From 36d30167cd170ad59322d6964d06d53e70373a0e Mon Sep 17 00:00:00 2001
From: Shuhei Kitagawa <shuhei.kitagawa@c-fo.com>
Date: Thu, 11 Jan 2018 09:31:24 +0900
Subject: [PATCH] change to user last_block instead of self.chain[-1]

---
 blockchain.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/blockchain.py b/blockchain.py
index 4e92d07..d3b6d34 100644
--- a/blockchain.py
+++ b/blockchain.py
@@ -104,7 +104,7 @@ class Blockchain:
             'timestamp': time(),
             'transactions': self.current_transactions,
             'proof': proof,
-            'previous_hash': previous_hash or self.hash(self.chain[-1]),
+            'previous_hash': previous_hash or self.hash(last_block),
         }
 
         # Reset the current list of transactions