diff --git a/README.md b/README.md
index b7e1107..2935468 100644
--- a/README.md
+++ b/README.md
@@ -24,3 +24,7 @@ npm install
 ```text
 npm run test
 ```
+
+### Contract
+
+Proposal on ethersan: https://etherscan.io/address/0xccB9a3A5996aD2c11C8831F8cF97f5D8c7E027c6#code