Evidence row 2201685

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://land-survey.x402tookit.com/polygon-area"
    ]
  ],
  "name": "Land Survey Screening",
  "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": "Area in acres, hectares and square meters and perimeter of a polygon from lat,lon vertices, e.g. a parcel or flight area.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "points": "39.7400,-104.9900;39.7400,-104.9850;39.7360,-104.9850;39.7360,-104.9900"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "acres": 46.989,
              "asOf": "2026-10-11T03:48:09.166Z",
              "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.",
              "hectares": 19.0158,
              "notChecked": [
                "self-intersecting polygons (area is then meaningless)",
                "legal boundaries or survey-grade accuracy (spherical model, error well under 1% for parcels)",
                "…1 more"
              ],
              "perimeterFeet": 5723.8,
              "perimeterMeters": 1744.6,
              "reasons": [
                "Area on a spherical Earth from the vertices in order; the polygon closes automatically."
              ],
              "source": "computed locally",
              "squareFeet": 2046839.8,
              "squareMeters": 190157.6,
              "summary": "46.989 acres (19.016 ha) with a perimeter of 1744.6 m.",
              "verdict": "COMPUTED",
              "vertices": 4
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "points": {
                      "description": "Vertices as lat,lon pairs separated by semicolons, 3 to 40 points",
                      "type": "string"
                    }
                  },
                  "required": [
                    "points"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "acres": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "hectares": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "perimeterFeet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "perimeterMeters": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "squareFeet": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "squareMeters": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "vertices": {
                      "type": [
                        "null",
                        "number"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:32:44.354Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T23:32:44.186Z"
    },
    "resource": "https://land-survey.x402tookit.com/polygon-area",
    "serviceName": "Land Survey Screening",
    "tags": [
      "geodesy",
      "area",
      "acres",
      "drone"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Area in acres, hectares and square meters and perimeter of a polygon from lat,lon vertices, e.g. a parcel or flight area."
}

What the leaf hashes

{"body":"ac234ab3fa70be48c12af9e7f891deee9a27afa1122dcfa079404794a28c70a6","id":2201685,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646807858878,"prev":null,"subject":"x402_bazaar:https://land-survey.x402tookit.com/polygon-area","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. 0x3b22f7bc7446b1b1690b29f5d5caf41f2aaa01d0bc843c8ee42acc0bc624aa7a
2. 0x76acdef0f97f98dbaf152edd43e14e8b9b5b388eeaf066d8bc8bb9008eaa2db7
3. 0x5bcc3c88470fdec42ef088db8dd902f4ef5f1339bc59cf07356766b69b724aa1
4. 0xe1ac310cb4f5fb4e4f2914d591a32175e6936e99df32df4770a4ff1de8233916
5. 0x727f1c90478c87c4264554c9db0f4e38c060f8180b9f4348727b3f58221714cb
6. 0x4eea9a884c98625004d054a36c2edcaad46366adb7044c27996952e224a3efa9
7. 0x300241d2dae0ca561c630d7af88c4095178d462bd38b73f5031601b324f22396
8. 0xbaae39e14b3bd941c8a0d8a2c6ae9173e6bf4967c71a78f0d07329f637ea1487
9. 0x31ac89a6e5ca62cb93bedc072b97072f608b813f04b35027e45af45656361ad0
10. 0x55c677d32ff6a20b58dcad74ef0229761486f2ec5d5ec05004d605e14ca729b4
11. 0x35d8466a1b1164401e37eab603d7f1f3a41843b2a82e92a0df1a2ef7ee3f2198
12. 0x066ca260f44392bd6f2d8db1214a53c03dfa715357ef60f9784f111e11047120
13. 0x507a2180313be0729754aef4a9f5ae0f5f1b96b322bfe83831a668afc9bd9d5e
14. 0x637ba5f029eadccf80c2665ace422cf50802b8ffd21717811c25c8f068f65dc8
15. 0x8448bd1fe3c2d48b62a118ace4a5cb82fee53586dd43d776c2526ad844398919
16. 0x8760c227928c5295506cd8606e763f86cf8cd2a549820fab4dc86d29ca0d816d
17. 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af