IPID spec refresh wishlist

[bumblefudge]

1.) bump to DID v1
2.) anchor proofs: https://chainagnostic.org/CAIPs/caip-168
3.) alsoKnownAs and/or controller

Tag me in all 3!

[jonnycrunch]

also change @context more compliant

[bumblefudge]

Nota bene:
w3c/vc-data-model#1001

[bumblefudge]

I'd imagine some of the changed specified in this recently accepted IPIP might be relevant to updating and/or implementing the spec!