{
  "description": "SAR v0.1 INDETERMINATE fixture (honest ambiguity test vector)",
  "sar_version": "0.1",
  "input": {
    "task_id_hash": "sha256:fixture-task-001",
    "verdict": "INDETERMINATE",
    "confidence": 0,
    "reason_code": "SPEC_AMBIGUOUS",
    "ts": "2026-02-14T12:00:00Z",
    "verifier_kid": "sar-prod-ed25519-01"
  },
  "canonical_json": "{\"confidence\":0,\"reason_code\":\"SPEC_AMBIGUOUS\",\"task_id_hash\":\"sha256:fixture-task-001\",\"ts\":\"2026-02-14T12:00:00Z\",\"verdict\":\"INDETERMINATE\",\"verifier_kid\":\"sar-prod-ed25519-01\"}",
  "receipt_id": "sha256:220ad1bae9f1136fd7d4d2e5bda3980aeb6f5fa61b188581058a9bac7210cfc4",
  "public_key_url": "https://defaultverifier.com/.well-known/sar-keys.json",
  "public_key_kid": "sar-prod-ed25519-01",
  "sig": "base64url:the4F62ZwcHFC2lOzNeVplBg5PnFwwRdpEsMJeNtu07g1S3x2gavuBoxDHR7ZHmFmbNjbFBSqZfsqKZb1zwPDw",
  "verification_steps": [
    "1. JCS-canonicalize `input` (RFC 8785).",
    "2. Confirm it matches `canonical_json` byte-for-byte.",
    "3. SHA256(canonical_json bytes) => receipt_id hex.",
    "4. Verify Ed25519 signature over the hash bytes using public key from sar-keys.json."
  ]
}