{
  "format": "bf-evidence-v1",
  "rows": [
    {
      "seq": 1,
      "id": "demo-0001",
      "at": "2026-11-10T09:10:00.000Z",
      "actor_user_id": "user-1",
      "action": "policy.update",
      "target_type": "policy",
      "target_id": "pol-refunds",
      "detail": "{\"rule\":\"refund above 200 needs approval\"}",
      "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
      "hash": "8aff331014c9831be615f7fe9614f0416ddb1ad2b8be9da2ed4032d9f784e902"
    },
    {
      "seq": 2,
      "id": "demo-0002",
      "at": "2026-11-10T09:11:00.000Z",
      "actor_user_id": "user-2",
      "action": "agent.create",
      "target_type": "agent",
      "target_id": "agt-support",
      "detail": "{\"name\":\"Support assistant\"}",
      "prev_hash": "8aff331014c9831be615f7fe9614f0416ddb1ad2b8be9da2ed4032d9f784e902",
      "hash": "ad29b63df6def94039a5371b61e5be3ac0379393dbe971255d7e65a72088c7ed"
    },
    {
      "seq": 3,
      "id": "demo-0003",
      "at": "2026-11-10T09:12:00.000Z",
      "actor_user_id": "user-3",
      "action": "workflow.approve",
      "target_type": "workflow_run",
      "target_id": "run-1042",
      "detail": "{\"step\":\"refund\",\"approver\":\"reviewer-a\"}",
      "prev_hash": "ad29b63df6def94039a5371b61e5be3ac0379393dbe971255d7e65a72088c7ed",
      "hash": "f67ae24ac8068592f319b167ce4a2840d29cc126f2f69f37ceff0048952dddf2"
    },
    {
      "seq": 4,
      "id": "demo-0004",
      "at": "2026-11-10T09:13:00.000Z",
      "actor_user_id": "user-1",
      "action": "workflow.approve",
      "target_type": "workflow_run",
      "target_id": "run-1042",
      "detail": "{\"step\":\"refund\",\"approver\":\"reviewer-b\"}",
      "prev_hash": "f67ae24ac8068592f319b167ce4a2840d29cc126f2f69f37ceff0048952dddf2",
      "hash": "13a5b8f9729295686cb5b807bedb5e934015e4063d3abebd6580ae4268f70d2a"
    },
    {
      "seq": 5,
      "id": "demo-0005",
      "at": "2026-11-10T09:14:00.000Z",
      "actor_user_id": null,
      "action": "agent.block",
      "target_type": "agent",
      "target_id": "agt-support",
      "detail": "{\"reason\":\"policy: no external email\"}",
      "prev_hash": "13a5b8f9729295686cb5b807bedb5e934015e4063d3abebd6580ae4268f70d2a",
      "hash": "dc9085bea709e4660edd9a1e52d44d58f5acce2c79ffdd8f57f1c86a40719fc6"
    },
    {
      "seq": 6,
      "id": "demo-0006",
      "at": "2026-11-10T09:15:00.000Z",
      "actor_user_id": "user-3",
      "action": "evaluation.run",
      "target_type": "evaluation",
      "target_id": "ev-17",
      "detail": "{\"passed\":48,\"failed\":0}",
      "prev_hash": "dc9085bea709e4660edd9a1e52d44d58f5acce2c79ffdd8f57f1c86a40719fc6",
      "hash": "217d86d02629d545b652242520d84e672647190e80d044171d8ea9ba7e0c6212"
    }
  ],
  "seal": {
    "seq": 6,
    "head_hash": "217d86d02629d545b652242520d84e672647190e80d044171d8ea9ba7e0c6212",
    "sealed_at": "2026-11-10T10:00:00.000Z",
    "key_id": "fe812c12f3ab4ce6",
    "signature": "95a54b50957d060ab5b0712e2e943661a68588af23b26264d311057536f32a89e823f59f0291654cb302e0f976db27effea99987ebac5df231f9c97de325ba05",
    "timestamp": null
  },
  "key": {
    "key_id": "fe812c12f3ab4ce6",
    "public_key": "ea4a6c63e29c520abef5507b132ec5f9954776aebebe7b92421eea691446d22c"
  }
}
