Evidence row 258252

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Analyzes breaking changes between two schema versions. Detects: field removal, type changes, newly required fields, enum value removal, constraint tightening.",
      "inputSchema": {
        "properties": {
          "newSchema": {
            "description": "New (candidate) schema version",
            "type": "object"
          },
          "oldSchema": {
            "description": "Previous (deployed) schema version",
            "type": "object"
          }
        },
        "required": [
          "oldSchema",
          "newSchema"
        ],
        "type": "object"
      },
      "name": "breaking-change-analyzer"
    },
    {
      "description": "Detects differences between an actual API response and an expected JSON schema. Reports missing_required (error), type_mismatch (error), enum_violation (error), missing_optional (warning), unexpected_field (info). Recurses into nested objects.",
      "inputSchema": {
        "properties": {
          "response": {
            "description": "Actual API response to check against schema",
            "type": "object"
          },
          "schema": {
            "description": "Expected JSON schema",
            "type": "object"
          }
        },
        "required": [
          "schema",
          "response"
        ],
        "type": "object"
      },
      "name": "drift-detector"
    },
    {
      "description": "Validates if data conforms to a JSON schema. Returns valid:true/false and an error message on failure.",
      "inputSchema": {
        "properties": {
          "data": {
            "description": "Data to validate (any type)"
          },
          "schema": {
            "description": "JSON schema to validate against",
            "type": "object"
          }
        },
        "required": [
          "schema",
          "data"
        ],
        "type": "object"
      },
      "name": "schema-validator"
    }
  ]
}

What the leaf hashes

{"body":"c5ae7352175853986e4a62760a6d0bb11a0dd2c166d3547bc03e60ea7ce84afc","id":258252,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793030019779158,"prev":null,"subject":"c47d1c3f-1e82-4431-8b47-65413af93ec7","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x4685ef21333e40fd144233247540f22f23353a53cba7d5220bb2096639112790
2. 0xfabf2a8d236632220ee2b41c6b9f16d418d2f38e2895ef3e7b641fb376b21c86
3. 0x2726343380514f1adb5415e3b0ba41688a177992a1a677009b2e1586367e7829
4. 0x451ab5ff6962bd9ce31f51c095f568ae4b4cb451c1634d03103e0df334324111
5. 0x8f07d5853bbf2ed2f59e105fa9c84156e8618b510ff97eddfac468cc90e59cef
6. 0x396db5a7ed53ae2b7091c5e47c7a03a4fca75979d0ad5a5368be0720ce357b94
7. 0x25bc1b076b3ed4e77ac9f26f3c547771df5cb4f29618aeef861cccc2a4b01ce8
8. 0xcf618d87c617a46fb628cd4a3f5203b3449c9b75bcf21575cdeb760a29f0a746
9. 0x4bfe8740166ab95fa564100b6bd0a7cddbf3f30b1a26b5ac329927d9b7e82c64
10. 0xdc7dda1200bf02188f12be23ee59ca8c8b9224b74d678936dffe5bc067401e58
11. 0xdbfd78a5599cc272407d120acb838567e0679d241216572c603e875a5947fb2e
12. 0x804dd9d5afe0f1a780e24099fb6b21f5f20545893ea0eeddf5fb9114e2f3edd5
13. 0x54b29089c0a3cbbd6ddbe58944696110984dd5f418275cb1b77f957c56da8eab
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae