Update app.py

app.py

@@ -29,7 +29,7 @@ class Balance_sheet:
         block = {'index': len(self.chain) + 1,
                 'timestamp': str(datetime.datetime.now()),
                 'transactions': self.pending_transactions,
-                'balance':self.balance
+                #'balance':self.balance
                 'proof': proof,
                 'previous_hash': previous_hash}
         if self.block_valid(block) == True: