I prefer the approach taken by nostr[1] and Scuttlebutt[2], where identity is a public key not tied to any particular server. However Mastodon is gaining a lot

I prefer the approach taken by nostr[1] and Scuttlebutt[2], where identity is a public key not tied to any particular server. However Mastodon is gaining a lot more traction and seems to be good enough in practice. 1. https://github.com/nostr-protocol/nostr https://github.com/nostr-protocol/nostr 2. https://scuttlebutt.nz/ https://scuttlebutt.nz/