diff --git a/73.md b/73.md
index 2bc837e9..db3b14c6 100644
--- a/73.md
+++ b/73.md
@@ -33,7 +33,7 @@ There are certain established global content identifiers such as [Book ISBNs](ht
 
 ### Blockchain
 
-`<blockchain>` can be any level 1 chain (`bitcoin`, `ethereum`, `solana`, ...). If necessary (e.g. for ethereum), you can specify a `<chainId>`.
+`<blockchain>` can be any layer 1 chain (`bitcoin`, `ethereum`, `solana`, ...). If necessary (e.g. for ethereum), you can specify a `<chainId>`.
 
 #### Bitcoin