Evidence row 1054094

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Get one published AI governance tool by its slug.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "slug": {
            "description": "The listing slug.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_listing"
    },
    {
      "description": "Get the number of published AI governance tools, places and categories, and when the data last changed.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "get_stats"
    },
    {
      "description": "List categories with their AI governance tool counts.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "List countries, regions and cities that have AI governance tools.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_places"
    },
    {
      "description": "List where the AI governance tool data comes from, with the license and refresh of each source.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_sources"
    },
    {
      "description": "Search published AI governance tools by text, place and category.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category slug, from /categories. A parent slug also matches its children.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "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":"3901d3729252c365ae3fdb365572a1e5f9363eafe17c90f4d4ebed481d61fb2c","id":1054094,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793312786694233,"prev":null,"subject":"d85ca58d-022d-44fb-8146-f827a11abd51","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0xb4dabaccb16e0cd205836756909b6002554105421bfea453af770367f05d94f1
2. 0xc0fda2344eab83d84f0397bd81a0af7a5bcf966ff2a2e465eebcc68a980061cf
3. 0xf5d2376b3a7f31c0ae4928f5d7bdd1bec1b86a09715eeea48260385b2f06e945
4. 0x02f70203a7b0423c0c6cf6b5d00b236f3473c37aec2f51c204ed57407d18be4d
5. 0xe40454cc3d0af0888c059954e27f210b6355eb0a31164fe1ed5922154a6814b3
6. 0x5b377b9c92fce9f57663b8cc51bc3a92892669a4c38f29bfb2d540962f20343d
7. 0x8d73a24adef9c93a9a7c52ffb2f9a2ab5abb78a67046c052b62350140a00f45c
8. 0xfde10cbb7ba5f8a3981cb57c4ec4b58f334dd9b23cba8d71c648cb004e9b649d
9. 0x1515bba8dc9af39058611c36c70cd88530cc9422aafcf7b7af9bdfe8273c7cf5
10. 0x7d0baf601f30317a6e2e02e81c8d2849cd5031731d2ae5cef809d260895754a3
11. 0xc01f1f0f8e89972782724882a383210d98bba1ea61114d1a43846ea2356d4d6e
12. 0x3a0ff2ae5308186dd8e4e0f846bbec103aa0059752ff382e52806d78f514eaa2
13. 0xbd648578c40e9d57b13dded5303ab0e7546d05e31678dcce5c005a0949fcc24a
14. 0x585b1e0c9b8e6cc02683a3bcbd6f86329575401feac9ee51a7efd21ed87f7ed0
15. 0xaa1d19094c2ce6d011a3c40533fa7efee207719d6c482ffc47018b28e5518acc
16. 0xef5d5572aac8f06b61579b7167b369fcb479d9027d4037dc9cacff9e3a26ffd2
17. 0xa1fa2e97e71ad6e802f325afd74bb7095901f2060529c9739182a1233f8804bc
18. 0xe01539ac4c9f9cdf265a9e5c6d99c8da11e70ff0c7175fb23e402d33b9d79785

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1