I would suggest having a bank or similarly regulated institution manage identity recovery. They can declare a login invalid, and they can go through the process of KYC (drivers license, SSN, in-person visit, etc) to get you a new identity.

Think Facebook login except instead of tab unrestricted entity that steals every piece of dignity it gets its hands on, its a bank or legal custodian with strict responsibilities, penalties, and insurance in case of identity theft.