Add an Open Badges Example

[OR13]

https://www.imsglobal.org/activity/digital-badges

Please include all the necessary items needed for someone to implement a new Open Badges based Verifiable Credential Data Model compliant VC / VP.

[kimdhamilton]

I'll start on this. Some notes:

• Updated from Open Badges are Verifiable Credentials
• I just reused the issuer and proof from Orie's UniversityDegreeCredential example for now
• I need to double-check the context and terms
• I snipped the redundant issuer from Open Badges are Verifiable Credentials that we had for backcompat

{
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://w3id.org/openbadges/v2"
  ],
  "id": "https://example.com/assertions/1001",
  "type": [
    "Credential?",
    "Assertion?"
  ],
  "issuer": {
    "id": "did:web:vc.transmute.world"
  },
  "issuanceDate": "2020-03-10T04:24:12.164Z",
  "credentialSubject": {
    "id": "https://example.com/profiles/bob",
    "obi:holds": {
      "id": "https://example.com/badgeclasses/123",
      "type": "BadgeClass",
      "name": "Certificate of Accomplishment",
      "image": "data:image/png;base64,...",
      "description": "A badge describing great accomplishments",
      "criteria": {
        "narrative": "Perform tasks of valor and wit."
      }
    }
  },
  "obi:evidence": {
    "id": "https://example.org/portfolios/25",
    "name": "Bob's Portfolio",
    "narrative": "Bob worked hard to develop a good portfolio",
    "genre": "ePortfolio"
  },
  "proof": {
    "type": "JsonWebSignature2020",
    "created": "2020-03-21T17:51:48Z",
    "verificationMethod": "did:web:vc.transmute.world#_Qq0UL2Fq651Q0Fjd6TvnYE-faHiOpRlPVQcY_-tA4A",
    "proofPurpose": "assertionMethod",
    "jws": "eyJiNjQiOmZhbHNlLCJjcml0IjpbImI2NCJdLCJhbGciOiJFZERTQSJ9..OPxskX37SK0FhmYygDk-S4csY_gNhCUgSOAaXFXDTZx86CmI5nU9xkqtLWg-f4cqkigKDdMVdtIqWAvaYx2JBA"
  }
}

fyi @ottonomy