Programmatically Issue a Credential

General steps to implement based on events in applications and onchain

Programmatically Issue Verifiable Credentials (VCs)

Issue Verifiable Credentials (VCs) programmatically when certain events occur, such as when a user completes specific actions, swaps a token, completes a level in a game, or mints an NFT. VCs can be issued to a user's ETH address or DID. The options are endless and only bound by your imagination!

Prerequisite

Generate a did:web to ensure credentials are signed with keys that you control

How it works

1. Select event(s) that will result in credential issuance

2. Leverage our API endpoint and set up logic in your platform to issue credentials

   • Determine conditions for issuing credentials to a users

   • Send POST requests to the API to issue the credentials

3. User receives credentials

API Endpoint

Programmatically issue one verifiable credential

post

Generate and return a signed Credential. This will also write the Credential the recipient's data backpack in Disco's Verifiable Data Registry. The JSON body should contain required Credential values for the schema type used. Available schemas and their specifications can be found at https://github.com/discoxyz/disco-schemas.

Authorizations

Body

schemaUrlstringOptional

The URL of the verifiable crednetial schema. Available schemas can be found at https://github.com/discoxyz/disco-schemas

Example: https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/MembershipCredential/1-0-0.json

recipientDIDstringOptional

The DID address of the credential's claimant

Example: did:3:Example987xyz

subjectDataobject · subjectDataOptional

The fields and values for the credential (based on its schema)

Example: { "memberId": "Goldstar Member", "membershipDescription": "Demo membership to showcase Disco API", "membershipLevel": "Permanent", "membershipType": "Developer", "organization": "Disco.xyz" }

expirationDatestringOptional

The date for the credential to expire for the claimant. Leave empty if there's no expiration.

suitestringOptional

Optional - supported values are "JWT" and "712".

issuerstringOptional

The DID address of the credential's issuer.

Example: did:web:api.disco.xyz/v1/disco

skipSignbooleanOptional

To sign or not to sign - hint you should sign! Either leave out or assign false.

Example: false

Responses

200

Success

application/json

401

Unauthorized

application/json

500

Credential not created function captureStackTrace() { [native code] }

application/json

post

HTTPcURLJavaScriptPython

POST /v1/credential HTTP/1.1
Host: 
Authorization: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 499

{
  "schemaUrl": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/MembershipCredential/1-0-0.json",
  "recipientDID": "did:3:Example987xyz",
  "subjectData": "{\n    \"memberId\": \"Goldstar Member\",\n    \"membershipDescription\": \"Demo membership to showcase Disco API\",\n    \"membershipLevel\": \"Permanent\",\n    \"membershipType\": \"Developer\",\n    \"organization\": \"Disco.xyz\"\n  }",
  "expirationDate": "",
  "suite": "",
  "issuer": "did:web:api.disco.xyz/v1/disco",
  "skipSign": "false"
}

{
  "_id": "text",
  "vc": "See https://www.w3.org/TR/vc-data-model/#example-a-simple-example-of-a-verifiable-credential",
  "jwt": "eyJhbGciOiJIUzI1N........",
  "isPublic": "true",
  "issuer": "",
  "recipient": "text",
  "subject": "text",
  "schema": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/MembershipCredential/1-0-0.json",
  "genId": "text",
  "updatedAt": "text",
  "isDeleted": true,
  "history": []
}

Usage example

Curl

curl --location 'https://api.disco.xyz/v1/credential' \
--header 'Content-Type: application/json' \
--header 'Accept: */*' \
--header 'Authorization: Bearer <your Disco API key>' \
--data '{
    "issuer": "did:3:123abcexample",
    "schemaUrl": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/MembershipCredential/1-0-0.json",
    "recipientDID": "did:3:456defexample",
    "subjectData": {
        "memberId": "123XYZ",
        "membershipDescription": "Demo membership to showcase Disco API",
        "membershipLevel": "Permanent",
        "membershipType": "Developer",
        "organization": "Disco.xyz"
    },
    "expirationDate": ""
}'

JavaScript

var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");
myHeaders.append("Accept", "*/*");
myHeaders.append("Authorization", "Bearer <your Disco API key>");

var raw = JSON.stringify({
  "issuer": "did:3:123abcexample",
  "schemaUrl": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/MembershipCredential/1-0-0.json",
  "recipientDID": "did:3:456defexample",
  "subjectData": {
    "memberId": "123XYZ",
    "membershipDescription": "Demo membership to showcase Disco API",
    "membershipLevel": "Permanent",
    "membershipType": "Developer",
    "organization": "Disco.xyz"
  },
  "expirationDate": ""
});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://api.disco.xyz/v1/credential", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));