Evidence row 306409

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Which public entries list a handle: “is x.com/someone an official account, and whose?”. Give a profile’s address as url (https://x.com/someone), or platform (its catalog id: twitter, instagram, youtube, …) and value (someone or @someone). Answers each entry’s VHID, title and URL, the handle as the entry lists it, and whether that handle is verified; an empty list when no entry lists it. Case is ignored where the platform ignores it. Email addresses are not looked up.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "platform": {
            "description": "The platform’s catalog id, such as twitter. With value.",
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          },
          "url": {
            "description": "A profile’s address, such as https://x.com/someone. Instead of platform and value.",
            "maxLength": 1000,
            "minLength": 1,
            "type": "string"
          },
          "value": {
            "description": "The handle on that platform, such as someone or @someone.",
            "maxLength": 1000,
            "minLength": 1,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "find_by_handle"
    },
    {
      "description": "Up to 50 entries’ public records in one call, by VHID or short name (not a Wikidata QID: get_entry or search_entries finds an entry by its item), each answered as get_entry answers it signed out — the entry, or not_found — in the order given. A name given twice is answered once.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "entries": {
            "description": "The entries: each a VHID (11 digits) or a short name.",
            "items": {
              "allOf": [
                {
                  "pattern": "^(?!\\.{1,2}$)",
                  "type": "string"
                },
                {
                  "pattern": "^[^,]*$",
                  "type": "string"
                }
              ],
              "maxLength": 255,
              "minLength": 1,
              "type": "string"
            },
            "maxItems": 50,
            "minItems": 1,
            "type": "array"
          }
        },
        "required": [
          "entries"
        ],
        "type": "object"
      },
      "name": "get_entries"
    },
    {
      "description": "One entry, by VHID, short name or Wikidata QID: its public record (title, description, handles, image, URL) and, as `editing`, what the editor would load for this key — the current revision, the editable fields, every handle with who manages it (the Wikidata sync or the site), which fields the sync manages, and whether this key may edit it live. Without an API key, the public record alone.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "entry": {
            "description": "The entry: its VHID (11 digits), its short name (as in verifiedhandles.org/<short>), or its Wikidata QID (Q42).",
            "maxLength": 200,
            "minLength": 1,
            "pattern": "^(?!\\.{1,2}$)",
            "type": "string"
          },
          "include_platforms": {
            "default": false,
            "description": "Also list every platform a handle can be on (id, name, URL prefix). Needs an API key.",
            "type": "boolean"
          }
        },
        "required": [
          "entry"
        ],
        "type": "object"
      },
      "name": "get_entry"
    },
    {
      "description": "An entry’s public edit history, newest first (`next_offset` pages on). A merged entry’s key gives its own history.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "entry": {
            "description": "The entry: its VHID (11 digits), its short name (as in verifiedhandles.org/<short>), or its Wikidata QID (Q42).",
            "maxLength": 200,
            "minLength": 1,
            "pattern": "^(?!\\.{1,2}$)",
            "type": "string"
          },
          "limit": {
            "default": 50,
            "maximum": 200,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "maximum": 10000,
            "minimum": 0,
            "type": "integer"
          }
        },
        "required": [
          "entry"
        ],
        "type": "object"
      },
      "name": "get_entry_history"
    },
    {
      "description": "Search the entries as the site search does: words match titles, subtitles and descriptions; a Wikidata QID finds the entries linked to it; a VHID finds that entry and the entries that link to it.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {
          "limit": {
            "default": 20,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "offset": {
            "default": 0,
            "maximum": 10000,
            "minimum": 0,
            "type": "integer"
          },
          "query": {
            "maxLength": 100,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_entries"
    }
  ]
}

What the leaf hashes

{"body":"3b192f138dcfd6f5062eb9ac2d3aa50ac989eab09f648e48b309804a9785a2f9","id":306409,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793056976515014,"prev":null,"subject":"c076cd12-3b56-4846-8230-86d93ce14ad2","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. 0x39db569d8477e71222490d708873b8f78aae5fadbcb8805af38a91d816c1e981
2. 0x9442c3986a0841d63f85f9d039b10d5923afac1cc2e418b5c98275b358316c65
3. 0x2158db7aa0ea0496d0efb84809fac649847e76071473aac37b00455008ff7371
4. 0x5fda4dcb70f6c4005b5cbeb6e7622e7c90946a7419d13f1d2d65af3de58f45c2
5. 0x50532efa909fe373f8735be4666dfbac9a752dc83e27c6457dba857c66d5773a
6. 0xa5bd3f52fd9ae2ff4a65e1b4cf8539549d0f3d8b3b4233b0bce784c1c84b9044
7. 0x54955153e9f65abd283a88efd74a9199c579766be459062003e25156051a0101
8. 0xfb36afba7b07f550231d367baf1d322a60809930d45bc610b519c51d9e612f35
9. 0xe51475e9e26b161586e5cee358e63354a336fde4cd9d2fe7a7f90c67097721a7
10. 0xfda15cdc71a49ed951aef5d062ed510394ecacc85a2243302429b8300694e535
11. 0xd9b921e2251851de5c43bdbb4f58d5e2fa1aee215c84e0f3e0426cf1e4a08e8f
12. 0x18cc4431e4bbe45ee72defb9bb3318434364bf71c883055c6197fa7102ec601a
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae