How to issue a CWT credential directly

Make a request of the following structure to create and sign a new CWT credential:

POST /v2/credentials/compact/sign

{
  "payload": {
    "iss": "did:web:learn.vii.au01.mattr.global",
    "nbf": 1704099600,
    "exp": 1767258000,
    "type": "Course Credential",
    "name": "Emma Jane Tasma",
    "code": "HS.278",
    "certificationName": "Working at Heights",
    "certificationLevel": "Level 4",
    "issuerName": "Advanced Safety Training",
    "expiry": "2026-01-01"
  },
  "revocable": true,
  "isRevoked": false
}

• iss : Use the Issuer DID. This must be a publicly available and resolvable did:web for the credential to be valid and verifiable.
• nbf : Not before. When set, credential verification will fail if the current time is earlier than the nbf value. Must be expressed as a Unix timestamp.
• exp : Expiry. When set, credential verification will fail if the current time is later than the exp value. Must be expressed as a Unix timestamp.
• type : Credential type.
• name : Example for a custom claim.
• code : Example for a custom claim.
• certificationName : Example for a custom claim.
• certificationLevel : Example for a custom claim.
• issuerName : Example for a custom claim.
• revocable : When set to true, the signed credential can later be revoked. When set to false, the credential cannot be revoked. Defaults to false.
• isRevoked: When set to true, the signed credential is issued as revoked, and must be unrevoked to become valid. If isRevoked is provided (e.g. set to either true or false), revocable must be set to true. Defaults to false.

Response

{
  "id": "bKcrxojFSuSZvI5qhKInxA", 
  "decoded": {
    "iss": "did:web:learn.vii.au01.mattr.global",
    "nbf": 1704099600,
    "type": "Course Credential",
    "exp": 1767258000,
    "name": "Emma Jane Tasma",
    "code": "HS.278",
    "certificationName": "Working at Heights",
    "certificationLevel": "Level 4",
    "issuerName": "Advanced Safety Training",
    "status": {
      "index": 3, 
      "url": "https://learn.vii.au01.mattr.global/v2/credentials/compact/revocation-lists/887cd140-e4d7-4518-b70f-305b23778848"
    },
    "jti": "bKcrxojFSuSZvI5qhKInxA"
  },
  "encoded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
}

• id : Unique credential identifier. This is required when revoking a credential.
• decoded : This is the decoded version of the credential. It includes all the information provided in the request, with the addition of the following elements:
  • status : If revocable was set to true in the request, this object is used to provide information required for revocation:
    • index : This indicates the index of this specific credential within the revocation list.
    • url : References the revocation List which holds the revocation status for this specific credential.
  • jti : This JWT ID identifies this credential and is identical to the id element. When revocable is set to true, this value is persisted on the tenant.
• encoded : The base32 encoded string representation of the CWT credential. CSC stands for COSE Sign Compact profile. You will use this element to convert the credential into a format that can be shared with a holder.

Make a request of the following structure to format a CWT credential as a QR code:

POST /v2/credentials/compact/qrcode

You can make a similar request to a different endpoint to format a Semantic CWT credential as a QR code:

POST /v2/credentials/compact-semantic/qrcode

{
  "payload": "CSC:/1/2KCE3IQEJB5DCMSMGZITM5QBE2QFSALWVQAXQI3ENFSDU53FMI5GYZLBOJXC45TJNEXGC5JQGEXG2YLUORZC4Z3MN5RGC3AFDJSZE7YQHIAACAACOFBW65LSONSSAQ3SMVSGK3TUNFQWYBA2NFLDPEDENZQW2ZLPIVWW2YJAJJQW4ZJAKRQXG3LBMRRW6ZDFMZEFGLRSG44HCY3FOJ2GSZTJMNQXI2LPNZHGC3LFOJLW64TLNFXGOIDBOQQEQZLJM5UHI43SMNSXE5DJMZUWGYLUNFXW4TDFOZSWYZ2MMV3GK3BAGRVGS43TOVSXETTBNVSXQGCBMR3GC3TDMVSCAU3BMZSXI6JAKRZGC2LONFXGOZTFPBYGS4TZNIZDAMRWFUYDCLJQGE5AAAIAACRAEAYDPB2WQ5DUOBZTULZPNRSWC4TOFZ3GS2JOMF2TAMJONVQXI5DSFZTWY33CMFWC6Y3POJSS65RSF5RXEZLEMVXHI2LBNRZS6Y3PNVYGCY3UF5ZGK5TPMNQXI2LPNYWWY2LTORZS6OBYG5RWIMJUGAWWKNDEG4WTINJRHAWWENZQMYWTGMBVMIZDGNZXHA4DIOAH3BAFA3FHFPDIRRKK4SM3ZDTKQSRCPRCYIA7RFUZYQI3RIGDHIGLAODJ6K2F245DTLIIKXAD35TORFQ7MVRJCIEPH6SC6NGA4HRMK76H5V6GXP66FFNX7MNYC6MYVU7ZLLXYVLXBU",
  "width": 800
}

• payload : Use the encoded element from the response obtained when signing the CWT credential.
• width : Optionally specify the desired width of the output QR code. When no width is specified MATTR VII will generate a QR code with an optimised width based on the size of the payload. Maximal value is 1000px.

Response

The response includes a QR code as a PNG file. This QR code contains the encoded credential and can be shared with the intended holder.

Errors

If the provided payload is invalid, the API will return one of the following errors:

• 400 :
  • Payload is not a string.
  • Payload does not match a CWT credential format.
  • The credential has expired.
  • Unable to validate or decode the payload.
  • Generated QR code is larger than the provided width.
• 413 :
  • The payload is too large to be stored in a QR code.

Share the QR code image using your preferred communication channel (e.g. e-mail, messaging platform, etc.).