Evidence row 2201941

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://electronics-calc.x402tookit.com/power-cost"
    ]
  ],
  "name": "Electronics Calculators",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Energy use and running cost of a device from its watts, hours per day and electricity price: daily, monthly and yearly.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "hoursPerDay": 8,
              "pricePerKwh": 0.16,
              "watts": 150
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T08:33:12.252Z",
              "costPerDay": 0.19,
              "costPerHour": 0.024,
              "costPerMonth": 5.84,
              "costPerYear": 70.08,
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "kwhPerDay": 1.2,
              "kwhPerMonth": 36.5,
              "kwhPerYear": 438,
              "notChecked": [
                "standby and variable load (use the average draw, not the label rating)",
                "tiered or time-of-use tariffs and fixed charges",
                "…2 more"
              ],
              "reasons": [
                "Energy (kWh) = watts x hours / 1000; cost = kWh x price.",
                "Use the measured average draw: a nameplate rating is a maximum."
              ],
              "source": "computed locally",
              "summary": "150 W for 8 h/day = 1.2 kWh/day: 0.19 per day, 5.84 per month, 70.08 per year (438 kWh).",
              "verdict": "COMPUTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "daysPerYear": {
                      "description": "Days of use per year (default 365)",
                      "type": "number"
                    },
                    "hoursPerDay": {
                      "description": "Hours of use per day, 0 to 24",
                      "type": "number"
                    },
                    "pricePerKwh": {
                      "description": "Electricity price per kWh in your currency",
                      "type": "number"
                    },
                    "watts": {
                      "description": "Device power draw in watts",
                      "type": "number"
                    }
                  },
                  "required": [
                    "watts",
                    "hoursPerDay",
                    "pricePerKwh"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "costPerDay": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "costPerHour": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "costPerMonth": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "costPerYear": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "kwhPerDay": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "kwhPerMonth": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "kwhPerYear": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:51:47.117Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:51:46.951Z"
    },
    "resource": "https://electronics-calc.x402tookit.com/power-cost",
    "serviceName": "Electronics Calculators",
    "tags": [
      "electricity",
      "energy",
      "cost",
      "calculator"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Energy use and running cost of a device from its watts, hours per day and electricity price: daily, monthly and yearly."
}

What the leaf hashes

{"body":"786ecdab0e0438c0744323b644f7b61d766cd4938868199f438df43c7bd99fa3","id":2201941,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810940776,"prev":null,"subject":"x402_bazaar:https://electronics-calc.x402tookit.com/power-cost","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x9acc61b01b265eba8a91a31b336172b14ea6772fa4e809304b31b7e2e4c470d3
2. 0xfabc6541786ff48a03a523b57969cb8d9e1c8c2959db4ff98827d836a4c8b955
3. 0x556447257f40d2cf38e12c25bfbb8df7563c38e541dc0a4ed5d91e09c767eb58
4. 0x09ce980080bb7176a7fb1f4ca4ca00d65c7f979bd461e693f236c13fc461b27b
5. 0xe88cb053b5eb75ef3338c074bd01067049c09e755eb0b6270dd3ff32ee4f9a38
6. 0x552c50c99073ed92b5bed482dfb634ff141dfadd24e0c2e06e33526ef5dcf366
7. 0xe2a9207dc0ae9766ee77eed50293ef8e074414ec08a65b2d700f5900e598e45e
8. 0xc658159ae7c177005892021a73d7fdb7f27582283150ff65f602c0e87372c9fb
9. 0x41f76047a4bedefafba3abadd2d9c2101530379fac38352e886b725f4de9f46e
10. 0xbb0a170f32756995c1e5f363753aae71db3439b90b05ca8116bee61f7b43c7df
11. 0xa44c4a36b8d86fa938e0f579106116effb29fcc0a86614f8c076cc4254c220f6
12. 0xbea97ef87badb4a269a9a806e24faae33a7711fec91ccdaba808349c0475fe9f
13. 0x96eeba0e0bb8dfa0ca66d907340b43514f88c7ff36bd9a1299bad5cc5219d2d0
14. 0xc5de092f33d9a5a2d3076d47423feb11b0630cdc080163babf6390bb04568ce5
15. 0x9c91ecb84461aa4cb2a891252746755d862a88fe9bad822700cdb99eaab2edca
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af