http://specification.openbadges.org/credentials/#DefinedAchievementAssertion

DefinedAchievementAssertion.jsonld

{
  "@context": "https://w3id.org/credentials/v1",
  "id": "https://example.com/identities/bob",
  "type": ["Identity", "Person"],
  "name": "Bob Bobman",
  "birthdate": "1985-12-14",
  "email": "bbob@example.com",
  "emailSha512": "ph9dC0z3uy3pfHe2QADhuoFc6Zm9N0wIDmwH0lSs06ZXdsgvueIWK3ZXyZXawxGtkfayU+tFVZDc42J1+w+3FQ==",
  "achievement": ["https://bigunivertsity.edu/credentials/BA"],
  "credential": [{
    "id": "https://biguniversity.edu/credentials/53091/badge",
    "type": "AchievementCredential",
    "issueDate": "2015-03-01",
    "claim": {
      "id": "https://example.com/identities/bob",
      "email": "bbob@example.com",
      "emailSha512": "ph9dC0z3uy3pfHe2QADhuoFc6Zm9N0wIDmwH0lSs06ZXdsgvueIWK3ZXyZXawxGtkfayU+tFVZDc42J1+w+3FQ==",
      "achievement": {
        "id": "https://bigunivertsity.edu/credentials/BA",
        "type": ["Achievement", "UniversityDegree"],
        "name": "Bachelor of Arts",
        "description": "The gold standard of credentials in liberal arts education",
        "image": "https://biguniversity.edu/credentials/BA/image",
        "criteria": "https://biguniversity.edu/credentials/BA/criteria",
        "issuer": {
          "id": "https://biguniversity.edu/id",
          "type": ["Issuer", "Identity"],
          "name": "Big University",
          "url": "http://biguniversity.edu",
          "publicKey": "https://biguniversity.edu/keys/1"
        }
      }
    },
    "expires": "2018-01-01",
    "signature": {
       "type": "GraphSignature2012",
       "creator": "https://biguniversity.edu/keys/1",
       "signature": "3780eyfh3q0fhhfiq3q9f8ahsidfhf29rhaish"
    }
  }]
}