{
  "vector_id": "AGT-TV-006",
  "name": "Broken Chain",
  "description": "A 3-node chain where the third node references a non-existent predecessor, breaking the hash chain.",
  "category": "invalid",
  "input": {
    "bad_predecessor": "0xddeb62318e66a3a0bc0457e4a0385c29d2f7c5f6fcc85039080fc14131ee92bb",
    "broken_node": {
      "agent_id": "0x0c6b64b1c75de4c1839462872906a6633d78077c284287264a33b4d390546d13",
      "authority_hash": "0xd29e7a4dd00127e4aa67d996fe55a00527e5f316ffe5b3da5bacb5d08289e0da",
      "dependencies": [],
      "h33_74_commitment": null,
      "node_id": "0x11523d517b755d3eff135e4a7148aee93ecd9548247e714ea7cf20eb943dc9aa",
      "node_type": "ToolResponse",
      "payload": {
        "action_summary": "Step 3 broken",
        "action_type": "tool_response.step3",
        "input_hash": "0x3ab5854d9b2d9a0e97dc34fc87651bdbdd0d697cdba1425c7f0f73c602d63673",
        "metadata": {},
        "output_hash": "0x0421d658ce9f6ef4bc7d324294028c4f36c3e24f97c91c93d572c50055bf9031",
        "redaction_level": "MetadataOnly"
      },
      "policy_hash": "0x6eb4a673213b5dc9e7adcca8c12559fca341959476634b38552270619ad9f0fc",
      "predecessor_hash": "0xddeb62318e66a3a0bc0457e4a0385c29d2f7c5f6fcc85039080fc14131ee92bb",
      "session_id": "0xa6e4e3e34e93746b4386abca30010723dd047ea3ab320448933c85a52a1e9be4",
      "timestamp": 1716000002000
    },
    "valid_nodes": [
      {
        "agent_id": "0x0c6b64b1c75de4c1839462872906a6633d78077c284287264a33b4d390546d13",
        "authority_hash": "0xd29e7a4dd00127e4aa67d996fe55a00527e5f316ffe5b3da5bacb5d08289e0da",
        "dependencies": [],
        "h33_74_commitment": null,
        "node_id": "0xf76ce617c1a25d488876f7de2be20ac6859ed4258c7b45e1ad672e0e3def0a96",
        "node_type": "SessionStart",
        "payload": {
          "action_summary": "Session start",
          "action_type": "session.start",
          "input_hash": "0x23b62ccb7f434e661e502e8c336df31a8658a44897052434f21159fa11a0f1c8",
          "metadata": {},
          "output_hash": "0xc4bdd10d2473ff6d2cb842ab4431a848f71946dbdb0ca67651400925a73b0b01",
          "redaction_level": "MetadataOnly"
        },
        "policy_hash": "0x6eb4a673213b5dc9e7adcca8c12559fca341959476634b38552270619ad9f0fc",
        "predecessor_hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "session_id": "0xa6e4e3e34e93746b4386abca30010723dd047ea3ab320448933c85a52a1e9be4",
        "timestamp": 1716000000000
      },
      {
        "agent_id": "0x0c6b64b1c75de4c1839462872906a6633d78077c284287264a33b4d390546d13",
        "authority_hash": "0xd29e7a4dd00127e4aa67d996fe55a00527e5f316ffe5b3da5bacb5d08289e0da",
        "dependencies": [],
        "h33_74_commitment": null,
        "node_id": "0x558a48bc9374fe45c50c8cfb3fcc0bf9de4be31e8769cecd87924fad517df6f7",
        "node_type": "ToolCall",
        "payload": {
          "action_summary": "Step 2",
          "action_type": "tool_call.step2",
          "input_hash": "0xc279920168a99104920b48fd776e2a3843ab846b158e10697d64c4a3ff059907",
          "metadata": {},
          "output_hash": "0x5970110a382252c674dac71e9cedd5fd1bf56c5cb6860286bffd131c336773d4",
          "redaction_level": "MetadataOnly"
        },
        "policy_hash": "0x6eb4a673213b5dc9e7adcca8c12559fca341959476634b38552270619ad9f0fc",
        "predecessor_hash": "0xf76ce617c1a25d488876f7de2be20ac6859ed4258c7b45e1ad672e0e3def0a96",
        "session_id": "0xa6e4e3e34e93746b4386abca30010723dd047ea3ab320448933c85a52a1e9be4",
        "timestamp": 1716000001000
      }
    ]
  },
  "expected_output": {
    "verification_status": "FAILED",
    "dag_integrity": "BROKEN_CHAIN",
    "hash_valid": true,
    "chain_valid": false,
    "replay_deterministic": false,
    "expected_root_hash": null
  },
  "failure_reason": "InvalidPredecessor: node references predecessor 0xddeb62318e66a3a0bc0457e4a0385c29d2f7c5f6fcc85039080fc14131ee92bb which does not exist in the DAG. DAG insertion rejected: true.",
  "version": "1.0.0",
  "generated_at": "2026-05-18T00:00:00Z"
}