diff --git a/txindex_common/src/chain.rs b/txindex_common/src/chain.rs
index 6d14cc2..4349144 100644
--- a/txindex_common/src/chain.rs
+++ b/txindex_common/src/chain.rs
@@ -1,4 +1,3 @@
-use bitcoin::hashes::Hash;
 pub use bitcoin::network::Network as BNetwork;
 use serde::Serialize;
 
@@ -83,23 +82,6 @@ impl Network {
 
 
 pub fn genesis_hash(network: Network) -> BlockHash {
-    return bitcoin_genesis_hash(network.into());
+    bitcoin::blockdata::constants::genesis_block(BNetwork::from(network))
+        .block_hash()
 }
-
-pub fn bitcoin_genesis_hash(network: BNetwork) -> bitcoin::BlockHash {
-    match network {
-        BNetwork::Bitcoin => BlockHash::from_byte_array(hex_literal::hex!(
-            "9156352c1818b32e90c9e792efd6a11a82fe7956a630f03bbee236cedae3911a"
-        )),
-        BNetwork::Testnet => BlockHash::from_byte_array(hex_literal::hex!(
-            "9e555073d0c4f36456db8951f449704d544d2826d9aa60636b40374626780abb"
-        )),
-        BNetwork::Regtest => BlockHash::from_byte_array(hex_literal::hex!(
-            "a573e91c1772076c0d40f70e4408c83a31705f296ae6e7629d4adcb5a360213d"
-        )),
-        BNetwork::Signet => BlockHash::from_byte_array(hex_literal::hex!(
-            "1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"
-        )),
-        _ => panic!("unknown network {:?}", network),
-    }
-}
\ No newline at end of file