Evidence row 382690

What was observed

{
  "count": 9,
  "tools": [
    {
      "description": "Public and rapid EV chargers, chargers per 100,000 people, UK rank and plug-in vehicles for a UK council area, from Department for Transport data (EVCI0102, VEH0142).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "council": {
            "description": "Council name or slug, e.g. 'South Norfolk' or 'south-norfolk'",
            "type": "string"
          }
        },
        "required": [
          "council"
        ],
        "type": "object"
      },
      "name": "area_charging_facts"
    },
    {
      "description": "Latest quarterly price per kWh paid by UK businesses for electricity, by annual-use size band, including and excluding the Climate Change Levy, from DESNZ QEP tables 3.4.1 and 3.4.2. Statistics, not a quote.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "band": {
            "description": "Optional size band name, e.g. 'Small' (20-499 MWh a year); leave out for all bands",
            "type": "string"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "business_electricity_prices"
    },
    {
      "description": "Suggests the slowest standard charger that adds the wanted miles within a typical stay, and the total load if every bay charges at once.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "bays": {
            "description": "Number of charging bays",
            "type": "number"
          },
          "dwell_minutes": {
            "description": "Typical stay in minutes",
            "type": "number"
          },
          "miles_wanted": {
            "description": "Miles drivers want to add",
            "type": "number"
          }
        },
        "required": [
          "dwell_minutes",
          "miles_wanted",
          "bays"
        ],
        "type": "object"
      },
      "name": "charger_size"
    },
    {
      "description": "Cost of one charge, per mile and per 100 miles at the UK home price cap rate and average public and rapid pay-as-you-go prices (dated sources), plus an optional own price.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "battery_kwh": {
            "description": "Battery size in kWh",
            "type": "number"
          },
          "end_percent": {
            "description": "Target charge in percent",
            "type": "number"
          },
          "price_pence": {
            "description": "Optional own price in pence per kWh",
            "type": "number"
          },
          "start_percent": {
            "description": "Start charge in percent",
            "type": "number"
          }
        },
        "required": [
          "battery_kwh",
          "start_percent",
          "end_percent"
        ],
        "type": "object"
      },
      "name": "charging_cost"
    },
    {
      "description": "How long an electric car takes to charge between two battery levels at a given charger power, with energy and approximate miles added.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "battery_kwh": {
            "description": "Battery size in kWh",
            "type": "number"
          },
          "car_ac_kw": {
            "description": "Car's maximum AC charging rate in kW (default 11)",
            "type": "number"
          },
          "car_dc_kw": {
            "description": "Car's maximum DC charging rate in kW (default 150)",
            "type": "number"
          },
          "charger_kw": {
            "description": "Charger power in kW",
            "type": "number"
          },
          "dc": {
            "description": "True for a DC (rapid) charger",
            "type": "boolean"
          },
          "end_percent": {
            "description": "Target charge in percent",
            "type": "number"
          },
          "start_percent": {
            "description": "Start charge in percent",
            "type": "number"
          }
        },
        "required": [
          "battery_kwh",
          "start_percent",
          "end_percent",
          "charger_kw"
        ],
        "type": "object"
      },
      "name": "charging_time"
    },
    {
      "description": "Average cost per kW for 10-50 kW solar (DESNZ, from MCS records), yearly generation at a reference city (PVGIS) and simple payback at the DESNZ small-business electricity price, for a Great Britain region.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "kw": {
            "description": "System size in kW (default 30)",
            "type": "number"
          },
          "region": {
            "description": "Region name or slug, e.g. 'East of England' or 'east-of-england'",
            "type": "string"
          }
        },
        "required": [
          "region"
        ],
        "type": "object"
      },
      "name": "commercial_solar_cost"
    },
    {
      "description": "Checks the Workplace Charging Scheme grant and the 100% first-year allowance for EV chargepoints, with official sources and checked dates.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "cost": {
            "description": "Total cost of chargers and installation including VAT, in pounds",
            "type": "number"
          },
          "in_uk": {
            "description": "Site is in England, Wales, Scotland or Northern Ireland (default true)",
            "type": "boolean"
          },
          "off_street": {
            "description": "Chargers on the organisation's own off-street parking (default true)",
            "type": "boolean"
          },
          "org": {
            "description": "One of: business, charity, public, accommodation, school, home, landlord",
            "type": "string"
          },
          "sockets": {
            "description": "Number of charging sockets",
            "type": "number"
          },
          "tax": {
            "description": "One of: ct (Corporation Tax), it (Income Tax), none",
            "type": "string"
          }
        },
        "required": [
          "org",
          "tax",
          "sockets",
          "cost"
        ],
        "type": "object"
      },
      "name": "grant_check"
    },
    {
      "description": "Compares upfront cost, yearly income and payback for fully funded, part funded and self funded chargers. Any input left out uses the example figures from the site's calculator; state the assumptions to the user.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "bays": {
            "description": "Charging bays",
            "type": "number"
          },
          "capex_per_bay": {
            "description": "Equipment and installation in pounds per bay",
            "type": "number"
          },
          "energy_pence": {
            "description": "Site electricity cost in pence per kWh",
            "type": "number"
          },
          "grant_per_bay": {
            "description": "Grant in pounds per bay",
            "type": "number"
          },
          "kwh_per_session": {
            "description": "Energy per session in kWh",
            "type": "number"
          },
          "price_pence": {
            "description": "Price to drivers in pence per kWh",
            "type": "number"
          },
          "running_per_bay_per_year": {
            "description": "Software and maintenance in pounds per bay per year",
            "type": "number"
          },
          "sessions_per_bay_per_day": {
            "description": "Sessions per bay per day",
            "type": "number"
          }
        },
        "required": [],
        "type": "object"
      },
      "name": "host_income_estimate"
    },
    {
      "description": "Sends the user's site details to UK Charging Solutions, which may pass them to an installer partner that may pay a referral fee. Only call this when the user asked to be contacted and agreed to share these details. Returns ok true when sent.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "business": {
            "description": "Business name",
            "type": "string"
          },
          "consent_to_share": {
            "description": "Must be true: the user agreed to their details being shared with an installer partner",
            "type": "boolean"
          },
          "email": {
            "description": "Contact email",
            "type": "string"
          },
          "goal": {
            "description": "What the user most wants from the site (optional); one of the listed values",
            "enum": [
              "Earn more from your site",
              "Cut energy costs",
              "Attract customers and staff",
              "Meet requirements, no capital",
              "Not sure yet"
            ],
            "type": "string"
          },
          "interest": {
            "description": "What the user wants; one of the listed values",
            "enum": [
              "Host chargers, fully funded (revenue share)",
              "Part fund chargers with a provider",
              "Buy chargers outright (self funded)",
              "Solar panels",
              "Battery storage",
              "Fleet or depot charging",
              "Lower business electricity costs",
              "Not sure yet"
            ],
            "type": "string"
          },
          "message": {
            "description": "Anything else about the site (optional)",
            "type": "string"
          },
          "name": {
            "description": "Contact name",
            "type": "string"
          },
          "phone": {
            "description": "Contact phone (optional)",
            "type": "string"
          },
          "postcode": {
            "description": "Site postcode",
            "type": "string"
          },
          "site_type": {
            "description": "Type of site; one of the listed values",
            "enum": [
              "Farm shop or garden centre",
              "Pub, restaurant or café",
              "Hotel, B&B or holiday park",
              "Visitor attraction or leisure",
              "Retail or supermarket",
              "Office or workplace",
              "Fleet depot or logistics",
              "Car park",
              "Farm or rural business",
              "Other"
            ],
            "type": "string"
          }
        },
        "required": [
          "name",
          "email",
          "postcode",
          "site_type",
          "consent_to_share"
        ],
        "type": "object"
      },
      "name": "submit_enquiry"
    }
  ]
}

What the leaf hashes

{"body":"581f0eb0e5b27820d63d9efae7c11e7586886d9b50ecc10bcab0f87444815fe0","id":382690,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793059530207372,"prev":null,"subject":"b3081148-c4ae-4eb0-8a9e-098b994cb5d2","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. 0x67d43d4739ef93e1b66075d5b79d63374476f920a2ffe2fb2a85dd29e9d27797
2. 0x19f1490b9b6324e240a0aba9fccc69a8db17e7c1ae615fa41e6d3d42e31ac4c3
3. 0x7906606f69c51275fdf5e3715fc228044a0c5e30322e8f32a76e04efbbeeec7f
4. 0x6341f79ca6dec12887393fde8acb39eac6738d772fa5cc38faf72e4933048046
5. 0xe93e492d3dfcf301f66b75f366ce17a4452e73250f14a68c2c6b7985fa2d3776
6. 0x1e1207dcaac049ccaedd324b7832952723d60546dc337da4b7e7c429ceb9df7e
7. 0x1c4198170e55cf65e40e4ec4f35389877a0e649fab39b16b8b897d4be5d0833b
8. 0xb37f56ada473a104fff4b5e3f6cfcdca81070858db6b3e85986bfe78015be881
9. 0x7a6f86805ad6e130236b552b8a5997c3d86942be3ff026dac4f2a190fb9deb26
10. 0xe1b6a0c120edc0f0c2cbd8f1aa68f6744ea021014965b2e671812a2fedf53ce9
11. 0x48ff5606b64d91742c8fa41d67fc330937434ce7b5ba57971caf801ce419f684
12. 0xfc80c3ec28002b5abbe969b82c8409cc3216ef75df720eab92db371621f671d9
13. 0x4c257542b0421f909cc313308d9054fb29b4b46d9dca1b83169d04797233fda2
14. 0x3c5462812bd2f841e3d7deefc01555f18262fe5e0d5a7eb155330b7a7cb0388e
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4