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Programmatic Issuance

Describes how to issue a credential programmatically, via the API
You will need:
  • A valid API key, from the steps here: Generate an API Key​
  • any HTTP library, curl, or Postman
  • the schema URL to issue
  • fields and descriptions for your schemas to issue.

Find your Schema URL

Determine your schema you'd like to issue by visiting our schemas repo (If you'd like a custom schema not here already, please reach out to us).
Find the schema, and find the raw json. Example here of a GM credential.
Save this link, you'll need to reference this later.
​

Authentication

Remember that we use Bearer Auth. This should be in the Auth header as follows:
Authorization: Bearer <your-token-here>

Creating your Request

post
https://api.disco.xyz/v1/credential
Generate and return a signed credential programmatically.
​
Here are some example code snippets:
Example cURL request
curl --location 'http://api.disco.xyz/v1/credential/' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <redacted>' \
--data '{
"schemaUrl": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/GMCredential/1-0-0.json",
"subjectData":{},
"recipientDID":"did:3:kjzl6cwe1jw147pkworv5ff70zkwjne15b4ww4xwyof4cdgvgsw8xl1srg287wj"
}'
Example Javascript (node using fetch) request
​
var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");
myHeaders.append("Authorization", "Bearer <redacted>");
​
var raw = JSON.stringify({
"schemaUrl": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/GMCredential/1-0-0.json",
"subjectData": {},
"recipientDID": "did:3:kjzl6cwe1jw147pkworv5ff70zkwjne15b4ww4xwyof4cdgvgsw8xl1srg287wj"
});
​
var requestOptions = {
method: 'POST',
headers: myHeaders,
body: raw,
redirect: 'follow'
};
​
fetch("http://api.disco.xyz/v1/credential/", requestOptions)
.then(response => response.text())
.then(result => console.log(result))
.catch(error => console.log('error', error));
```
Example Response
​
{
"@context": [
"https://www.w3.org/2018/credentials/v1"
],
"type": [
"VerifiableCredential",
"GmCredential"
],
"issuer": {
"id": "did:3:kjzl6cwe1jw145l0eotzxw28znn1zcis2khwa1rf56ss5a8e55ffhqht25fmk66"
},
"issuanceDate": "2023-05-08T15:54:56.431Z",
"id": "did:3:kjzl6cwe1jw145l0eotzxw28znn1zcis2khwa1rf56ss5a8e55ffhqht25fmk66#fe0b5bab-a850-40ac-a5bc-46d779feda41",
"credentialSubject": {
"id": "did:3:kjzl6cwe1jw147pkworv5ff70zkwjne15b4ww4xwyof4cdgvgsw8xl1srg287wj"
},
"credentialSchema": {
"id": "https://raw.githubusercontent.com/discoxyz/disco-schemas/main/json/GMCredential/1-0-0.json",
"type": "JsonSchemaValidator2018"
},
"proof": {
"verificationMethod": "did:3:kjzl6cwe1jw145l0eotzxw28znn1zcis2khwa1rf56ss5a8e55ffhqht25fmk66#controller",
"created": "2023-05-08T15:54:56.538Z",
"proofPurpose": "assertionMethod",
"type": "EthereumEip712Signature2021",
"proofValue": "0x8808c6ed2f471e2d8bfbde026ce787e39b638959e9174b88d8a14d9742fe3840079345cea7c120c71f3b50689806f9c4ab25d5bbc2722018f35ba9d22b913a551c",
"eip712Domain": {
"domain": {
"chainId": 1,
"name": "Disco Verifiable Credential",
"version": "1"
},
"messageSchema": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "chainId",
"type": "uint256"
}
],
"Proof": [
{
"name": "created",
"type": "string"
},
{
"name": "proofPurpose",
"type": "string"
},
{
"name": "type",
"type": "string"
},
{
"name": "verificationMethod",
"type": "string"
}
],
"Issuer": [
{
"name": "id",
"type": "string"
}
],
"CredentialSubject": [
{
"name": "id",
"type": "string"
}
],
"VerifiableCredential": [
{
"name": "@context",
"type": "string[]"
},
{
"name": "credentialSubject",
"type": "CredentialSubject"
},
{
"name": "id",
"type": "string"
},
{
"name": "issuanceDate",
"type": "string"
},
{
"name": "issuer",
"type": "Issuer"
},
{
"name": "proof",
"type": "Proof"
},
{
"name": "type",
"type": "string[]"
}
]
},
"primaryType": "VerifiableCredential"
}
}
}
​