W3C home > Mailing lists > Public > public-credentials@w3.org > December 2019

Re: Verifiable Credential Greeting Cards

From: Orie Steele <orie@transmute.industries>
Date: Wed, 4 Dec 2019 16:27:59 -0600
Message-ID: <CAN8C-_+Zmkp2RwhZwfU7+MHZaTtGacH4OD5uyLKMuSDkFM8Fhg@mail.gmail.com>
To: "Michael Herman (Parallelspace)" <mwherman@parallelspace.net>
Cc: "W3C Credentials CG (Public List)" <public-credentials@w3.org>
Thanks for the feedback!

I based the structure on:
https://www.w3.org/TR/vc-data-model/#example-7-specifying-multiple-subjects-in-a-verifiable-credential

I thought of a greeting card as a VC with the Issuer being the FROM and the
subject being the TO.

After your comments, I'm not sure what I have done is correct.

I have updated the demo to correct some missing fields and tested on jsonld
playground. Is this more what people were expecting?

OS

{
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://transmute-industries.github.io/vc-greeting-card/context/vc-greeting-card-v0.0.jsonld"
  ],
  "id": "https://example.com/credentials/1872",
  "type": [
    "VerifiableCredential",
    "GreetingCard"
  ],
  "issuer": "did:key:z6MkobeddxBBkCWdXZP7bAbTnjuJ9wmKPi8zzA1WwQtCCQRr",
  "issuanceDate": "2019-12-04T22:20:39.285Z",
  "credentialSubject": {
    "id": "did:example:123",
    "greetingCard": {
      "type": "HolidayCard",
      "image": "http://i.imgur.com/SxtVfyQ.jpg",
      "message": "Happy Holidays!",
      "from": "did:key:z6MkobeddxBBkCWdXZP7bAbTnjuJ9wmKPi8zzA1WwQtCCQRr",
      "to": "did:example:123"
    }
  },
  "proof": {
    "type": "Ed25519Signature2018",
    "created": "2019-12-04T22:20:39Z",
    "jws": "eyJhbGciOiJFZERTQSIsImI2NCI6ZmFsc2UsImNyaXQiOlsiYjY0Il19..TO7wGkMcM-Ey2h2I2GMRsOAQ8r9xPL7mDEkPefuYmUy32lYhRuS0AiNjcIpYYkWil8RvITmnpb2syqDgpPgsAg",
    "proofPurpose": "assertionMethod"
  }
}


ᐧ

On Tue, Dec 3, 2019 at 3:05 PM Michael Herman (Parallelspace) <
mwherman@parallelspace.net> wrote:

> Orie, I have a follow-up question regarding the value of the *id*
> attribute in the *credentialSubject* (line 14).
>
>
>
> In the current implementation, the value of the *credentialSubject*’s *id*
> attribute is the value of the *to* attribute, the subject/entity the
> greeting card is addressed to.
>
>
>
> Is this correct?  …this is a credential about a specific *greeting card*
> – that is, the greeting card is the subject of this credential, n’est pas?
>
>
>
>
>
> I think the corrected version of this greeting card should look like this…
>
>
>
>
>
> *From:* Orie Steele <orie@transmute.industries>
> *Sent:* December 2, 2019 8:16 AM
> *To:* W3C Credentials CG (Public List) <public-credentials@w3.org>
> *Subject:* Verifiable Credential Greeting Cards
>
>
>
> I've been working on some supporting documentation regarding JSON-LD
> Contexts, extending them and hosting your own, as well as interop with
> did:key.
>
> If you are interested in creating custom credential formats for new use
> cases, this demo may be of use to you.
>
> https://transmute-industries.github.io/vc-greeting-card/
>
> Here is a VC Greeting card for this list, happy holidays:
> https://transmute-industries.github.io/vc-greeting-card/?vcgc=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
>
> OS
>
>
>
> --
>
> *ORIE STEELE*
>
> Chief Technical Officer
>
> www.transmute.industries
>
>
>
> <https://www.transmute.industries>
>
> ᐧ
>


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

<https://www.transmute.industries>

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Received on Wednesday, 4 December 2019 22:28:15 UTC

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