diff --git "a/doc/\320\277\321\200\320\265\320\267\320\265\320\275\321\202\320\260\321\206\320\270\321\217 \321\200\320\260\321\201\320\277\321\200\320\265\320\264\320\265\320\273\320\265\320\275\320\275\321\213\320\265 \320\262\321\213\321\207\320\270\321\201\320\273\320\265\320\275\320\270\321\217.pptx" "b/doc/\320\277\321\200\320\265\320\267\320\265\320\275\321\202\320\260\321\206\320\270\321\217 \321\200\320\260\321\201\320\277\321\200\320\265\320\264\320\265\320\273\320\265\320\275\320\275\321\213\320\265 \320\262\321\213\321\207\320\270\321\201\320\273\320\265\320\275\320\270\321\217.pptx"
index f93919e..93dd2a4 100644
Binary files "a/doc/\320\277\321\200\320\265\320\267\320\265\320\275\321\202\320\260\321\206\320\270\321\217 \321\200\320\260\321\201\320\277\321\200\320\265\320\264\320\265\320\273\320\265\320\275\320\275\321\213\320\265 \320\262\321\213\321\207\320\270\321\201\320\273\320\265\320\275\320\270\321\217.pptx" and "b/doc/\320\277\321\200\320\265\320\267\320\265\320\275\321\202\320\260\321\206\320\270\321\217 \321\200\320\260\321\201\320\277\321\200\320\265\320\264\320\265\320\273\320\265\320\275\320\275\321\213\320\265 \320\262\321\213\321\207\320\270\321\201\320\273\320\265\320\275\320\270\321\217.pptx" differ
diff --git a/src/blockchain.py b/src/blockchain.py
index 96fe073..c3159e5 100644
--- a/src/blockchain.py
+++ b/src/blockchain.py
@@ -64,7 +64,7 @@ def handle_connection(client_socket, blockchain):
             data = json.loads(data)
             index = len(blockchain.chain)
             new_block = Block(index, time.time(), data,
-                              blockchain.get_latest_block().hash)
+                            blockchain.get_latest_block().hash)
             blockchain.add_block(new_block)
             client_socket.send("Block added successfully".encode())
     client_socket.close()