Onchain-offer

type: /credentials/1.0/onchain-offer

The onchain offer message comprises information regarding the available verifiable credentials (VCs) from an onchain issuer.

{
    "transaction_data": "{<information_about_smart_contract>}",
    "credentials": [
        {
            "id": "<vc_uuid>",
            "description": "<vc_description>"
        }
    ]
}

Field	Description	Type	Required
credentials	List of available credentials on onchain issuer for fetch	list	✅
credentials.id	ID of onchain credential	string	✅
credentials.description	Additional description of VC	string	❌
transaction_data.contract_address	Smart contract address	string	✅
transaction_data.method_id	Smart contract method (hash from sc method name)	string	✅
transaction_data.chain_id	Chain identification	string	✅
transaction_data.network	Chain network	string	✅

• Example of credential onchain offer:

  {
    "id": "36f9e851-d713-4b50-8f8d-8a9382f138ca",
    "thid": "36f9e851-d713-4b50-8f8d-8a9382f138ca",
    "typ": "application/iden3comm-plain-json",
    "type": "https://iden3-communication.io/credentials/1.0/onchain-offer",
    "body": {
      "credentials": [
        {
          "description": "NonZeroBalance",
          "id": "1"
        }
      ],
      "transaction_data": {
          "contract_address": "0xe826f870852d7eeeb79b2c030298f9b5daa8c8a3",
          "method_id":"0x37c1d9ff",
          "chain_id": 80001,
          "network": "polygon-mumbai"
      }
    },
    "to": "did:polygonid:polygon:mumbai:2qJUZDSCFtpR8QvHyBC4eFm6ab9sJo5rqPbcaeyGC4"
  }