Evidence row 2922759

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "List dentists, eye care practices, vets, dermatology or GI practices in a ZIP code, city or state, optionally filtered by ownership label. Covers requests like \"dentists in Plano, TX with no PE ties\" (label=no_known_pe_ties) or \"PE-backed eye doctors in 75024\" (label=pe_backed,lender_owned). Labels: pe_backed, lender_owned (PE-backed, now lender-controlled), corporate_owned (not PE, owned by a company), health_system_owned, group_practice (owned by its dentists/doctors, no outside investor), vc_backed, no_known_pe_ties, unconfirmed, not_labeled; aliases pe and no_pe. Returns counts by label for the area, total, a page of results (limit up to 100, then next_offset) with each one's label wording and source, and the coverage note. Dental and eye care cover every NPI-registered practice; vet, derm and GI list only the tracked groups' locations. Some listings come from clinicians' individual NPI records and aren't confirmed open.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "city": {
            "type": "string"
          },
          "industry": {
            "description": "dental (default), eye, vet, derm or gi.",
            "enum": [
              "dental",
              "eye",
              "vet",
              "derm",
              "gi"
            ],
            "type": "string"
          },
          "label": {
            "description": "One or more labels, comma-separated, e.g. \"no_known_pe_ties\" or \"pe_backed,lender_owned\".",
            "type": "string"
          },
          "limit": {
            "description": "Results per page, default 20.",
            "maximum": 100,
            "minimum": 1,
            "type": "integer"
          },
          "name": {
            "description": "Only businesses whose name contains these words.",
            "type": "string"
          },
          "offset": {
            "description": "Start of the page (use next_offset).",
            "minimum": 0,
            "type": "integer"
          },
          "state": {
            "description": "Two-letter state code or state name. Needed with city unless the city name is unique.",
            "type": "string"
          },
          "zip": {
            "description": "5-digit ZIP code.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "find_businesses"
    },
    {
      "description": "Get an owner group's ownership details: label and consumer wording, owner or PE backers and since when, PE stake (majority or minority), how it holds practices (buyout, partnership, joint venture, de novo), parent and brands, every source with its headline and date, and known locations by state. Covers questions like \"who owns Heartland Dental?\" or \"is Aspen Dental private equity?\" (brand names work).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "id": {
            "description": "Group id from another result, e.g. \"dental:heartland-dental\".",
            "type": "string"
          },
          "industry": {
            "description": "dental, eye (optometry, ophthalmology, optical), vet, derm or gi. Leave out to infer it from the name.",
            "enum": [
              "dental",
              "eye",
              "vet",
              "derm",
              "gi"
            ],
            "type": "string"
          },
          "name": {
            "description": "Group or brand name, e.g. \"Heartland Dental\", \"MyEyeDr\", \"Banfield\".",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "get_group"
    },
    {
      "description": "Checks whether one specific dentist, eye doctor, vet, dermatology or GI practice is private-equity backed, from its name plus city and state or ZIP. A street address or phone number makes the match surer. Returns a status (match, multiple_matches, possible_matches, no_match, need_location), a \"say\" sentence in the site's label wording, and matches with label, owner group, backers, PE stake and deal model, confidence, sources (headline, link, date), coverage and a correction link.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "address": {
            "description": "Street address, or a full address like \"1476 W Buckingham Rd, Garland, TX 75040\".",
            "type": "string"
          },
          "city": {
            "type": "string"
          },
          "industry": {
            "description": "dental, eye (optometry, ophthalmology, optical), vet, derm or gi. Leave out to infer it from the name.",
            "enum": [
              "dental",
              "eye",
              "vet",
              "derm",
              "gi"
            ],
            "type": "string"
          },
          "name": {
            "description": "Business name as the user or a map listing gives it, e.g. \"Aspen Dental\" or \"Smile Magic of Garland\".",
            "type": "string"
          },
          "phone": {
            "description": "Phone number in any format.",
            "type": "string"
          },
          "state": {
            "description": "Two-letter state code (TX) or state name.",
            "type": "string"
          },
          "zip": {
            "description": "5-digit ZIP code.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "lookup_business"
    }
  ]
}

What the leaf hashes

{"body":"b4468ba9daefa7c7d054f149fc91db1ac03d7506a48dabbed745fd079744ed6f","id":2922759,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793754947239467,"prev":null,"subject":"f242543e-1dca-43be-8127-bb1caf006fcc","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-04 (424109 rows).

1. 0x79821a163443bf5c9cd48997c2d94a8f3c6fef9b96b8e98f2327fe09b9965581
2. 0x6051deeacb664ccb5bdb22d7b219b9a962955cbe75b469b3e28e475d6c8a1064
3. 0x05bb2dcb919fef5664ccd9b3ad70080f8351b36f4290b2c9cff04dfdadca65c2
4. 0xc2093b50b4849d7d1fae57cc4fa3d1c6372922446da25c50b00b42e3f804b2b3
5. 0x8f1a8c64e744e9c9373df2d1b9c5d18e117ad5d54ffa19e93875bd3852c33a45
6. 0x394f79e5180e98187aa647828f5dd504f96442ef592eef0f4c3bf2a35437c9c7
7. 0xc775e72bf0203d99b407bc9ee419707a2cf6ebf88b92484ec5ea656fc147cdd6
8. 0x2c7df16db086cda294641f01706c427e06fe77d0a378e19c6dcd474d7e0d4d1b
9. 0xc695235cdeec7955a2808ff4ec8ba1c4017feb4c81d72e2e27eb6577e2b0a61a
10. 0x514f53fce66268e542a9cc0304dea78cb07d7f7c9503e0cf0afb2f04652c1d5d
11. 0x5c58e5230c320cd80fe8a977930c034920a08454789cb2090739a4d208da6d50
12. 0x55e77647e406b749218ebf77b231288658e3c156c9ef8c40be2c3f5b3d96dda7
13. 0x70ca89489a9fa1e2b77ab8b785927af276f82aa5e12570db31702235d8ba85d6
14. 0x672a92bb1aadcb2fdc7b61be035def098029a867a56d638ccf038b9eb9fadf28
15. 0xea9faa12314fce7083bb3fcd444e483bf4b2595fe0fce49bb508693c72ee2193
16. 0xdc69c7e21c2f9c0827141cf63db0938760879d1a284b22ad79d15b80f400808c
17. 0x7f4f557ace8b62cd85774371e24477cdc34df4d2aa68c04511d8678e3978a343
18. 0xc3c363818e1d5142c4629be55f1c9e168a7466e628cfd2a858fe171aff1e91ca
19. 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5

Day root

0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee

Chained

0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b

Published

On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345