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Re: Understanding @contexts and credentialSchemas

From: Orie Steele <orie@transmute.industries>
Date: Thu, 10 Jun 2021 09:09:05 -0500
Message-ID: <CAN8C-_LkijD_9eJuex-BqvrQj=vcJAbEUQp5MCLjsYiFEQM23A@mail.gmail.com>
To: Kerri Lemoie <klemoie@concentricsky.com>
Cc: W3C Credentials CG <public-credentials@w3.org>
This won't be a complete answer, but at the time of publication I
believe that field was used in 2 ways.

1. with json schema, see this for example -
https://w3c-ccg.github.io/vc-json-schemas/
2. with hyperledger indy zkp-cl signature vc's

In both cases, "credentialSchemas" was more about the VC data shape and
type, whereas contexts and JSON-LD are best used only for semantics.

There are other tools like SHACL that can help do linked data shape
constraints, perhaps someone might use them with credentialSchemas in the
future.

but AFAIK, "credentialSchemas" is focused on the credential data shape. and
"@context" is focused on the semantics and term definitions used in the
credential.

OS

On Wed, Jun 9, 2021 at 5:15 PM Kerri Lemoie <klemoie@concentricsky.com>
wrote:

> Hello all,
>
> I’m reviewing this: https://www.w3.org/TR/vc-data-model/#data-schemas
>
> Could folks please explain to me the uses of credentialSchemas in
> comparison to @context files in JSON-LD? Is it that @context files name the
> attributes and credentialSchemas provide the information about how to
> validate the data/semantics?
>
> Can you provide some real-world examples? Bonus points for human centered
> examples such as identity,  education, &  workforce. :)
>
> Thanks!
>
> Kerri
>
>
>
> --------
> Kerri Lemoie, PhD
> Director, Digital Credentials Research & Innovation
> badgr.com <https://info.badgr.com/> | concentricsky.com
> she/her/hers
>
>
>
>
>
>
>

-- 
*ORIE STEELE*
Chief Technical Officer
www.transmute.industries

<https://www.transmute.industries>
Received on Thursday, 10 June 2021 14:12:13 UTC

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