diff --git a/CIP-0010/registry.json b/CIP-0010/registry.json
index c2cc6eee74..87910b0d8e 100644
--- a/CIP-0010/registry.json
+++ b/CIP-0010/registry.json
@@ -55,6 +55,10 @@
     "transaction_metadatum_label": 1226,
     "description": "Oracle related transaction metadata"
   },
+  {
+    "transaction_metadatum_label": 1304,
+    "description": "on-chain certification metadata"
+  },
   {
     "transaction_metadatum_label": 1564,
     "description": "Marlowe - a DSL for writing and executing financial contracts"