Evidence row 554759

What was observed

{
  "count": 15,
  "tools": [
    {
      "description": "The columns, which of them are numeric, the row count and the provenance banner of the Roofing Quotes UK dataset. Call this first to learn the schema.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "dataset_columns"
    },
    {
      "description": "The rows of the Roofing Quotes UK dataset whose column is any of the given values, in the order given — for \"X vs Y\" questions.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "column": {
            "minLength": 1,
            "type": "string"
          },
          "values": {
            "items": {
              "minLength": 1,
              "type": "string"
            },
            "maxItems": 10,
            "minItems": 2,
            "type": "array"
          }
        },
        "required": [
          "column",
          "values"
        ],
        "type": "object"
      },
      "name": "dataset_compare"
    },
    {
      "description": "The source, the date it was computed, the licence and the citation for the Roofing Quotes UK dataset. Read this to attribute a figure correctly.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "dataset_provenance"
    },
    {
      "description": "The rows of the Roofing Quotes UK dataset where a column equals a value exactly (case-insensitive).",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "column": {
            "minLength": 1,
            "type": "string"
          },
          "value": {
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "column",
          "value"
        ],
        "type": "object"
      },
      "name": "dataset_row"
    },
    {
      "description": "Rows of the Roofing Quotes UK dataset whose cells contain the query (case-insensitive), up to 50.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "text to look for in any cell",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "dataset_search"
    },
    {
      "description": "count, min, max, mean, median and sum of a numeric column of the Roofing Quotes UK dataset (grouping commas and currency are handled; non-numeric rows are excluded and counted).",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "column": {
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "column"
        ],
        "type": "object"
      },
      "name": "dataset_stats"
    },
    {
      "description": "The highest (or lowest) rows of the Roofing Quotes UK dataset by a numeric column — \"which is the most/least X\".",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "ascending": {
            "description": "true for the lowest first; default highest first",
            "type": "boolean"
          },
          "column": {
            "minLength": 1,
            "type": "string"
          },
          "limit": {
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "column"
        ],
        "type": "object"
      },
      "name": "dataset_top"
    },
    {
      "description": "Read first. States plainly what submit_enquiry does on Roofing Quotes UK: it starts an enquiry with human providers who quote directly. Nothing is bought, ordered or paid; no quote is guaranteed; it is free. Also returns who receives the details, the consent wording, and how the person confirms.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "enquiry_describe"
    },
    {
      "description": "Every field of the Roofing Quotes UK enquiry: key, label, type, whether required, help text and the allowed options where there are any. Pass answers to submit_enquiry keyed by field key.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "enquiry_fields"
    },
    {
      "description": "Every entity of Roofing Quotes UK register, 200 a page, with provenance. Needs an access key (Authorization: Bearer); export pages are metered per key per day. Without a key the answer says how to get one.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "page": {
            "minimum": 1,
            "type": "integer"
          },
          "pageSize": {
            "maximum": 200,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "entities_export"
    },
    {
      "description": "The Roofing Quotes UK register entities in one region (a state or a jurisdiction, by id or name), optionally for one service, 50 a page.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "page": {
            "minimum": 1,
            "type": "integer"
          },
          "pageSize": {
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "region": {
            "maxLength": 60,
            "minLength": 2,
            "type": "string"
          },
          "service": {
            "maxLength": 80,
            "type": "string"
          }
        },
        "required": [
          "region"
        ],
        "type": "object"
      },
      "name": "entities_in"
    },
    {
      "description": "Which fields the Roofing Quotes UK register register carries and on how many entities, the regions and services, the identifier schemes, and how to cite it. Call this first.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "entities_schema"
    },
    {
      "description": "Entities of Roofing Quotes UK register whose name, commercial name, website, address or authority contains the query, optionally within a region (id or name) and a service (slug or name). Up to 50 rows.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "q": {
            "maxLength": 120,
            "type": "string"
          },
          "region": {
            "maxLength": 60,
            "type": "string"
          },
          "service": {
            "maxLength": 80,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "entities_search"
    },
    {
      "description": "The Roofing Quotes UK register entry for a firm, by its register identifier (scheme + value, e.g. lei) or by the slug of its page. Exact match; returns the whole record with its page.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "scheme": {
            "description": "identifier scheme, e.g. lei, fca_frn, tdlr_license",
            "maxLength": 24,
            "minLength": 2,
            "type": "string"
          },
          "slug": {
            "maxLength": 120,
            "minLength": 1,
            "type": "string"
          },
          "value": {
            "maxLength": 80,
            "minLength": 1,
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "entity_lookup"
    },
    {
      "description": "Submits an enquiry to Roofing Quotes UK — NOT a purchase, NOT a guaranteed quote. Step 1: call with the answers (keyed by field key from enquiry_fields) and consent=true; it validates and returns a summary, the consent line and a confirmation token — show the person the summary and the consent line. Step 2: only if the person agrees, call again with the same answers, consent=true and the confirmation token; the enquiry is then submitted, and the person receives an email with a link they must click before any provider sees it. Consent means the person has read and agreed to: \"By submitting you agree Roofing Quotes UK passes your details to roofing contractors covering your area.\"",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "answers": {
            "additionalProperties": {
              "type": [
                "string",
                "number",
                "boolean"
              ]
            },
            "description": "the person's answers, keyed by field key",
            "type": "object"
          },
          "confirmation": {
            "description": "the confirmation token from step 1, after the person has approved the summary",
            "type": "string"
          },
          "consent": {
            "description": "true only when the person has agreed to: By submitting you agree Roofing Quotes UK passes your details to roofing contractors covering your area.",
            "type": "boolean"
          }
        },
        "required": [
          "answers",
          "consent"
        ],
        "type": "object"
      },
      "name": "submit_enquiry"
    }
  ]
}

What the leaf hashes

{"body":"d8ceda1d81e3eb6c771c5ed4c049f7cecc8f6d456fb2662ac7fd7ccee21672e2","id":554759,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793133629327566,"prev":null,"subject":"1c915678-8a58-46c6-9894-bd34af82d3af","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. 0x7b688864cf364f20ed0e36433c612f86afd35d0c87730aab6377cfb4d3bdef75
2. 0x1d3e19f5bbbfd7732a96f866f997f4aa8d85267f0922d933e5a0b366ddd4318d
3. 0x78b276bfef8403de40f14f5b5519e97c7ecaca4ae7f32dd29da0bb4292ec7e70
4. 0x31d7d27bbb2c97e9a3a99b1a36aca6ea307995859370855698457788a31ec843
5. 0x39699d141535cb2c3319a5125d5004473759f1feecd26593efa29da80d6683e9
6. 0x4abaa882cbbd4ca8339b42d2568b82919fead03a02711acd4b793185d23029ab
7. 0x6021067a48910cbfece6fe320fc59d883542ba506dfa7302df9c097a0352e193
8. 0x2ca7ad03ccbb0405e03225ad26e8e346ed2f60dc2f86928264db542d84c9fa2c
9. 0xd5ec4d3a50aaaa867261ff7b431a74d7c3d292e405260f1ed18318c09e1e32c2
10. 0x7dd3f687b0ad4363a3dbdbd52e7f46ad9d425ee75eb439e90516eb43f30d8ce9
11. 0x5fc4b0a456927c5c4428f8a799b89307f1fd731fdb306738036ae0bbf1f21fd8
12. 0x98815e62072eb9319b52d9744169ae17850c056887ffbb325e7f2f9ed317a6a0
13. 0xbc7cf10ae301dcdbc5db5be8c29e1b3618ffaf1c196a74cb6a9e6c4fae0bbeed
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4