Evidence row 586841

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Get one published opioid treatment provider by its slug.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "slug": {
            "description": "The listing slug.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "type": "string"
          }
        },
        "required": [
          "slug"
        ],
        "type": "object"
      },
      "name": "get_listing"
    },
    {
      "description": "Get the number of published opioid treatment providers, places and categories, and when the data last changed.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "get_stats"
    },
    {
      "description": "List categories with their opioid treatment provider counts.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "List countries, regions and cities that have opioid treatment providers.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_places"
    },
    {
      "description": "List where the opioid treatment provider data comes from, with the license and refresh of each source.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "list_sources"
    },
    {
      "description": "Search published opioid treatment providers by text, place and category.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Category slug, from /categories. A parent slug also matches its children.",
            "maxLength": 100,
            "minLength": 1,
            "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
            "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":"e26defbed78d9b5da1667fc22fdc16dbbda566cf3782a002a6ecfc97182673ef","id":586841,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793147744817134,"prev":null,"subject":"58375af5-071b-42d4-b3f5-8e478cf1fc9e","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0xd403f3c3d8217125911df414d02701a90fc242788ae8269d1bbe31196741b15c
2. 0xe93acae16f979ca13f7a8c21ea51109b944d6f6e49b7ceda063239b537cdca57
3. 0x5bb4af41b457d18c0c80d133d83f04218a4de9b09bdeeae35aa5a40299aaada3
4. 0x12d87ea78a0079321d389c1a3832d1575d5d2a4ff2c3cd1393d37ab1e5f7201f
5. 0xdfab97450aa04ece8622fb04b485b64f0090354bf0418af17275e063e63b0e79
6. 0x08b6735a3df02f516d876540956684271618c58734faca4a9c796377d9471325
7. 0x2f4273a3f931460af3e963455dc943ab9bb136a590071d428d5a6f9b7475dcde
8. 0x31a21947d02d9ef161922e7f6576d60833422f06b32390d8e659d4c1ce3e07e9
9. 0xf439e2ed1c320b2f928b33c61dfdb78954b2bcffb380e17cfd1832a5d7b188d6
10. 0x4647a5979609327142795f04568e1a3c87a58e4cd1644b435701808e875ffadf
11. 0x6cd2d3cf3d8ea1f43dd9ef2de56ac3bcd83b1045cdb800815518b442d3a93878
12. 0x4e65090854d09774c6e68e986d97629dbe6b8a5818463a0edbf12b4e1940476f
13. 0x238781565933a6272b970b298fead630d1a9f307a7409c815f764c79bd0179de
14. 0xf6b8c3d6b5a76cd63c41fa19fc59bcc627a6c650fd84130c55cbc9251f9ffdd9
15. 0x6d86d2282dd724b1b80d031e4e3cf9ed095b746e38c9e58d933efb597daff87f
16. 0x32beeeb960280bc48748681cb10297ede9403461fe9c8143fdf946548e552926
17. 0xe08e8bd91858a8a10c46ecde9c29a6288b960987303173c5e882afb46ce91fa0
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae