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Identifiers in Verifiable Credentials

From: Kerri Lemoie <klemoie@concentricsky.com>
Date: Sun, 6 Jun 2021 17:57:52 -0400
Message-Id: <4AF776A8-D2D2-4B39-907D-8DC2F9895B98@concentricsky.com>
To: W3C Credentials CG <public-credentials@w3.org>
Hello all,

I have a question about identifiers in verifiable credentials. The documentation states:

"When expressing statements about a specific thing, such as a person, product, or organization, it is often useful to use some kind of identifier so that others can express statements about the same thing. This specification defines the optional id property for such identifiers. The id property is intended to unambiguously refer to an object, such as a person, product, or organization. Using the id property allows for the expression of statements about specific things in the verifiable credential."


In the credentialSubject property it seems clear that the id can represent the subject that the claim is about but I’m not clear on the uses for the optional id in the vc assertion. It would be helpful to learn about some examples or suggested uses.


For some context: in VC-EDU, we’re discussing Open Badges as VCs. Open Badges have historically mostly been verified via issuer hosted URLs.  One of the reasons to move away from hosted URLs is to remove the dependence on the issuer for verification. However, there may continue to be use cases for when an Open Badge should still be verified through its hosted url. 


Thanks,

Kerri
Received on Sunday, 6 June 2021 21:58:25 UTC

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