diff --git a/goodchain/src/classes/Blockchain.py b/goodchain/src/classes/Blockchain.py
index dcfd8ad..8d4cbe9 100644
--- a/goodchain/src/classes/Blockchain.py
+++ b/goodchain/src/classes/Blockchain.py
@@ -7,6 +7,7 @@ class CBlock:
     previousHash = None
     previousBlock = None
     def __init__(self, data, previousBlock):
+        self.id = 0
         self.data = data
         self.blockHash = None
         self.previousBlock = previousBlock