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  1. Integrate an SDK
  2. Veramo
  3. Bitstring Status List

Issuing a Verifiable Credential referencing Status List

Issue a Verifiable Credential referencing a Bitstring Status List within the credentialStatus section of the Credential Body.

Last updated 1 month ago

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Issuing a Verifiable Credential referencing cheqd StatusList

Follow the , including the credentialStatus information, as shown in the example below:

{
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://veramo.io/contexts/profile/v1"
  ],
  "issuer": {
    "id": "did:cheqd:testnet:zGgLTsq96mTsFcFBUCxX6k4kc5i5RNpY"
  },
  "type": [
    "VerifiableCredential",
    "Profile"
  ],
  "issuanceDate": "2022-07-28T15:25:10.000Z",
  "credentialSubject": {
    "name": "Alice",
    "id": "did:key:z6Mkktr27VZ7TTFoTsD9p79JwtGnQDgJWKGrxJ79quE7M5Yx"
  },
  "credentialStatus": {
    "id": "did:cheqd:testnet:zGgLTsq96mTsFcFBUCxX6k4kc5i5RNpY/resources/4a71319b-00b1-4db9-bc05-56dc426f7062#94567"
    "type": "StatusList2021Entry",
    "statusPurpose": "StatusList2021Revocation",
    "statusListIndex": "94567",
    "statusListResource": "did:cheqd:testnet:zGgLTsq96mTsFcFBUCxX6k4kc5i5RNpY/resources/4a71319b-00b1-4db9-bc05-56dc426f7062"
  },
  "proof": {
    "type": "JwtProof2020",
    "jwt": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJ2YyI6eyJAY29udGV4dCI6WyJodHRwczovL3d3dy53My5vcmcvMjAxOC9jcmVkZW50aWFscy92MSIsImh0dHBzOi8vdmVyYW1vLmlvL2NvbnRleHRzL3Byb2ZpbGUvdjByb2ZpbGUvdjEiXSwidHlwZSI6WyJWZXJpZmlhYmxlQ3JlZGVudGlhbCIsIlByb2ZpbGUiXSwiY3JlZGVudGlhbFN1YmplY3QiOnsibmFtZSI6IkFsaWNlIn19LCJzdWIiOiJkaWQ6a2V5Ono2TWtrdHIyN1ZaN1RURm9Uc25RRGdKV0tHc0Q5cDc5Snd0R25RRGdKV0tHcnhKNzlxdUU3TTVZeCIsIm5iZiI6MTY1OTAyMTkxMCwiaXNzIjoiZGlkOmNoZXFkOm1haW5uZXQ6ekFYd3dxWnpoQ1pBMUw3N1pCYThmaFZOakw5TVFDSFgifQ.MRqlKuFQzpjLvsW3C2ZSBEf5jfvJCPQBwl-gP1P8bRfNSvjxj9H3eDgDmEf5jfvJCPQBwUDltBr-ZQ3Q7SKVSvCaJHV8TnUzBA"
  }
}

Where the values within the credentialSubject field are as follows:

Property
Description

id

A specific DID URL dereferencing to the actual status of the Credential

type

The type property MUST be StatusList2021Entry

statusPurpose

The purpose of the status entry MUST be a string. While the value of the string is arbitrary, the following values MUST be used for their intended purpose: revocation or suspension

statusListIndex

The statusListIndex property MUST be an arbitrary size integer greater than or equal to 0, expressed as a string. The value identifies the bit position of the status of the verifiable credential.

statusListCredential

The statusListCredential property MUST is a DID URL to a statusList Resource. When the URL is dereferenced, the resulting Resource MUST have type property that includes the StatusList2021Credential value.

Validate Algorithm for cheqd StatusList

The following process, or one generating the exact output, MUST be followed when validating a verifiable credential that is contained in a cheqd StatusList Resource.

  1. Let credentialToValidate be a verifiable credentials containing a credentialStatus entry that is a StatusList2021Entry, associated with an entry in a bitstring.

  2. Let status purpose be the value of statusPurpose in the credentialStatus entry in the credentialToValidate.

  3. Verify all proofs associated with the credentialToValidate. If a proof fails, return a validation error.

  4. Verify that the status purpose matches the resourceType value in the StatusList2021 Resource.

  5. Let compressed bitstring be the value of the encodedList property of the StatusList2021 Resource.

  6. Let credentialIndex be the value of the statusListIndex property of the bitstring in the StatusList2021 Resource.

  7. Let status be the value of the bit at position credentialIndex in the revocation bitstring.

  8. Return true if status is 1, false otherwise.

Generate a revocation bitstring by passing compressed bitstring to the .

đŸ› ī¸
🍈
instructions for issuing a Verifiable Credential here
Bitstring Expansion Algorithm