Evidence row 2201626

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://map-tiles.x402tookit.com/mercator-project"
    ]
  ],
  "name": "Map Tile Maths",
  "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": "Convert latitude/longitude to Web Mercator EPSG:3857 metres, or metres back to degrees, with scale distortion.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "latitude": 51.5074,
              "longitude": -0.1278
            },
            "type": "http"
          },
          "output": {
            "example": {
              "areaInflationFactor": 2.5813,
              "asOf": "2026-10-12T00:57:24.749Z",
              "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.",
              "latitude": 51.5074,
              "longitude": -0.1278,
              "maxExtentMeters": 20037508.343,
              "notChecked": [
                "datum transformations (this treats WGS84 degrees as the sphere's angles, exactly as EPSG:3857 does)",
                "true distances: Web Mercator stretches distances by 1/cos(latitude)",
                "…1 more"
              ],
              "reasons": [
                "Web Mercator scale grows as 1/cos(latitude), so areas near the poles look far larger than they are."
              ],
              "scaleFactor": 1.60665,
              "source": "computed locally (spherical Mercator on the WGS84 radius)",
              "summary": "51.5074, -0.1278 is x -14226.63, y 6711542.48 metres in EPSG:3857; map distances are 1.607x real here.",
              "verdict": "CONVERTED",
              "x": -14226.631,
              "y": 6711542.476
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "latitude": {
                      "description": "Latitude within +/-85.0511 (with longitude)",
                      "type": "number"
                    },
                    "longitude": {
                      "description": "Longitude -180 to 180",
                      "type": "number"
                    },
                    "x": {
                      "description": "EPSG:3857 easting in metres (with y), within +/-20037508.34",
                      "type": "number"
                    },
                    "y": {
                      "description": "EPSG:3857 northing in metres",
                      "type": "number"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "areaInflationFactor": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "latitude": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "longitude": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "maxExtentMeters": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "scaleFactor": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "x": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "y": {
                      "type": [
                        "null",
                        "number"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:35:42.33Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T23:35:42.069Z"
    },
    "resource": "https://map-tiles.x402tookit.com/mercator-project",
    "serviceName": "Map Tile Maths",
    "tags": [
      "mercator",
      "epsg3857",
      "projection",
      "gis"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Convert latitude/longitude to Web Mercator EPSG:3857 metres, or metres back to degrees, with scale distortion."
}

What the leaf hashes

{"body":"ec33fd4213921763ab2d86216c483774e8608fe81345f118552c438508ecb1f8","id":2201626,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646806941056,"prev":null,"subject":"x402_bazaar:https://map-tiles.x402tookit.com/mercator-project","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. 0xf59e0f2f754fcc96f767793efcf1dde74c3c28e3a4e986935763fa1694a8eae4
2. 0x779e0ab8fe19e609f017a4b5d5b27dbf1087cadb180c772c627317deda5d4c4b
3. 0xe8263b10c2cbd2ed2366da6fdc13de64211fee963a786d183aa88c0f0094ff35
4. 0xe2401a7674f61fe2118aa46dd54cc1b595966e21585e152a1332d2cb9fd9c21a
5. 0x479b8c9f1e730e0664f3d9a24df2c2c99a2503a5dfe57f84442ab10cdd0e6375
6. 0x24f79c4297007d234c7afcd4f68ff1c003778da3b0d05eb99d736e05d9a0f862
7. 0xb447361a57ace5729a5382b5d5b14195f2418b4c90ebb111309d50423f427601
8. 0x486421c342c16a375233c1dbbd7af589e07b40a397e1ad62b9fc7b2ee1510b86
9. 0xe8950902adefaa6f9aaee0eb07e7c7e997636a7e33f5322c10b8835c48907697
10. 0xe9f55a1c526ca437aba9070d317820145b9ffb519d8e58da32146c292244a27c
11. 0xf88ffab9e660a2924ea3deb734ff7cbd058ff96c1f240523e0e20994eee49632
12. 0x357b8b944aeb5a828c72699fe2ac56982a5ebd57521270f90ff495bcf87b9654
13. 0x54a66ecba86fe13527453978f73a6a3d80e1817889872b25f2a79c90d4b86982
14. 0x70f4b5a4c6a4de9977aecf5fbe7497e271e9e2f9e5068c7dad5953e8fe898b30
15. 0x4068a4306db47ea0eae5f76e5137753caa3dbb132dca6a61a4d6c1838a52700f
16. 0x25127db2e775737b2874f6a159f7c1bf984317eea6482e94589c3ef4c5ccab32
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af