{
  "_meta": {
    "contract": "cry01-vc",
    "version": "1.0",
    "purpose": "W3C Verifiable Credential envelope for Civic Infrastructure diagnostic results."
  },
  "_note": "The actual VC is a JSON-LD document signed by the operator. The credentialSubject.claim field contains the claim specific to the issuing addon.",
  "vc_structure": {
    "@context": ["https://www.w3.org/2018/credentials/v1"],
    "type": ["VerifiableCredential"],
    "issuer": "did:web:directory.diagnostics.kane-il.us",
    "issuanceDate": "ISO 8601 timestamp",
    "credentialSubject": {
      "id": "did:web:directory.diagnostics.kane-il.us/channel/{xchan}",
      "association": "association slug",
      "claim_type": "signal | ballot | poll_result | sase_admission",
      "claim": "addon-specific structured claim — see issuing addon spec"
    },
    "proof": {
      "type": "Ed25519Signature2020",
      "created": "ISO 8601 timestamp",
      "verificationMethod": "did:web:directory.diagnostics.kane-il.us#operator-key",
      "proofValue": "base58-encoded signature"
    }
  }
}