Evidence row 566292

What was observed

{
  "count": 3,
  "tools": [
    {
      "description": "Free. Searches the official company register of the given country for the company name and returns the matching entities (idx, registry reference, name, address), an order id, and what a report covers. Nothing is charged. Supported country codes: GB, FR, NO, FI, CZ, EE, SK, LV, IL, CA, CY, US (CA: federal corporations only; US: SEC reporting companies only).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "company": {
            "description": "Company name to look up.",
            "maxLength": 200,
            "minLength": 2,
            "type": "string"
          },
          "country": {
            "description": "Two-letter country code: GB, FR, NO, FI, CZ, EE, SK, LV, IL, CA, CY, US.",
            "type": "string"
          }
        },
        "required": [
          "company",
          "country"
        ],
        "type": "object"
      },
      "name": "check_coverage"
    },
    {
      "description": "Selects one entity from the check_coverage results (idx, starting at 0) and returns the x402 payment requirements for a report (USDC on Base, exact amount in the requirements). This tool does not pay. To pay, send the signed payment in a PAYMENT-SIGNATURE header to the returned pay_url, then read the report with get_report.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "company": {
            "description": "Same company name used in check_coverage.",
            "maxLength": 200,
            "minLength": 2,
            "type": "string"
          },
          "country": {
            "description": "Same country code used in check_coverage.",
            "type": "string"
          },
          "idx": {
            "description": "Index of the chosen entity in the check_coverage candidates.",
            "minimum": 0,
            "type": "integer"
          }
        },
        "required": [
          "company",
          "country",
          "idx"
        ],
        "type": "object"
      },
      "name": "create_order"
    },
    {
      "description": "Returns the status of an order and, once delivered, the report (structured JSON and plain text). Status values: pending_entity, pending_payment, paid, delivered. An unpaid order returns its payment requirements.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "order_id": {
            "description": "Order id (UUID) returned by check_coverage or create_order.",
            "type": "string"
          }
        },
        "required": [
          "order_id"
        ],
        "type": "object"
      },
      "name": "get_report"
    }
  ]
}

What the leaf hashes

{"body":"0295fee50d1cc5e47132685b8eb426c2c7dc29e771851638ff2b3575711d0fcb","id":566292,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138416671215,"prev":null,"subject":"6fdbb2ed-242a-41dd-a1a4-d2af2d891a76","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xd0e760bf5816b7d4f0e6bb6d3825e49b54372e9697145039c29b5824b6e7a46d
2. 0xf72c1e8c21ce06cc23c0d9b71ad6803acf52e822215aa3be5a606ff87fb29c76
3. 0x31009a1dc9d725f8990d7aec88d9953827a3484d75a1d2ff1083e84f1b3cdaa7
4. 0x1ddfd4f06ee9ff1966934b64fb01bd197cf38e7ffddc06c8e750defb72891e61
5. 0xcc14b01e5478ebb0b137a2b4ad962330ea3a438c1042b35ea6d2115955145fb6
6. 0x14a63d4805115070b6b48a007f2a648efb11d348890f31701e106eed6e6bc60f
7. 0x48fa0950bc919ca967ef02a2bd8fbdb63933f6bdee790a76b92bbd192d6be21a
8. 0x8905982fe7747e8a7120d13391665dc83c20d666784c125c556a961c03931db9
9. 0xa27ede3cad511221f20ba52362c5d4a3bea0edf10582d5de2bc355cae2117c50
10. 0x34cacd18dd2b0acd35a8edd618baa8897a3f862cd032cfa7b608a35a78af9818
11. 0x4b1aadf42648925230bfb44b27bd502af3645508661ab5ac15765dd2ba24b33e
12. 0x38b115338d9e861f29b2feec4763340cc61f27fc2c2bbe5bf04934e95e485c6c
13. 0xc66f83a1320fe7c1faf22674eeeb7fae22ecd2f0b102d9619a484291f2ce104a
14. 0x8f676edfb4faaa290229d8f4f69ab721fc627424463d62f5146b3d1ca7f2f0c6
15. 0x969cd44e5a4e8dc3110540398fbf689659eb51df735c1cda5d8f021ef9ff5683
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4