FEP-ef61 update: https://codeberg.org/fediverse/fep/pulls/447
The most important change here is a switch from FEP-c7d3 to FEP-fe34. An algorithm for computing origin of a DID URL has been specified, so now it is possible to do this:
is_same_origin(id, proof.verificationMethod)
@sun @silverpill my recommendation would be to look at did:tdw https://identity.foundation/trustdidweb/ (which may soon be renamed, heh). It's got some of the good features from Bluesky, and is on the way to be standardized.