ref implementation details

ARCs/arc-0031.md

@@ -258,6 +258,12 @@ A digital signature generated with the secret key *SKa* of an Algorand account c
 
 An attacker **MAY** attempt to cheat with the system by impersonating another User or Verifier. This is possible if the attacker can intercept the digital signature and use the same signature in a replay-attack or man-in-the-middle attack. To mitigate this scenario, the Verifier **MUST** generate a new message for each authentication request, and Wallets must always check the `auth-msg` domain field.
 
+## Reference Implementation
+
+The ARC-31 reference implementation is available in the `assets` directory of this repo `assets/arc-0031`. It provides an example of client-server authentication with ARC-31. The reference implementation uses [MyAlgoWallet](https://wallet.myalgo.com/) as the unique wallet (at the time of writing) providing the possibility of signing random bytes.
+
+Reference implementation credits: [mrcointreau](https://github.com/mrcointreau)
+
 ## Copyright
 
 Copyright and related rights waived via <a href="https://creativecommons.org/publicdomain/zero/1.0/">CCO</a>.