diff --git a/src/chatmodel.cpp b/src/chatmodel.cpp
index e95aff7..558ea6f 100644
--- a/src/chatmodel.cpp
+++ b/src/chatmodel.cpp
@@ -8,8 +8,11 @@
 #include "ui_memodialog.h"
 #include "addressbook.h"
 #include <QUuid>
+#include <bits/stdc++.h> 
+#include <boost/algorithm/string.hpp> 
 
-
+using namespace std; 
+using namespace boost;
 
 ChatModel::ChatModel(std::map<long, ChatItem> chatItems)
 {
@@ -89,13 +92,18 @@ void ChatModel::renderChatBox(Ui::MainWindow* ui, QListWidget *view)
  
         myDateTime.setTime_t(c.second.getTimestamp());
         
-        //////Render only Memos for selected contacts. Do not render empty Memos
+        //////Render only Memos for selected contacts. Do not render empty Memos //// Render only memos where cid=cid
         if ((ui->ContactZaddr->text().trimmed() == c.second.getAddress())  && (c.second.getMemo().startsWith("{") == false) && (c.second.getMemo().isEmpty() == false)) {
+        //  if (c.second.getMemo.find())
         line += QString("[") + myDateTime.toString("dd.MM.yyyy hh:mm:ss ") +  QString("] ");
         line += QString("<") + QString("Outgoing") + QString("> :\n");
         line += QString(c.second.getMemo()) + QString("\n");      
         view->addItem(line);
         line ="";
+
+       ////////////////////////////////// Todo : Render green checkmark for contacts if cid = cid - We have to search for cid in txid/cid list
+        QString cid = c.second.getCid();
+
         }else{}
 
         if ((ui->MyZaddr->text().trimmed() == c.second.getAddress()) && (c.second.getMemo().startsWith("{") == false) && (c.second.getMemo().isEmpty() == false)){
diff --git a/src/chatmodel.h b/src/chatmodel.h
index 43a0e88..9f06d3a 100644
--- a/src/chatmodel.h
+++ b/src/chatmodel.h
@@ -17,27 +17,33 @@ class ChatItem
         QString _address;
         QString _contact;
         QString _memo; 
+        QString _cid;
+        QString _txid;
         bool _outgoing = false;
 
     public:
         ChatItem() {}
 
-        ChatItem(long timestamp, QString address, QString contact, QString memo)
+        ChatItem(long timestamp, QString address, QString contact, QString memo, QString cid, QString txid)
         {
             _timestamp = timestamp;
             _address = address;
             _contact = contact;
             _memo = memo;
+            _cid = cid;
+            _txid = txid;
             _outgoing = false;
 
         }
 
-        ChatItem(long timestamp, QString address, QString contact, QString memo, bool outgoing)
+        ChatItem(long timestamp, QString address, QString contact, QString memo, QString cid, QString txid, bool outgoing)
         {
             _timestamp = timestamp;
             _address = address;
             _contact = contact;
             _memo = memo;
+            _cid = cid;
+            _txid = txid;
             _outgoing = outgoing;
 
         }
@@ -62,6 +68,16 @@ class ChatItem
             return _memo;
         }
 
+        QString getCid()
+        {
+            return _cid;
+        }
+
+         QString getTxid()
+        {
+            return _txid;
+        }
+
         bool isOutgoing()
         {
             return _outgoing;
@@ -87,6 +103,15 @@ class ChatItem
             _memo = memo;
         }
 
+        void setCid(QString cid)
+        {
+            _cid = cid;
+        }
+         void setTxid(QString txid)
+        {
+            _txid = txid;
+        }
+
         void toggleOutgo()
         {
             _outgoing = true;
diff --git a/src/controller.cpp b/src/controller.cpp
index e6b6b37..0871d6b 100644
--- a/src/controller.cpp
+++ b/src/controller.cpp
@@ -884,7 +884,9 @@ void Controller::refreshTransactions() {
                                 datetime,
                                 address,
                                 QString(""),
-                                memo
+                                memo,
+                                "", // we have to set the cid here, its included in our Addressbook for this contact
+                                txid
                                // true // is an outgoing message
                             );
                         chatModel->addMessage(item);
@@ -922,19 +924,30 @@ void Controller::refreshTransactions() {
                 if (!it["memo"].is_null()) {
                     memo = QString::fromStdString(it["memo"]);
                 }
-  
+
                 TransactionItem tx{
                     "Receive", datetime, address, txid,confirmations, items
                 };
 
                 txdata.push_back(tx);
 
+                QString cid;
+                if (memo.startsWith("{")) {
+
+                cid =  memo.mid(14,36);
+
+                }else{ cid = "";}
+
                     ChatItem item = ChatItem(
                                 datetime,
                                 address,
                                 QString(""),
-                                memo
+                                memo,
+                                cid, // we have to set the cid here, its included in the headermemo
+                                txid
                             );
+                        qDebug()<<cid;
+                        qDebug()<<txid;
                     chatModel->addMessage(item);
 
                 items.push_back(TransactionItemDetail{
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 76cd090..2b252e4 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -1001,6 +1001,7 @@ void MainWindow::setupchatTab() {
         ui->ContactZaddr->setText(p.getPartnerAddress());
         ui->MyZaddr->setText(p.getMyAddress());
         ui->contactNameMemo->setText(p.getName());
+        ui->contactCid->setText(p.getCid());
         
     rpc->refresh(true);
         }
diff --git a/src/mainwindow.ui b/src/mainwindow.ui
index e5eb12e..913907f 100644
--- a/src/mainwindow.ui
+++ b/src/mainwindow.ui
@@ -1524,6 +1524,19 @@
          <string/>
         </property>
        </widget>
+       <widget class="QLabel" name="contactCid">
+        <property name="geometry">
+         <rect>
+          <x>870</x>
+          <y>90</y>
+          <width>331</width>
+          <height>20</height>
+         </rect>
+        </property>
+        <property name="text">
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;br/&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+        </property>
+       </widget>
       </widget>
      </widget>
     </item>