Chain of custody for every agent action.

{
  "tenant_id": "griff-ai-public",
  "seq": 3,
  "previous_hash": "5586df15d382a3120a47125de66ec72064cdf81df2af5901096dab12a2917723",
  "ts": "2026-05-06T16:00:10.800Z",
  "event": "audit.export.ready",
  "source": "master-atc-public-demo",
  "payload": {
    "goal": "Buyer-safe evidence export is ready with a verified hash chain.",
    "agents": [
      "Custody ledger",
      "Verifier",
      "Export service"
    ],
    "evidence_package": {
      "task_id": "public-demo-task-001",
      "attempt_id": "public-demo-attempt-003",
      "artifact_ids": [
        "demo://artifact/MASTER_ATC_demo_evidence_certificate.pdf",
        "demo://audit/public-demo-chain"
      ],
      "diff_artifact_id": "demo://contract/no-code-diff",
      "test_output_artifact_id": "demo://verification/hash-chain-pass",
      "logs_artifact_id": "demo://runner/public-deterministic-simulation",
      "acceptance_mapping": [
        {
          "criterion": "Hash chain verifies end to end",
          "satisfied": true,
          "evidence": "eventCount=9 verified=true"
        },
        {
          "criterion": "Public certificate contains no secrets or customer data",
          "satisfied": true,
          "evidence": "secretsTouched=false customerData=false"
        },
        {
          "criterion": "Export pack can be signed and replayed",
          "satisfied": true,
          "evidence": "pack_format=griff-audit-pack/v1 algorithm=HMAC-SHA256"
        }
      ],
      "policy_clearance": {
        "forbidden_files_touched": false,
        "forbidden_commands_run": false,
        "budget_exceeded": false
      },
      "evidence_quality_score": 0.96
    },
    "judge_decision": {
      "decision": "allow",
      "confidence": 0.95,
      "hard_gates": {
        "tests_passed": true,
        "security_clear": true,
        "policy_clear": true,
        "evidence_complete": true,
        "budget_ok": true,
        "lease_valid": true
      },
      "votes": {
        "policy": "allow",
        "custody": "allow",
        "export": "allow"
      },
      "reason": "The export is buyer-safe, deterministic, and carries a replayable signature path."
    },
    "cost_usd": 0,
    "runtime_seconds": 10.8
  },
  "hash": "3826634003563f13d26020939d4cda332aab43135fa8949b95d46254a3f8f75c"
}