Keybase was great. The idea behind it (using private key to prove your identity) is the idea behind some of the default methods for the Decentralized Identifier

Keybase was great. The idea behind it (using private key to prove your identity) is the idea behind some of the default methods for the Decentralized Identifier (DID) standard: https://www.w3.org/TR/did-1.0/ https://www.w3.org/TR/did-1.0/ There are some good ideas there (and Bluekey uses DIDs: https://atproto.com/specs/did https://atproto.com/specs/did)