Update app.py

app.py

@@ -275,12 +275,12 @@ def mychain_mine_block_send(balance, chain_r=None,chain_n=None):
     
     block = {'index': previous_post['index'],
             'timestamp': previous_post['timestamp'],
-            'sender': previous_post['transactions']['sender'],
-            'recipient': previous_post['transactions']['recipient'],
-            'amount': previous_post['transactions']['amount'],
+            'sender': previous_post['transactions'][0],
+            'recipient': previous_post['transactions'][1],
+            'amount': previous_post['transactions'][2],
             'balance': previous_post['balance'], 
-            'proof': previous_post['index'],
-            'previous_hash': previous_post['index']}
+            'proof': previous_post['proof'],
+            'previous_hash': previous_post['previous_hash']}
     bc_transactions(block)