Issuance API

POST /api/qbc/issue
{
  "holder": "did:example:123",
  "claims": { "age": 23, "role": "student" },
  "options": { "pq_safe": true }
}
Response: QBindCredential JSON

Verification API

POST /api/qbc/verify
{
  "presentation": { ... },
  "challenge": "random_nonce"
}
Response:
{
  "valid": true,
  "checked_vectors": 3
}

Presentation API

POST /api/qbc/present
{
  "credential": { ... },
  "claims_to_disclose": ["age_over_18"]
}
Response: QBC Presentation JSON