From b09f82afd256e171f6407fee6e5375006aef1393 Mon Sep 17 00:00:00 2001
From: Joseph Knecht <83087510+JosephKnecht-lab@users.noreply.github.com>
Date: Mon, 1 Jul 2024 11:17:33 +0200
Subject: [PATCH] additional check

---
 jam/src/blockchain.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/jam/src/blockchain.rs b/jam/src/blockchain.rs
index 41eaca6..fc31312 100644
--- a/jam/src/blockchain.rs
+++ b/jam/src/blockchain.rs
@@ -68,6 +68,9 @@ impl Blockchain {
             if current_block.previous_hash != previous_block.block_hash {
                 return false;
             }
+            if current_block.state_root != calculate_state_root(current_block.transactions.clone()) {
+                return false;
+            }
         }
         true
     }