Issue credential

Credential is issued to the user with a BJJ signature proof

Create your first credential

async function issueCredential() {
  console.log("=============== issue credential ===============");

  const dataStorage = initDataStorage();
  const credentialWallet = await initCredentialWallet(dataStorage);
  const identityWallet = await initIdentityWallet(
    dataStorage,
    credentialWallet
  );

  const { did:userDID, credential:authBJJCredentialUser } =
    await identityWallet.createIdentity({
      method: DidMethod.Iden3,
      blockchain: Blockchain.Polygon,
      networkId: NetworkId.Mumbai,
      seed: seedPhrase,
      revocationOpts: {
        type: CredentialStatusType.Iden3ReverseSparseMerkleTreeProof,
        id: "https://rhs-staging.polygonid.me"
      }
    });

  console.log("=============== user did ===============");
  console.log(userDID.string());

  const { did:issuerDID, credential:issuerAuthBJJCredential } =
    await identityWallet.createIdentity({
      method: DidMethod.Iden3,
      blockchain: Blockchain.Polygon,
      networkId: NetworkId.Mumbai,
      seed: seedPhrase,
      revocationOpts: {
        type: CredentialStatusType.Iden3ReverseSparseMerkleTreeProof,
        id: "https://rhs-staging.polygonid.me"
      }
    });

  const credentialRequest: CredentialRequest = {
    credentialSchema:
      "https://raw.githubusercontent.com/iden3/claim-schema-vocab/main/schemas/json/KYCAgeCredential-v3.json",
    type: "KYCAgeCredential",
    credentialSubject: {
      id: userDID.string(),
      birthday: 19960424,
      documentType: 99,
    },
    expiration: 12345678888,
    revocationOpts: {
        type: CredentialStatusType.Iden3ReverseSparseMerkleTreeProof,
        id: "https://rhs-staging.polygonid.me"
    }
  };
  const credential = await identityWallet.issueCredential(
    issuerDID,
    credentialRequest
  );

  console.log("===============  credential ===============")
  console.log(JSON.stringify(credential));

  dataStorage.credential.saveCredential(credential)
}

💡 CredentialRequest contains credential type, url to json schema, credential subject data and expiration time. Credential is created with Iden3ReverseMerkleTreeProof credential status or with SparseMerkleTree status if rhs option is not set.

credential example

{
  "id": "http://mytestwallet.com/f2102347-a0a8-4e99-8ff7-a7b39d992372",
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://raw.githubusercontent.com/iden3/claim-schema-vocab/main/schemas/json-ld/iden3credential-v2.json-ld",
    "https://raw.githubusercontent.com/iden3/claim-schema-vocab/main/schemas/json-ld/kyc-v3.json-ld"
  ],
  "type": [
    "VerifiableCredential",
    "KYCAgeCredential"
  ],
  "expirationDate": "2361-03-21T19:14:48.000Z",
  "issuanceDate": "2023-02-07T20:51:19.764Z",
  "credentialSubject": {
    "id": "did:iden3:polygon:mumbai:x1PFECRcqMcyKE116E7PwGCxkyARJ8ybjkpA2zo8g",
    "birthday": 19960424,
    "documentType": 99,
    "type": "KYCAgeCredential"
  },
  "issuer": "did:iden3:polygon:mumbai:wvFiTF7hZKHfyR4ZmHw4NcBg2ZBR4FYdoQ3AAX95e",
  "credentialSchema": {
    "id": "https://raw.githubusercontent.com/iden3/claim-schema-vocab/main/schemas/json/KYCAgeCredential-v3.json",
    "type": "JsonSchemaValidator2018"
  },
  "credentialStatus": {
    "id": "https://rhs-staging.polygonid.me",
    "revocationNonce": 5746,
    "type": "Iden3ReverseSparseMerkleTreeProof"
  },
  "proof": [
    {
      "type": "BJJSignature2021",
      "issuerData": {
        "id": "did:iden3:polygon:mumbai:wvFiTF7hZKHfyR4ZmHw4NcBg2ZBR4FYdoQ3AAX95e",
        "state": {
          "rootOfRoots": "0000000000000000000000000000000000000000000000000000000000000000",
          "revocationTreeRoot": "0000000000000000000000000000000000000000000000000000000000000000",
          "claimsTreeRoot": "c172674faba36517a63ef3a7282d59107fccac006fe958f73fd5e103464c940f",
          "value": "5185762f391463a6dcd7eb45aa7294856c48bc41567a15cf4727b5b0a9d71e05"
        },
        "authCoreClaim": "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",
        "mtp": {
          "existence": true,
          "siblings": []
        },
        "credentialStatus": {
          "id": "https://rhs-staging.polygonid.me",
          "revocationNonce": 0,
          "type": "Iden3ReverseSparseMerkleTreeProof"
        }
      },
      "coreClaim": "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",
      "signature": "3fcc547c0af8fb0d05f86ddd92f54ed564364cb4f7a82a4c01875f42dd4fd8095d41dc02138e10b39b4c4bc185707efc754842f62fd0d97a1cc7468a0d4f8703"
    }
  ]
}