diff --git a/FLO_appStore b/FLO_appStore
index bcce47d..168f693 100755
Binary files a/FLO_appStore and b/FLO_appStore differ
diff --git a/getJson.py b/getJson.py
index aefdd8f..8a4fe16 100644
--- a/getJson.py
+++ b/getJson.py
@@ -1,8 +1,9 @@
 import requests
 import json 
 import subprocess
+import hashlib
 
-JsonAddress = "ocZXNtzpiUqBvzQorjAKmZ5MhXxGTLKeSH"
+JsonAddress = 'oXa7t72t3CgnR11ycxVfdupz55eucHufHj'
 
 def searchDict(dicArr,key,val):
     for i in range(len(dicArr)):
@@ -10,6 +11,10 @@ def searchDict(dicArr,key,val):
             return i
     return -1
 
+def findHash(data):
+    result = hashlib.sha1(data.encode())
+    return str(result.hexdigest())
+
 def readUnitFromBlockchain(txid):
     rawtx = subprocess.check_output(["flo-cli","--testnet", "getrawtransaction", str(txid)])
     rawtx = str(rawtx)
@@ -17,28 +22,68 @@ def readUnitFromBlockchain(txid):
     tx = subprocess.check_output(["flo-cli","--testnet", "decoderawtransaction", str(rawtx)])
     content = json.loads(tx)
     text = content['floData']
-    return text
+    return str(text)
 
-def getJsonData():
+def Dappend(Dapps,app):
+    i = searchDict(Dapps,'id',app['id'])
+    if (i!=-1):
+        del(Dapps[i])
+    if ('remove' not in app.keys()):
+        Dapps = Dapps + [app]
+    return Dapps
+
+def verifyHash(localHash,txid):
+    content = readUnitFromBlockchain(txid)
+    try:
+        if(json.loads(content)['hash'] == localHash):
+            print("true")
+            return True
+        else:
+            return False
+    except:
+        return False
+
+
+def getJsonData(Dapps, lastTx):
     r = requests.get("https://testnet.florincoin.info/ext/getaddress/"+JsonAddress)
     data = json.loads(r.content)
     #print(data)
-    Dapps = []
-    for i in range(len(data['last_txs'])):
+    localHash = findHash(str(Dapps))
+    if(lastTx == -1 or not verifyHash(localHash,data['last_txs'][lastTx]['addresses'])):
+        lastTx = 0
+    print(lastTx)
+    for i in range(lastTx,len(data['last_txs'])):
+        print(i)
         if(data['last_txs'][i]['type']=='vin'):
             content = readUnitFromBlockchain(data['last_txs'][i]['addresses'])
             #print(content)
-            if content.startswith("text:Dapps"):
-                #print(data['last_txs'][i]['addresses'])
-                pos = content.find('{')
-                app = json.loads(content[pos:])
-                i = searchDict(Dapps,'id',app['id'])
-                if (i!=-1):
-                    del(Dapps[i])
-                if ('remove' not in app.keys()):
-                    Dapps = Dapps + [app]
+            try:
+                app = json.loads(content)
+            except Exception as e: 
+                #print(e)
+                continue
+            #print(app)
+            if 'Dapp' in app.keys():
+                Dapps = Dappend(Dapps,app['Dapp'])
     #print(Dapps)
-    return Dapps
+    return (Dapps,len(data['last_txs'])-1)
+
+try:
+    with open('Apps.json','r') as F:
+        data=json.loads(F.read())
+        apps = data['Dapps']
+        lastTx = data['lastTx']
+except:
+    apps = []
+    lastTx = -1
+
+print(apps)
+print(lastTx)
+(apps,lastTx) = getJsonData(apps,lastTx)
+
+with open('Apps.json','w+') as F:
+    data = json.dumps({'Dapps':apps ,'lastTx':lastTx})
+    print(data)
+    F.write(data)
+
 
-apps = getJsonData()
-print(apps)
\ No newline at end of file
diff --git a/main.py b/main.py
index ea53566..fd13065 100755
--- a/main.py
+++ b/main.py
@@ -8,8 +8,9 @@ import json
 import math
 import socket
 import requests
+import hashlib
 
-JsonAddress = "ocZXNtzpiUqBvzQorjAKmZ5MhXxGTLKeSH"
+JsonAddress = "oXa7t72t3CgnR11ycxVfdupz55eucHufHj"
 
 def searchDict(dicArr,key,val):
     for i in range(len(dicArr)):
@@ -17,6 +18,10 @@ def searchDict(dicArr,key,val):
             return i
     return -1
 
+def findHash(data):
+    result = hashlib.sha1(data.encode())
+    return str(result.hexdigest())
+
 def isConnected():
 	try:
 		socket.create_connection(("www.github.com", 80))
@@ -32,28 +37,53 @@ def readUnitFromBlockchain(txid):
     tx = subprocess.check_output(["flo-cli","--testnet", "decoderawtransaction", str(rawtx)])
     content = json.loads(tx)
     text = content['floData']
-    return text
+    return str(text)
 
-def getJsonData():
+def Dappend(Dapps,app):
+    i = searchDict(Dapps,'id',app['id'])
+    if (i!=-1):
+        del(Dapps[i])
+    if ('remove' not in app.keys()):
+        Dapps = Dapps + [app]
+    return Dapps
+
+def verifyHash(localHash,txid):
+    content = readUnitFromBlockchain(txid)
+    try:
+        if(json.loads(content)['hash'] == localHash):
+            return True
+        else:
+            return False
+    except:
+        return False
+
+
+def getJsonData(Dapps, lastTx):
     r = requests.get("https://testnet.florincoin.info/ext/getaddress/"+JsonAddress)
     data = json.loads(r.content)
     #print(data)
-    Dapps = []
-    for i in range(len(data['last_txs'])):
+    localHash = findHash(str(Dapps))
+    try:
+    	if(lastTx == -1 or not verifyHash(localHash,data['last_txs'][lastTx]['addresses'])):
+            lastTx = 0
+    except:
+        lastTx = 0
+    #print(lastTx)
+    for i in range(lastTx,len(data['last_txs'])):
+        print(i)
         if(data['last_txs'][i]['type']=='vin'):
             content = readUnitFromBlockchain(data['last_txs'][i]['addresses'])
             #print(content)
-            if content.startswith("text:Dapps"):
-                #print(data['last_txs'][i]['addresses'])
-                pos = content.find('{')
-                app = json.loads(content[pos:])
-                i = searchDict(Dapps,'id',app['id'])
-                if (i!=-1):
-                    del(Dapps[i])
-                if ('remove' not in app.keys()):
-                    Dapps = Dapps + [app]
+            try:
+                app = json.loads(content)
+            except Exception as e: 
+                #print(e)
+                continue
+            #print(app)
+            if 'Dapp' in app.keys():
+                Dapps = Dappend(Dapps,app['Dapp'])
     #print(Dapps)
-    return Dapps
+    return (Dapps,len(data['last_txs'])-1)
 
 class FLOappStore:
 	def __init__(self, root):
@@ -202,7 +232,23 @@ else:
 with open('AppData.json',encoding='utf-8') as F:
 	apps=json.loads(F.read())["Dapps"]
 	'''
-apps = getJsonData()
+
+try:
+    with open('Apps.json','r') as F:
+        data=json.loads(F.read())
+        apps = data['Dapps']
+        lastTx = data['lastTx']
+except:
+    apps = []
+    lastTx = -1
+
+(apps,lastTx) = getJsonData(apps,lastTx)
+
+with open('Apps.json','w+') as F:
+    data = json.dumps({'Dapps':apps ,'lastTx':lastTx})
+    print(data)
+    F.write(data)
+
 root = Tk()
 root.title("FLOappStore")
 root.geometry("1100x500")
diff --git a/send_floData.py b/send_floData.py
new file mode 100644
index 0000000..0e889ef
--- /dev/null
+++ b/send_floData.py
@@ -0,0 +1,89 @@
+import subprocess
+import json
+import random
+import requests
+import hashlib
+
+JsonAddress = 'oXa7t72t3CgnR11ycxVfdupz55eucHufHj'
+toAddress = 'oXa7t72t3CgnR11ycxVfdupz55eucHufHj'
+tempAcc = str(random.randint(100000,999999))
+amt = '0.01'
+
+def searchDict(dicArr,key,val):
+    for i in range(len(dicArr)):
+        if(dicArr[i][key]==val):
+            return i
+    return -1
+
+def readUnitFromBlockchain(txid):
+    rawtx = subprocess.check_output(["flo-cli","--testnet", "getrawtransaction", str(txid)])
+    rawtx = str(rawtx)
+    rawtx = rawtx[2:-3]
+    tx = subprocess.check_output(["flo-cli","--testnet", "decoderawtransaction", str(rawtx)])
+    content = json.loads(tx)
+    text = content['floData']
+    return str(text)
+
+def Dappend(Dapps,app):
+    i = searchDict(Dapps,'id',app['id'])
+    if (i!=-1):
+        del(Dapps[i])
+    if ('remove' not in app.keys()):
+        Dapps = Dapps + [app]
+    return Dapps
+
+def getJsonData():
+    r = requests.get("https://testnet.florincoin.info/ext/getaddress/"+JsonAddress)
+    data = json.loads(r.content)
+    #print(data)
+    Dapps = []
+    for i in range(len(data['last_txs'])):
+        if(data['last_txs'][i]['type']=='vin'):
+            content = readUnitFromBlockchain(data['last_txs'][i]['addresses'])
+            try:
+                app = json.loads(content)
+            except : 
+                continue
+            print(app)
+            if 'Dapp' in app.keys():
+                Dapps = Dappend(Dapps,app['Dapp'])
+    #print(Dapps)
+    return Dapps
+
+def findHash(data):
+    result = hashlib.sha1(data.encode())
+    return str(result.hexdigest())
+
+apps = getJsonData()
+print(apps)
+
+print("Enter floData :")
+lines = []
+while True:
+    line = input()
+    if line:
+        lines.append(line)
+    else:
+        break
+appData = ' '.join(lines)
+try:
+    appData=json.loads(appData)
+except:
+    print('Unable to parse JSON : '+appData)
+    exit(0)
+
+print(appData)
+apps = Dappend(apps , appData)
+print(apps)
+apphash = findHash(str(apps))
+
+floData = json.dumps({'Dapp':appData ,'hash':apphash})
+print('floData = '+floData)
+
+process = subprocess.Popen(['flo-cli','-testnet','getaccount',JsonAddress], stdout=subprocess.PIPE)
+account = process.communicate()[0].decode().strip()
+process = subprocess.Popen(['flo-cli','-testnet','setaccount',JsonAddress,tempAcc], stdout=subprocess.PIPE)
+process = subprocess.Popen(['flo-cli','-testnet','sendfrom',tempAcc,toAddress,amt,'6','','',floData], stdout=subprocess.PIPE)
+txid = process.communicate()[0].decode()
+print('txid : '+txid)
+process = subprocess.Popen(['flo-cli','-testnet','setaccount',JsonAddress,account], stdout=subprocess.PIPE)