Verify a credential

A holder can hand you their Yutai credential: the tier they carry and the day it was issued. Paste it below to check it. The check runs in this browser alone, so the credential is never sent to Yutai or anywhere else, and nothing is kept.

The proof is simulated for now: no key signs a credential yet, so the check proves the credential has not been changed since Yutai issued it, not who issued it.