Here is one way: https://eprint.iacr.org/2024/2010

Our (Google) implementation: https://github.com/google/longfellow-zk

An independent implementation by the Internet Security Research Group: https://github.com/abetterinternet/zk-cred-longfellow Still being developed but already interoperable with ours.

European age verification app: https://ageverification.dev/av-doc-technical-specification/d...