Proposal: OverlaysCaptureBundle

[bj-ms]

In our current use case, we want to include a URL to an OCA bundle. The OCA contains the metadata we need to render a VC correctly.

We would like to propose the following chapter to specify the type OverlaysCaptureBundle:

---

OverlaysCaptureBundle

When an issuer desires to specify OCA rendering instructions for a verifiable credential, they MAY add a render property that uses the data model described below.

Property	Description
id	A URL that dereferences to an OCA bundle with an associated application/json media type. The last URL path segment must be the OCA bundle filename which is the CESR encoded digest of the file's content.
type	The type property MUST be OverlaysCaptureBundle.

The data model shown above is expressed in a verifiable credential in the example below.

EXAMPLE 1: Usage of the render property by an issuer

{
  "@context": [
    "https://www.w3.org/ns/credentials/v2",
    "https://w3id.org/vc/render-method/v1"
  ],
  "id": "http://example.com/credentials/3732",
  "type": ["VerifiableCredential"],
  "issuer": "https://example.com/issuers/14",
  "validFrom": "2010-01-01T19:23:24Z",
  "credentialSubject": {
    "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
    "firstname": "John",
    "lastname": "Smith"
  },
  "renderMethod": [{
    "id": "https://example.com/oca/IEY2Sow9DYS8cSAUN3ot95BRMVxzlCrwtkqBdpZE1kI8.json",
    "type": "OverlaysCaptureBundleV1"
  }]
  
}

In the example above, the issuer has provided an OCA bundle rendering description for a personal ID that will be used to describe the content and the visual representation of the verifiable credential.

[PatStLouis]

big +1, @bj-ms and I will be collaborating on this!