diff --git a/examples/rgb21.rs b/examples/rgb21.rs
index bd1a1bf..09d7895 100644
--- a/examples/rgb21.rs
+++ b/examples/rgb21.rs
@@ -11,7 +11,7 @@ use rgbstd::containers::{ConsignmentExt, FileContent, Kit};
 use rgbstd::invoice::Precision;
 use rgbstd::persistence::Stock;
 use rgbstd::stl::{AssetSpec, Attachment, ContractTerms, MediaType, RicardianContract};
-use rgbstd::{Allocation, GenesisSeal, TokenIndex, XChain};
+use rgbstd::{Allocation, GenesisSeal, Layer1, TokenIndex, XChain};
 use schemata::dumb::NoResolver;
 use schemata::UniqueDigitalAsset;
 use sha2::{Digest, Sha256};
@@ -21,7 +21,7 @@ fn main() {
     let spec = AssetSpec::new("TEST", "Test uda", Precision::Indivisible);
     let beneficiary_txid =
         Txid::from_hex("14295d5bb1a191cdb6286dc0944df938421e3dfcbf0811353ccac4100c2068c5").unwrap();
-    let beneficiary = XChain::Bitcoin(GenesisSeal::rand(beneficiary_txid, 1));
+    let beneficiary = XChain::Bitcoin(GenesisSeal::new_random(beneficiary_txid, 1));
 
     let index = TokenIndex::from_inner(2);
 
@@ -54,6 +54,7 @@ fn main() {
         "ssi:anonymous",
         UniqueDigitalAsset::schema().schema_id(),
         "RGB21Unique",
+        Layer1::Bitcoin,
         ).expect("schema fails to implement RGB21 interface")
 
         .add_global_state("tokens", token_data)
diff --git a/src/nia.rs b/src/nia.rs
index 301d007..b50a3aa 100644
--- a/src/nia.rs
+++ b/src/nia.rs
@@ -277,6 +277,7 @@ mod test {
             NonInflatableAsset::issue_impl(),
             NonInflatableAsset::types(),
             NonInflatableAsset::scripts(),
+            Layer1::Bitcoin,
         )
         .add_global_state("spec", spec)
         .unwrap()
@@ -301,7 +302,7 @@ mod test {
 
         assert_eq!(
             contract.contract_id().to_string(),
-            s!("rgb:XO8d$U!l-i2N5GHH-Rh6TONM-95aiue5-qpA3GQZ-97brf7o")
+            s!("rgb:y$51nuKy-djIYOpk-opwThoC-owoPvrv-UOqil6d-e0ZWcps")
         );
     }
 }