Have you heard of key event receipt infrastructure (KERI)?

It solves the identity problem with decentralized identifiers though the secret sauce is the fractionally weighted multisig for enabling multi-device signing and account recovery with key rotation.

See the specification for more details: https://www.ietf.org/id/draft-ssmith-keri-00.html

Or the whitepaper: https://github.com/SmithSamuelM/Papers/blob/master/whitepape...