{
  "algorithm": "ML-DSA-87",
  "did": "did:web:quantamrkt.com:chain:authority",
  "public_key_hex": 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  "key_type": "FIPS 204 ML-DSA-87 (Dilithium5)",
  "key_size_bytes": 2592,
  "created_at": "2026-03-26",
  "usage": "Platform model signing and chain block signatures",
  "verify_endpoint": "/api/models/{slug}/verify",
  "documentation": "/pqc-key"
}