Evidence row 2204173

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://atlantikland.halowerk.com/v1/lu-soil-sand"
    ]
  ],
  "name": "HALOWERK Atlantic Land",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "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": "4000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "6pXwvPgqduMSx33GP8jiVCanpUhZZiPPyG784mNJ7q1Z",
        "scheme": "exact"
      }
    ],
    "description": "Mean SoilGrids sand fraction for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Luxembourg; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 49.6116,
              "longitude": 6.1319
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:24.550Z",
              "confidence": 0.73,
              "confidence_method": "Conservative minimum source-family basel",
              "data_date": "2020-05-01T00:00:00.000Z",
              "evidence_classification": "derived_from_open_geodata",
              "generated_at": "2026-10-23T02:05:24.550Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "lu-soil-sand",
              "service_id": "eli-0362",
              "status": "success",
              "summary": "Luxembourg: Topsoil sand: source-backed "
            },
            "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": "2026-11-02T17:31:46.494Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:31:46.268Z"
    },
    "resource": "https://atlantikland.halowerk.com/v1/lu-soil-sand",
    "serviceName": "HALOWERK Atlantic Land",
    "tags": [
      "land",
      "europe",
      "country",
      "lu",
      "soil-sand"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Mean SoilGrids sand fraction for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Luxembourg; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"ed0ce67575e58dba12b698d519acad29fed91de6df5b722099f8271ed71147ed","id":2204173,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646898962743,"prev":null,"subject":"x402_bazaar:https://atlantikland.halowerk.com/v1/lu-soil-sand","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. 0xe3a1f6ea5e487ad7990a97977b46b66039ce182fc2b85eefa92be2bfdea6e006
2. 0x2ec71f17e98cc4d01ccf2ee2fa00bb744db26a21998d7b28782b5612c3e21ec5
3. 0x6d3be28dd979057111fb423d0f49ab13cad249a25b320152dedc4ded2ae06e0b
4. 0xad66bd8d036fbc465e0be4c3e37b912e57f8b01db0cb2ef1d04e96d966445b1a
5. 0xa3f6ef329e4e4ea65c1ed8f1fefcec4ea15064839c87b68c8a08af1aec0f0ce0
6. 0xd776b0a6308aaf5caa98352f1eb28e99d0f4d15487bf9aad498502dfc5028d43
7. 0x5d2e5e37f2fd1bb7342956706ec3771253ffc6ec81f46b82b784a8b050bdf460
8. 0xfe5a0953fffe6045f1642b64ce46fe883f6e2273ac894b41d935ea4a36e6b62c
9. 0xef95579d3e1fcb8349cbe27df89e9eb203fe2fa2a8e263614dc0c88164e46dfe
10. 0xcf683a89b770dc52c071f35400ee5710fb606d9fabe70e32fa7432d8fca732b4
11. 0x5c9be338678c5f20e9141e4b4213baa51419ff68f4fd55126839956d9b71fc19
12. 0x22bf176b50c1376a81c95eb70dd7c6a4714266ec78d08fbb68be60b003a0354c
13. 0x5dd9fbf811b05f3e5af51f812b6eea86a039a192f115aecc0fd37a502e3a04f1
14. 0x3e441d3f53c7b69d6c73ef93d327dfc3071a522c550856540832b34fcb531738
15. 0xd643f764eee39146411d4bff8903a327f4f8f55616e14e57281a245206d6ed2b
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af