Evidence row 2204461

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://atlantikland.halowerk.com/v1/ie-elevation"
    ]
  ],
  "name": "HALOWERK Atlantic Land",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "6pXwvPgqduMSx33GP8jiVCanpUhZZiPPyG784mNJ7q1Z",
        "scheme": "exact"
      }
    ],
    "description": "Bilinear surface elevation from Copernicus DEM GLO-30. The coordinate is validated against the Natural Earth boundary for Ireland; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 53.3498,
              "longitude": -6.2603
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:22.505Z",
              "confidence": 0.87,
              "confidence_method": "Conservative minimum source-family basel",
              "data_date": "2015-12-31T23:59:59.000Z",
              "evidence_classification": "derived_from_open_geodata",
              "generated_at": "2026-10-23T02:05:22.505Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "ie-elevation",
              "service_id": "eli-0251",
              "status": "success",
              "summary": "Ireland: Elevation: source-backed screen"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "$schema": "http://json-schema.org/draft-07/schema#",
                  "additionalProperties": false,
                  "properties": {
                    "latitude": {
                      "description": "WGS84 latitude inside the published European coverage.",
                      "maximum": 72.5,
                      "minimum": 34,
                      "type": "number"
                    },
                    "longitude": {
                      "description": "WGS84 longitude inside the published European coverage.",
                      "maximum": 40.5,
                      "minimum": -31.5,
                      "type": "number"
                    }
                  },
                  "required": [
                    "longitude",
                    "latitude"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {},
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type",
                "example"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "payment-identifier": {
        "info": {
          "required": false
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "id": {
              "maxLength": 128,
              "minLength": 16,
              "pattern": "^[a-zA-Z0-9_-]+$",
              "type": "string"
            },
            "required": {
              "type": "boolean"
            }
          },
          "required": [
            "required"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T16:59:27.058Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T16:59:26.681Z"
    },
    "resource": "https://atlantikland.halowerk.com/v1/ie-elevation",
    "serviceName": "HALOWERK Atlantic Land",
    "tags": [
      "land",
      "europe",
      "country",
      "ie",
      "elevation"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Bilinear surface elevation from Copernicus DEM GLO-30. The coordinate is validated against the Natural Earth boundary for Ireland; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"e1de0ddd1ebb6376bfbf14274b9b6ef0a9474ff3c0a974ebcb349fb382131af3","id":2204461,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646905816150,"prev":null,"subject":"x402_bazaar:https://atlantikland.halowerk.com/v1/ie-elevation","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. 0x78afa0ebf00604d3f46eb609e1b3e36539da56164d44c4dd7d99b4741169a215
2. 0x930ce1faee3de1691f3be1216f936335c6b5fe5145518eebede935d4605e4992
3. 0x1f7c3a4d826320554a86599a5bf229d7c2a4bcd4ef0e7397a3de6ade8ece1cbf
4. 0xe6de853ad02fea85f2f5d35a0b3356456ea91c64b810532eec480d180bcbe4ec
5. 0xb6e08f0fe9b49952678a37573c60560704f81a0855b4ef6fa53ff56399ce1145
6. 0x25a343453dd9aee424c4e24770fe6937584fe17770c5462e765e226d55a9028c
7. 0x5afa05d0f1091b1072967cba4a7365fa8af69038eea6e0e704a531b196119053
8. 0x007bef8efc90af3054fe5bccc48cbcd6f49ee9e2cdad3f3b10e90406505d3f5a
9. 0x201a44293033fe954b46c2375370d7f247ca31aa9929d9a16b22f0a7d297f7fe
10. 0x7dc9608efd4ee58e1a98a1bac042f143c4e689e6ff84f2ed3eb5fe1e1cfdabca
11. 0x713c73620089eb4d1a0bafb80296859933cab4846fe01927f4a6c26c61541dd6
12. 0x6a5525c1d945ed75b00811393657c28cf06b7a9f2c841743bc74d1568a7e6799
13. 0x6b3fe16d0ef17e7fec65e784ea66cb7142a8765f3978756ef310ba9d8f928afc
14. 0xe387a7d610f91d4dc112f2dbdf7ae32c4555f5da4c25c1a9a1310d0b74e80bbf
15. 0x60dd7fd8117cbf3b80707f722623736c8c2b5b56277e8e78c9f81ef2dab8deab
16. 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af