Evidence row 258364

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "All sources (llms.txt, docs, MCP servers, skills, rules), detection signals and the role of one tool, by id such as `vercel`, `nextjs` or `drizzle`.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "id": {
            "description": "Topic id, as returned by search or list_topics",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_topic"
    },
    {
      "description": "Every tool in the catalog with its id, name, role and region, without sources. Use it to find candidates per role, then get_topic and their llms.txt sources to compare them.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "region": {
            "description": "Only this region id, e.g. cloud, frameworks, standards or clis",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_topics"
    },
    {
      "description": "Full-text search over tools (topics) and their sources. Matches names, roles, regions, detection signals (files, dependencies, env vars), source titles and URLs. Every word must match, as a prefix.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "kind": {
            "description": "Only return sources of this kind",
            "enum": [
              "llms",
              "full",
              "docs",
              "mcp",
              "skill",
              "rules",
              "guide"
            ],
            "type": "string"
          },
          "limit": {
            "description": "Maximum number of topics, default 10",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Words to search for, e.g. \"database\", \"vercel mcp\" or \"turbo.json\"",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search"
    }
  ]
}

What the leaf hashes

{"body":"9e3186fd986aa01e1fe1fb7d9c409315a64510e0fd7d18862b3200bace99efe8","id":258364,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793030084042678,"prev":null,"subject":"8e4dab51-3119-4036-9be2-12fc20c87659","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. 0x145773704e501923990aeadbc19e0745c6440d332f035e4f4c2db5ecee9cd5cb
2. 0x5b57e31e7bd9ff48a51563158191d75c3a9971dcd60e1fa70d3c412fadc9947e
3. 0x29c58d155c8b0ac8f611de30b1ded3425b34ab9dab04dc1065393abddc459af9
4. 0xc0677eb6bd2bad8583cc510785508407652ae07dd66220ab04912d9e1364e916
5. 0x2c6f468d8d56c1f16abe3083b6f165dbb8ccdd12b45059a2362e95a93ca8f995
6. 0xc0992c02b93599d96242fcb7f89b07c23223e5e89639d199388d465f952849ad
7. 0x92d4dbe45beaf18268e132449049b9a520d46598c81fc093d932c0ff77adf8a4
8. 0x5a871e6404123f8ebe84c73c0127edc4f0bf02611f2db078dda81fb95df654bf
9. 0xdd269aec2d437c98516393a9dbe32220c2d017d42e87fa58fcbdedf26f374b2b
10. 0x5bfb6382f3596c9dd0a20299d184d6508fcdd308373aec23047ff55528f51ccc
11. 0xda5e2c2f0532a3bc2b2bc361905db44768a9ec088fd32d70f9333b7801b14b95
12. 0x2412cb8bc4d10d94e1eb907d5058dd12133e55416609e1b314e811af76620542
13. 0xff1c28bdf595a3d1333e9915edc68e9c5fded7bd5923fa85870979af34cbc3b3
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae