https://openid.net/developers/how-connect-works/
https://developer.okta.com/blog/2019/10/21/illustrated-guide-to-oauth-and-oidc
https://spapas.github.io/2023/11/29/openid-connect-tutorial/
https://stack-auth.com/blog/oauth-from-first-principles
https://thecopenhagenbook.com/oauth
https://cheatsheetseries.owasp.org/cheatsheets/OAuth2_Cheat_Sheet.html
https://docs.polyphony.chat/Overviews/core/
Federation ID
https://bsky.social/about/blog/3-6-2022-a-self-authenticating-social-protocol
https://docs.bsky.app/blog/oauth-atproto
https://atproto.com/specs/oauth
https://atproto.com/guides/identity
https://web.plc.directory
https://w3c-ccg.github.io/did-primer/
https://blog.spruceid.com/upgradeable-decentralized-identity/
https://identity.foundation/did-traits/
https://www.w3.org/TR/did-core/