Evidence row 308058

What was observed

{
  "count": 18,
  "tools": [
    {
      "description": "One TED notice by publication number: title, buyer, value, deadline, CPV, place of performance, description and winners. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "id": {
            "description": "TED publication number, e.g. 674231-2026",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "eu-tenders__notice"
    },
    {
      "description": "TED notices by keywords, buyer country (ISO alpha-3), CPV code, publication date and type (competition or award), newest first. Free within the daily allowance, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "active_only": {
            "description": "\"true\" to search only notices still open",
            "type": "string"
          },
          "country": {
            "description": "Buyer country, ISO alpha-3 (DEU, FRA, IRL…)",
            "type": "string"
          },
          "cpv": {
            "description": "CPV code prefix, e.g. 48000000 (software)",
            "type": "string"
          },
          "limit": {
            "description": "Max results (default 20, max 50)",
            "type": "integer"
          },
          "page": {
            "description": "Page",
            "type": "integer"
          },
          "published_from": {
            "description": "YYYY-MM-DD",
            "type": "string"
          },
          "q": {
            "description": "Keywords (full text)",
            "type": "string"
          },
          "type": {
            "description": "competition or award",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "eu-tenders__search"
    },
    {
      "description": "Above-threshold UK notices published or updated on Find a Tender in the last 1–7 days, by stage (planning, tender, award), optionally filtered by keyword. Free within the daily allowance, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "days": {
            "description": "Look back 1–7 days (default 3)",
            "type": "integer"
          },
          "limit": {
            "description": "Max results (default 20, max 50)",
            "type": "integer"
          },
          "q": {
            "description": "Keyword filter on title, description and buyer",
            "type": "string"
          },
          "stage": {
            "description": "planning, tender (default) or award",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "uk-tenders__find-a-tender-latest"
    },
    {
      "description": "One notice in full: description, CPV codes, contract dates, procedure and awards (supplier, value, dates). Accepts a Contracts Finder id (GUID) or a Find a Tender notice number (e.g. 095302-2026). Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "id": {
            "description": "Contracts Finder GUID or Find a Tender notice number",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "uk-tenders__notice"
    },
    {
      "description": "Contracts Finder notices by keyword, status (open, closed, awarded, withdrawn), type and publication date, optionally above a minimum value. Free within the daily allowance, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "limit": {
            "description": "Max results (default 20, max 50)",
            "type": "integer"
          },
          "min_value": {
            "description": "Minimum value in £",
            "type": "integer"
          },
          "published_from": {
            "description": "YYYY-MM-DD",
            "type": "string"
          },
          "published_to": {
            "description": "YYYY-MM-DD",
            "type": "string"
          },
          "q": {
            "description": "Keywords (title, description, buyer, supplier)",
            "type": "string"
          },
          "status": {
            "description": "open, closed, awarded or withdrawn",
            "type": "string"
          },
          "type": {
            "description": "contract, pipeline, early-engagement or future-opportunity",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "uk-tenders__search"
    },
    {
      "description": "Contracts Finder awards won by a supplier (name match), newest first, with total value. Free within the daily allowance, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "published_from": {
            "description": "YYYY-MM-DD",
            "type": "string"
          },
          "supplier": {
            "description": "Supplier name (matched as a phrase)",
            "type": "string"
          }
        },
        "required": [
          "supplier"
        ],
        "type": "object"
      },
      "name": "uk-tenders__supplier-awards"
    },
    {
      "description": "UK imports and exports of one product (HS2, HS4, HS6 or CN8 code) for a month or year: totals and top partner countries with share. A few free samples a day, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "code": {
            "description": "Commodity code: 2, 4, 6 or 8 digits",
            "type": "string"
          },
          "period": {
            "description": "YYYY, YYYY-MM or \"latest\" (default latest month)",
            "type": "string"
          },
          "top": {
            "description": "Partner countries to list (default 15, max 50)",
            "type": "integer"
          }
        },
        "required": [
          "code"
        ],
        "type": "object"
      },
      "name": "uk-trade-stats__commodity"
    },
    {
      "description": "UK imports from and exports to one country for a month or year: totals and top HS2 product chapters. A few free samples a day, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "country": {
            "description": "Partner country, ISO alpha-2",
            "type": "string"
          },
          "period": {
            "description": "YYYY, YYYY-MM or \"latest\" (default latest month)",
            "type": "string"
          },
          "top": {
            "description": "Chapters to list (default 15, max 50)",
            "type": "integer"
          }
        },
        "required": [
          "country"
        ],
        "type": "object"
      },
      "name": "uk-trade-stats__country"
    },
    {
      "description": "The most recent month HMRC has published trade statistics for. A few free samples a day, then $0.0005 USDC per call via x402.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "uk-trade-stats__latest"
    },
    {
      "description": "Tariff geographical areas: countries and the groups used in measures (e.g. 1011 ERGA OMNES, 1013 European Union, trade agreements), with group members. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "kind": {
            "description": "all, countries or groups",
            "type": "string"
          },
          "q": {
            "description": "Filter by name or id",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "uk-trade-tariff__areas"
    },
    {
      "description": "One commodity code: description, section/chapter/heading, third-country duty and every import/export measure (preferential rates, VAT, additional duties, controls with document codes). Give country to keep only what applies to that origin. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "code": {
            "description": "Commodity code, 6–10 digits (padded to 10), e.g. 0901210000",
            "type": "string"
          },
          "country": {
            "description": "Country of origin, ISO alpha-2 (e.g. CN, US, IN) — filters measures to those that apply",
            "type": "string"
          }
        },
        "required": [
          "code"
        ],
        "type": "object"
      },
      "name": "uk-trade-tariff__commodity"
    },
    {
      "description": "HMRC's monthly exchange rates used to convert invoice values for customs and import VAT, units per £1. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "currency": {
            "description": "ISO currency code, e.g. USD (default: all)",
            "type": "string"
          },
          "month": {
            "description": "Month 1–12",
            "type": "integer"
          },
          "year": {
            "description": "Year",
            "type": "integer"
          }
        },
        "required": [
          "year",
          "month"
        ],
        "type": "object"
      },
      "name": "uk-trade-tariff__exchange-rates"
    },
    {
      "description": "A 4-digit heading and every commodity code under it, with indents and whether each is declarable. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "code": {
            "description": "4-digit heading, e.g. 0901",
            "type": "string"
          }
        },
        "required": [
          "code"
        ],
        "type": "object"
      },
      "name": "uk-trade-tariff__heading"
    },
    {
      "description": "Quota definitions with status (open, exhausted, critical), initial volume, remaining balance and validity, by order number or country of origin. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "country": {
            "description": "Country of origin, ISO alpha-2",
            "type": "string"
          },
          "order_number": {
            "description": "6-digit quota order number",
            "type": "string"
          },
          "page": {
            "description": "Page",
            "type": "integer"
          },
          "status": {
            "description": "open, exhausted, blocked, critical or not_exhausted",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "uk-trade-tariff__quotas"
    },
    {
      "description": "Candidate commodity codes, headings and chapters for a product description (\"roasted coffee\", \"lithium battery\"), best match first. Free within the daily allowance, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "limit": {
            "description": "Max results (default 15, max 30)",
            "type": "integer"
          },
          "q": {
            "description": "Product description",
            "type": "string"
          }
        },
        "required": [
          "q"
        ],
        "type": "object"
      },
      "name": "uk-trade-tariff__search"
    },
    {
      "description": "One federal award in full: agency, recipient and parent, obligated/outlayed/potential value, dates, place of performance, NAICS and PSC. Free within the daily allowance, then $0.002 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "id": {
            "description": "Award id from search (generated_internal_id)",
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "us-spending__award"
    },
    {
      "description": "A federal recipient: name, UEI, parent, alternate names, business types, location and total amounts. Give id, or name to use the best match. A few free samples a day, then $0.02 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "id": {
            "description": "Recipient id (from search)",
            "type": "string"
          },
          "name": {
            "description": "Recipient name",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "us-spending__recipient"
    },
    {
      "description": "Federal awards by keyword, recipient, awarding agency and date range, largest first. kind: contracts (default), idvs, grants or loans. Free within the daily allowance, then $0.003 USDC per call via x402.",
      "inputSchema": {
        "properties": {
          "agency": {
            "description": "Awarding agency (top tier), e.g. Department of Defense",
            "type": "string"
          },
          "from": {
            "description": "Action date from, YYYY-MM-DD",
            "type": "string"
          },
          "kind": {
            "description": "contracts, idvs, grants or loans",
            "type": "string"
          },
          "limit": {
            "description": "Max results (default 20, max 50)",
            "type": "integer"
          },
          "page": {
            "description": "Page",
            "type": "integer"
          },
          "q": {
            "description": "Keywords",
            "type": "string"
          },
          "recipient": {
            "description": "Recipient name",
            "type": "string"
          },
          "to": {
            "description": "Action date to, YYYY-MM-DD",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "us-spending__search"
    }
  ]
}

What the leaf hashes

{"body":"a3175c1fbb35df769ed4c214cadf39fe4e851effc2555b21affd66009c3997fc","id":308058,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793058042156281,"prev":null,"subject":"ff0853a6-09f6-4142-825b-652b003d9274","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. 0x12ce08031909757959f8f4ff0d9d074ae9ae6648db7f82fc5e3253cbc4f331eb
2. 0x96353a8f8b235a4fde81b1bcc3de2b4e496df46cfd8ca22a7cc96f9bf71bb85a
3. 0x91b331fa68c595286cb1dde1196984842047673210307212cba6c62ad4baac66
4. 0x9e93143b9353cbceb034f92f2554b447961a07450d9bdaec6c1de85a70f6763a
5. 0xc174b27172732466c156efc06fa3be3bd9218793ec268b7fd961c9ae9d6b8a5b
6. 0x343086faca62aef897031739e9a7aeda1487a55ccbec7d5fe1f44c0d623ac1cd
7. 0xbdf76d13b99e2fd5f64114dbe8528ce33565f61a182fedfcf9e88ca2f72160a9
8. 0x72e05f7a4c90c8dbbd6a3f896418dabc3ba5568e17f114f4bebb89b60a213e31
9. 0x31281cc241602f227d6ca5a2d91abb8f79aa5398081ede67e4cdddb5f6e7617e
10. 0x484fa7effc83120a0d44e655979cb6c3d8629711e39e46f2e4137a81a1d0af64
11. 0x502ad0a7c2d0bbc45ef3aea37a6ae457822535bcbd44272f1f9e8e4f7166c167
12. 0x7e390200ea1ea25db5884cf05fa50ad599f0759b573f081e361cc22f7206133c
13. 0xff1c28bdf595a3d1333e9915edc68e9c5fded7bd5923fa85870979af34cbc3b3
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae