This looks weird. One of the core rules at the IETF is to give each spec enough must-have rules that two compliant implementations are able to interoperate. I

This looks weird. One of the core rules at the IETF is to give each spec enough must-have rules that two compliant implementations are able to interoperate. I don't see that in this case (yes, I know the W3C isn't the IETF). «At the time of publication, there existed 103 experimental DID Method specifications, 32 experimental DID Method driver implementations, a test suite that determines whether or not a given implementation is conformant with this specification and 46 implementations submitted to the conformance test suite.» That seems open-ended indeed, and quite likely to have a high proportion of interoperation bugs. It's good that they have a conformance test suite. Really good.