Evidence row 275371

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Get one published sandbox provider by its slug.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "slug": {
            "description": "The listing slug.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_listing"
    },
    {
      "description": "Get the number of published sandbox providers, places and categories, and when the data last changed.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "get_stats"
    },
    {
      "description": "List categories with their sandbox provider counts.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "List countries, regions and cities that have sandbox providers.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_places"
    },
    {
      "description": "List where the sandbox provider data comes from, with the license and refresh of each source.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_sources"
    },
    {
      "description": "Search published sandbox providers by text, place and category.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category slug, from /categories. A parent slug also matches its children.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "type": "string"
          },
          "city": {
            "description": "City slug, from /places.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "type": "string"
          },
          "country": {
            "description": "ISO 3166-1 alpha-2 country code, any case. A country the directory does not cover, as listed in /places, gives 400.",
            "pattern": "^[A-Za-z]{2}$",
            "type": "string"
          },
          "cursor": {
            "description": "`page.nextCursor` from the previous response. Opaque. Send the same filters and `limit`.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          },
          "limit": {
            "default": 20,
            "description": "Items per page.",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "q": {
            "description": "Search text, with at least one letter or digit. Matches name, categories, attributes, description and place. Typos fall back to close matches.",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          },
          "region": {
            "description": "Region slug, from /places.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "type": "string"
          },
          "sort": {
            "description": "`relevance` needs `q` and is the default with it. `name` is the default without `q`. `recent` is newest first.",
            "enum": [
              "relevance",
              "name",
              "recent"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_listings"
    }
  ]
}

What the leaf hashes

{"body":"e723ec91b4e0d52b0d33c0593bb5b22ff890ed06f9a4f6d90de1b816543be400","id":275371,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793040565238941,"prev":null,"subject":"bdf2d8a0-04a5-4459-9f49-c45dddb0a214","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. 0x17c57ec21948719a24c3c4c0977dda23cdf2392be29c27e5882eb2cdcc41df5a
2. 0xb4a6f4e8db71242e030b5d9d733eebe7b561cc6be76309b3d3197e0f61f573da
3. 0x77b4e9d352a9a00c8f695943308b0588aaadf8c4e6b298135165262587e4faf2
4. 0x12daced4c58acf8a294a9c7a8b08c2bf615e107cdecde6699bb0d5f0f8c6c578
5. 0x36bf5017ea869c7a61f6a5be248de87f3087cf5da07da50ab16099ea2a29285f
6. 0x84310668a5c21d22c6118ca8adbb3259806e14c74c81cc90485f127e89ee57a2
7. 0xd765b517adec755e6e86ccb5e245e0360798e4ae8f738b196aa8c35253c025a8
8. 0x3a7e3652a06e2ae7601c9f8926eae94180111e9441c6dc028e50371238aa7365
9. 0x8b44e048d071ff46fe57a2dfde8d0baf3f258667549f638cb4d15f6b13acf9a1
10. 0x0fcb0ae13db11f174ecb290ebcb27cf7f0e5aba2eac750fab3d7ca602ae20148
11. 0x84d28434d4d3c4d17b89916035448fc07d9ad132609b14e307edbe020e19d1a6
12. 0x15eab8feed5b3f08165d63b9f1aed508c0624966a05349e051f86f0c188707b5
13. 0x32f46c5f73ecbfd4f770f7f760a79bee2afed4b3e7572fa882b3e7dce8df4356
14. 0x770e4376196188c7fc9ec40f8e218dc0d1cb92bba5fe0425a0edce27ca9a997f
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae