That is basically the idea of .well-known Webfinger is when you want to multiplex multiple identities on a single domain E.g. https://example.com/.well-known/

That is basically the idea of .well-known Webfinger is when you want to multiplex multiple identities on a single domain E.g. https://example.com/.well-known/webfinger?resource=nick@example.com https://example.com/.well-known/webfinger?resource=nick@exam... Will serve the challenge proving your handle is @nick@example.com