4499-bd90-ee3d6bb59043_FROM_ce3e0168-2bb4-4499-bd90-ee3d6bb59043_1.a
deleted file mode 100644
index c89a354..0000000
--- a/download/ce3e0168-2bb4-4499-bd90-ee3d6bb59043_FROM_ce3e0168-2bb4-4499-bd90-ee3d6bb59043_1.a
+++ /dev/null
@@ -1,5 +0,0 @@
-hahaha
-================
-This File is 1.a
-================
-
diff --git a/img.png b/img.png
deleted file mode 100644
index ea84bfa..0000000
Binary files a/img.png and /dev/null differ
diff --git a/src/main/java/com/echo/p2p_project/Util.java b/src/main/java/com/echo/p2p_project/Util.java
index 11de37c..edf8771 100644
--- a/src/main/java/com/echo/p2p_project/Util.java
+++ b/src/main/java/com/echo/p2p_project/Util.java
@@ -1,10 +1,12 @@
 package com.echo.p2p_project;
 
-import java.io.OutputStream;
-import java.io.PrintStream;
+import javax.xml.bind.annotation.adapters.HexBinaryAdapter;
+import java.io.*;
 import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
 
 /**
  * @Author: WangYuyang
@@ -25,5 +27,32 @@ public class Util {
             return null;
         }
     }
+    public static String createSha1(File file){
+        MessageDigest digest = null;
+        try {
+            digest = MessageDigest.getInstance("SHA-1");
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        InputStream fis = null;
+        try {
+            fis = new FileInputStream(file);
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+        int n = 0;
+        byte[] buffer = new byte[8192];
+        while (n != -1) {
+            try {
+                n = fis.read(buffer);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            if (n > 0) {
+                digest.update(buffer, 0, n);
+            }
+        }
+        return new HexBinaryAdapter().marshal(digest.digest());
+    }
 
 }
diff --git a/src/main/java/com/echo/p2p_project/client/ClientMain.java b/src/main/java/com/echo/p2p_project/client/ClientMain.java
index 47e3d30..4eec360 100644
--- a/src/main/java/com/echo/p2p_project/client/ClientMain.java
+++ b/src/main/java/com/echo/p2p_project/client/ClientMain.java
@@ -110,7 +110,7 @@ public class ClientMain {
 
     private static void download(String file_name_to_download, Integer retry_count) {
         if (download_retry_count <= 5) {
-            download_retry_count+=1;
+            download_retry_count += 1;
             System.out.println("Retrying " + download_retry_count);
             HashMap resources = look_up_file(file_name_to_download);
             try {
@@ -119,7 +119,7 @@ public class ClientMain {
                 e.printStackTrace();
             }
             download(resources);
-        }else{
+        } else {
             System.out.println("Give up download.");
             return;
         }
@@ -209,6 +209,8 @@ public class ClientMain {
 
     private static Boolean reg_file(String name) {
         File file = new File("res/" + name);
+        String hash = Util.createSha1(file);
+        System.out.println(hash);
         if (!file.exists()) {
             System.out.println("File not exists !");
             System.out.println("This File is not exist in your file system !");
@@ -218,7 +220,7 @@ public class ClientMain {
             System.out.println("File length: " + file.length());
         }
         try {
-            Resource resource = constructRegistry.ConstructResource(peer.getGUID(), name);
+            Resource resource = constructRegistry.ConstructResource(peer.getGUID(), name, hash);
             ClientMain.DHRT.put(resource.getGUID(), resource);
             DHRT.put(resource.getGUID(), resource);
             System.out.println("File Register Success!");
@@ -295,13 +297,53 @@ public class ClientMain {
             for (Resource r : resources.values()) {
                 System.out.println(r);
             }
-            System.out.println("Please specify the GUID of the resource: ");
+            System.out.println("Checking file hashing...");
+            Boolean hash_all_same = true;
+            String file_hash = ((Resource) resources.values().toArray()[0]).getHash();
+            for (Resource r : resources.values()) {
+                if (!r.getHash().equals(file_hash)) {
+                    hash_all_same = false;
+                    break;
+                }
+            }
             UUID GUID = null;
-            try {
-                GUID = UUID.fromString(sc.nextLine());
-            } catch (IllegalArgumentException e) {
-                System.out.println("UUID Error");
-                return;
+            if (hash_all_same) {
+                System.out.println("Hash is the same, looking for best node...");
+                ArrayList<Peer> processed_peers = new ArrayList<>();
+                for (Resource r : resources.values()) {
+                    for (Peer p : r.possessedBy.values()) {
+                        processed_peers.add(p);
+                    }
+                }
+                processed_peers.sort(new Comparator<Peer>() {
+                    @Override
+                    public int compare(Peer o1, Peer o2) {
+                        return o1.getRoutingMetric() - o2.getRoutingMetric();
+                    }
+                });
+                for (Peer p : processed_peers) {
+                    System.out.println(p.getGUID().toString()+"  <>  " + p.getRoutingMetric());
+                }
+
+                for (Resource r : processed_peers.get(0).possessing.values()) {
+                    System.out.println("File hash: " + file_hash);
+                    System.out.println("Res hash : " + r.getHash());
+                    if (r.getHash().equals(file_hash)) {
+                        System.out.println("Best resource GUID: " + r.getGUID());
+                        GUID = r.getGUID();
+                        break;
+                    }
+                }
+
+            } else {
+                System.out.println("The hash of these files is different, you need to specify the GUID");
+                System.out.println("Please specify the GUID of the resource: ");
+                try {
+                    GUID = UUID.fromString(sc.nextLine());
+                } catch (IllegalArgumentException e) {
+                    System.out.println("UUID Error");
+                    return;
+                }
             }
             if (GUID == null) {
                 System.out.println("UUID Error");
@@ -330,7 +372,7 @@ public class ClientMain {
         File file = null;
         try {
             p2pRegistry = LocateRegistry.getRegistry(IP, port);
-            System.out.println("Try to connect:   "+ p.getGUID());
+            System.out.println("Try to connect:   " + p.getGUID());
             P2P_FileRegistry p2PFileRegistry = (P2P_FileRegistry) p2pRegistry.lookup("p2PFileRegistry");
             System.out.println("Connected.");
             System.out.println("Downloading FROM: " + p.getGUID());
diff --git a/src/main/java/com/echo/p2p_project/server/gui/ServerIndexController.java b/src/main/java/com/echo/p2p_project/server/gui/ServerIndexController.java
index 3919a81..151fe3d 100644
--- a/src/main/java/com/echo/p2p_project/server/gui/ServerIndexController.java
+++ b/src/main/java/com/echo/p2p_project/server/gui/ServerIndexController.java
@@ -10,6 +10,8 @@ import javafx.beans.value.ObservableValue;
 import javafx.collections.MapChangeListener;
 import javafx.collections.ObservableList;
 import javafx.event.ActionEvent;
+import javafx.scene.chart.BarChart;
+import javafx.scene.chart.XYChart;
 import javafx.scene.control.*;
 import javafx.util.Callback;
 
@@ -34,6 +36,9 @@ public class ServerIndexController {
     public TableColumn<Peer, String> UHPT_PORT;
     public TableColumn<Resource, String> UHRT_GUID;
     public TableColumn<Resource, String> UHRT_NAME;
+    public BarChart bar_chart;
+    public TableColumn<Resource, String> UHRT_HASH;
+    XYChart.Series bar_data = new XYChart.Series();
 
 
     public void initialize() {
@@ -67,6 +72,14 @@ public class ServerIndexController {
                 return new SimpleStringProperty(param.getValue().getName().toString());
             }
         });
+        UHRT_HASH.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Resource, String>, ObservableValue<String>>() {
+            @Override
+            public ObservableValue<String> call(TableColumn.CellDataFeatures<Resource, String> param) {
+                return new SimpleStringProperty(param.getValue().getHash().toString());
+            }
+        });
+
+        bar_chart.getData().add(bar_data);
 
         ServerMain.UHPT.addListener(new MapChangeListener() {
             @Override
@@ -83,7 +96,6 @@ public class ServerIndexController {
                         ObservableList<Peer> peers = new ObservableListWrapper<Peer>(new ArrayList<>(ServerMain.UHPT.values()));
                         uhpt_table.setItems(peers);
 
-
                         //update tree
                         TreeItem<String> rootItem = new TreeItem<String>("Server");
                         rootItem.setExpanded(true);
@@ -98,6 +110,11 @@ public class ServerIndexController {
 
                         }
                         uhrt_tree.setRoot(rootItem);
+
+                        //
+                        setBarChartData();
+
+
                     }
                 });
 
@@ -133,6 +150,10 @@ public class ServerIndexController {
                         }
                         uhrt_tree.setRoot(rootItem);
 
+                        //
+                        setBarChartData();
+
+
                     }
                 });
             }
@@ -141,6 +162,24 @@ public class ServerIndexController {
 
     }
 
+    private void setBarChartData() {
+        for (int i = 0; i < ServerMain.UHPT.values().size(); i++) {
+            Peer p = (Peer) ServerMain.UHPT.values().toArray()[i];
+            Boolean contains = false;
+            for (Object d : bar_data.getData()) {
+                XYChart.Data data = (XYChart.Data) d;
+                System.out.println(data.getXValue().toString());
+                if (data.getXValue().toString().equals(p.getGUID().toString().substring(0, 4))) {
+                    data.setYValue(p.possessing.size());
+                    contains = true;
+                }
+            }
+            if (!contains)
+                bar_data.getData().add(new XYChart.Data<>(p.getGUID().toString().substring(0, 4), p.possessing.size()));
+        }
+        System.out.println(bar_chart.getData());
+    }
+
     public void StartServerButtonPressed(ActionEvent actionEvent) {
         ServerIndexApplication.init_server();
 
diff --git a/src/main/java/com/echo/p2p_project/server/interfaces/ConstructRegistry.java b/src/main/java/com/echo/p2p_project/server/interfaces/ConstructRegistry.java
index 18524c6..13ebd20 100644
--- a/src/main/java/com/echo/p2p_project/server/interfaces/ConstructRegistry.java
+++ b/src/main/java/com/echo/p2p_project/server/interfaces/ConstructRegistry.java
@@ -16,5 +16,5 @@ import java.util.UUID;
  **/
 public interface ConstructRegistry extends Remote {
     Peer ConstructPeer(String name, String IP, Integer P2P_port) throws RemoteException;
-    Resource ConstructResource(UUID PeerGUID, String name) throws RemoteException;
+    Resource ConstructResource(UUID PeerGUID, String name, String hash) throws RemoteException;
 }
diff --git a/src/main/java/com/echo/p2p_project/server/model/ConstructImpl.java b/src/main/java/com/echo/p2p_project/server/model/ConstructImpl.java
index 7f43693..46996b8 100644
--- a/src/main/java/com/echo/p2p_project/server/model/ConstructImpl.java
+++ b/src/main/java/com/echo/p2p_project/server/model/ConstructImpl.java
@@ -53,7 +53,7 @@ public class ConstructImpl extends UnicastRemoteObject implements ConstructRegis
     }
 
     @Override
-    public Resource ConstructResource(UUID PeerGUID, String name) throws RemoteException {
+    public Resource ConstructResource(UUID PeerGUID, String name, String hash) throws RemoteException {
         Peer peer = ServerMain.UHPT.get(PeerGUID);
 
         //If peer not registered in center
@@ -69,7 +69,7 @@ public class ConstructImpl extends UnicastRemoteObject implements ConstructRegis
         }
 
         String ResName = name;
-        Resource res = new Resource(GUID, ResName);
+        Resource res = new Resource(GUID, ResName, hash);
         res.possessedBy.put(peer.getGUID(), peer);
         ServerMain.UHRT.put(res.getGUID(), res);
         ServerMain.UHPT.get(peer.getGUID()).possessing.put(res.getGUID(), res);
diff --git a/src/main/java/com/echo/p2p_project/u_model/Resource.java b/src/main/java/com/echo/p2p_project/u_model/Resource.java
index 9fbb097..6855835 100644
--- a/src/main/java/com/echo/p2p_project/u_model/Resource.java
+++ b/src/main/java/com/echo/p2p_project/u_model/Resource.java
@@ -1,5 +1,7 @@
 package com.echo.p2p_project.u_model;
 
+import cn.hutool.core.lang.hash.Hash128;
+
 import java.io.Serializable;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
@@ -16,12 +18,19 @@ public class Resource implements Serializable {
     private UUID GUID;
     private String name;
     public HashMap<UUID, Peer> possessedBy = new LinkedHashMap<>();
+    public String hash;
 
     public Resource(UUID GUID, String name) {
         this.GUID = GUID;
         this.name = name;
     }
 
+    public Resource(UUID GUID, String name, String hash) {
+        this.GUID = GUID;
+        this.name = name;
+        this.hash = hash;
+    }
+
     public UUID getGUID() {
         return GUID;
     }
@@ -46,12 +55,21 @@ public class Resource implements Serializable {
         this.possessedBy = possessedBy;
     }
 
+    public String getHash() {
+        return hash;
+    }
+
+    public void setHash(String hash) {
+        this.hash = hash;
+    }
+
     @Override
     public String toString() {
         return "Resource{" +
                 "GUID=" + GUID +
                 ", name='" + name + '\'' +
                 ", possessedBy=" + possessedBy.keySet() +
+                ", hash='" + hash + '\'' +
                 '}';
     }
 }
diff --git a/src/main/resources/gui/server_index.fxml b/src/main/resources/gui/server_index.fxml
index 0f13976..a6a592c 100644
--- a/src/main/resources/gui/server_index.fxml
+++ b/src/main/resources/gui/server_index.fxml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import javafx.scene.chart.*?>
 <?import javafx.scene.text.*?>
 <?import javafx.geometry.*?>
 <?import java.lang.*?>
@@ -12,7 +13,7 @@
    <children>
       <VBox>
          <children>
-            <HBox alignment="CENTER">
+            <HBox alignment="CENTER" VBox.vgrow="ALWAYS">
                <children>
                   <VBox alignment="CENTER" spacing="16.0">
                      <children>
@@ -30,7 +31,7 @@
                   <VBox alignment="CENTER" spacing="8.0">
                      <children>
                         <Label text="Log" />
-                        <TextArea fx:id="LogField" maxHeight="150.0" prefHeight="150.0" prefWidth="676.0" wrapText="true">
+                        <TextArea fx:id="LogField" maxHeight="150.0" maxWidth="1.7976931348623157E308" prefHeight="150.0" prefWidth="676.0" wrapText="true">
                            <font>
                               <Font name="Andale Mono" size="9.0" />
                            </font></TextArea>
@@ -39,14 +40,30 @@
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
                      </padding>
                   </VBox>
+                  <VBox alignment="CENTER" spacing="8.0">
+                     <children>
+                        <Label text="Registed" />
+                        <BarChart fx:id="bar_chart" prefHeight="190.0" prefWidth="500.0">
+                          <xAxis>
+                            <CategoryAxis side="BOTTOM" />
+                          </xAxis>
+                          <yAxis>
+                            <NumberAxis side="LEFT" />
+                          </yAxis>
+                        </BarChart>
+                     </children>
+                     <padding>
+                        <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
+                     </padding>
+                  </VBox>
                </children>
             </HBox>
-            <HBox alignment="CENTER">
+            <HBox alignment="CENTER" VBox.vgrow="ALWAYS">
                <children>
-                  <VBox alignment="CENTER">
+                  <VBox alignment="CENTER" HBox.hgrow="ALWAYS">
                      <children>
                         <Label text="UHPT" />
-                        <TableView fx:id="uhpt_table">
+                        <TableView fx:id="uhpt_table" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" VBox.vgrow="ALWAYS">
                           <columns>
                             <TableColumn fx:id="UHPT_GUID" prefWidth="114.0" text="GUID" />
                             <TableColumn fx:id="UHPT_IP" prefWidth="115.0" text="IP" />
@@ -58,13 +75,14 @@
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
                      </padding>
                   </VBox>
-                  <VBox alignment="CENTER">
+                  <VBox alignment="CENTER" HBox.hgrow="ALWAYS">
                      <children>
                         <Label text="UHRT" />
-                        <TableView fx:id="uhrt_table">
+                        <TableView fx:id="uhrt_table" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308">
                           <columns>
                             <TableColumn fx:id="UHRT_GUID" prefWidth="128.0" text="GUID" />
-                            <TableColumn fx:id="UHRT_NAME" prefWidth="115.0" text="NAME" />
+                            <TableColumn fx:id="UHRT_NAME" prefWidth="120.0" text="NAME" />
+                             <TableColumn fx:id="UHRT_HASH" prefWidth="120.0" text="HASH" />
                           </columns>
                         </TableView>
                      </children>
@@ -72,10 +90,10 @@
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
                      </padding>
                   </VBox>
-                  <VBox alignment="CENTER">
+                  <VBox alignment="CENTER" HBox.hgrow="ALWAYS">
                      <children>
                         <Label text="UHRT Tree" />
-                        <TreeView fx:id="uhrt_tree" />
+                        <TreeView fx:id="uhrt_tree" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" />
                      </children>
                      <padding>
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
diff --git a/target/classes/gui/server_index.fxml b/target/classes/gui/server_index.fxml
index 0f13976..a6a592c 100644
--- a/target/classes/gui/server_index.fxml
+++ b/target/classes/gui/server_index.fxml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import javafx.scene.chart.*?>
 <?import javafx.scene.text.*?>
 <?import javafx.geometry.*?>
 <?import java.lang.*?>
@@ -12,7 +13,7 @@
    <children>
       <VBox>
          <children>
-            <HBox alignment="CENTER">
+            <HBox alignment="CENTER" VBox.vgrow="ALWAYS">
                <children>
                   <VBox alignment="CENTER" spacing="16.0">
                      <children>
@@ -30,7 +31,7 @@
                   <VBox alignment="CENTER" spacing="8.0">
                      <children>
                         <Label text="Log" />
-                        <TextArea fx:id="LogField" maxHeight="150.0" prefHeight="150.0" prefWidth="676.0" wrapText="true">
+                        <TextArea fx:id="LogField" maxHeight="150.0" maxWidth="1.7976931348623157E308" prefHeight="150.0" prefWidth="676.0" wrapText="true">
                            <font>
                               <Font name="Andale Mono" size="9.0" />
                            </font></TextArea>
@@ -39,14 +40,30 @@
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
                      </padding>
                   </VBox>
+                  <VBox alignment="CENTER" spacing="8.0">
+                     <children>
+                        <Label text="Registed" />
+                        <BarChart fx:id="bar_chart" prefHeight="190.0" prefWidth="500.0">
+                          <xAxis>
+                            <CategoryAxis side="BOTTOM" />
+                          </xAxis>
+                          <yAxis>
+                            <NumberAxis side="LEFT" />
+                          </yAxis>
+                        </BarChart>
+                     </children>
+                     <padding>
+                        <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
+                     </padding>
+                  </VBox>
                </children>
             </HBox>
-            <HBox alignment="CENTER">
+            <HBox alignment="CENTER" VBox.vgrow="ALWAYS">
                <children>
-                  <VBox alignment="CENTER">
+                  <VBox alignment="CENTER" HBox.hgrow="ALWAYS">
                      <children>
                         <Label text="UHPT" />
-                        <TableView fx:id="uhpt_table">
+                        <TableView fx:id="uhpt_table" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" VBox.vgrow="ALWAYS">
                           <columns>
                             <TableColumn fx:id="UHPT_GUID" prefWidth="114.0" text="GUID" />
                             <TableColumn fx:id="UHPT_IP" prefWidth="115.0" text="IP" />
@@ -58,13 +75,14 @@
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
                      </padding>
                   </VBox>
-                  <VBox alignment="CENTER">
+                  <VBox alignment="CENTER" HBox.hgrow="ALWAYS">
                      <children>
                         <Label text="UHRT" />
-                        <TableView fx:id="uhrt_table">
+                        <TableView fx:id="uhrt_table" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308">
                           <columns>
                             <TableColumn fx:id="UHRT_GUID" prefWidth="128.0" text="GUID" />
-                            <TableColumn fx:id="UHRT_NAME" prefWidth="115.0" text="NAME" />
+                            <TableColumn fx:id="UHRT_NAME" prefWidth="120.0" text="NAME" />
+                             <TableColumn fx:id="UHRT_HASH" prefWidth="120.0" text="HASH" />
                           </columns>
                         </TableView>
                      </children>
@@ -72,10 +90,10 @@
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />
                      </padding>
                   </VBox>
-                  <VBox alignment="CENTER">
+                  <VBox alignment="CENTER" HBox.hgrow="ALWAYS">
                      <children>
                         <Label text="UHRT Tree" />
-                        <TreeView fx:id="uhrt_tree" />
+                        <TreeView fx:id="uhrt_tree" maxHeight="1.7976931348623157E308" maxWidth="1.7976931348623157E308" />
                      </children>
                      <padding>
                         <Insets bottom="16.0" left="16.0" right="16.0" top="16.0" />