RE: [Agenda] W3C CCG 2024-05-07 - Parallel Signatures in Verifiable Credentials

> could prove problematic if parallel proofs represent different individuals/issuers who signed the same document …

I have an aversion to the using the “parallel signature” term because, to me, it conflates two different things:

Proof Set
https://www.w3.org/TR/vc-data-integrity/#proof-sets


Proof Chain
https://www.w3.org/TR/vc-data-integrity/#proof-chains


I tend to describe a “proof set” as something that enables a single issuer to digitally sign the same credential using different signature types, while a “proof chain” supports capabilities such as multiple entities signing the same document in a particular order, as needed for a notarization use case or for a workflow approval use case.  I’ve also thought that the proof chain use cases do not appear to be a good fit when combined with selective disclosure needs.

Best Regards,

Anil

Anil John
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Science and Technology Directorate
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