Evidence row 2204318

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mitteleuropa.halowerk.com/v1/at-soil-nitrogen"
    ]
  ],
  "name": "HALOWERK Central 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": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "6pXwvPgqduMSx33GP8jiVCanpUhZZiPPyG784mNJ7q1Z",
        "scheme": "exact"
      }
    ],
    "description": "Mean SoilGrids total nitrogen for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Austria; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 48.2082,
              "longitude": 16.3738
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:25.168Z",
              "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": "2026-10-23T02:05:25.168Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "at-soil-nitrogen",
              "service_id": "eli-0392",
              "status": "success",
              "summary": "Austria: Topsoil nitrogen: 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": "2026-11-02T17:21:35.703Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:21:35.464Z"
    },
    "resource": "https://mitteleuropa.halowerk.com/v1/at-soil-nitrogen",
    "serviceName": "HALOWERK Central Land",
    "tags": [
      "land",
      "europe",
      "country",
      "at",
      "soil-nitrogen"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Mean SoilGrids total nitrogen for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Austria; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"49885b77e57a314a808cda3bbbaee48eea8e2f57a72c057256c293d20a77a37d","id":2204318,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646900953296,"prev":null,"subject":"x402_bazaar:https://mitteleuropa.halowerk.com/v1/at-soil-nitrogen","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. 0xa4961e94185f7d56fa1f7b6de150d34cdbb7d27a6629636ac541437c8cc46bd4
2. 0x96d7d8c0b881ef53266a0304007b75d9166d1f30bd58ced33ac3bf96f61c1a32
3. 0x2a8bb6239a8e5edb64cb2e4f58bdc5d191ed49ded25102ae242940896a33c6c9
4. 0xf5cf2b3af094a71df5ff029e473314f10fb41488a74114d1dab914d1aa589462
5. 0xd9a3d42cc7893356e5230f044f51946fa7d90dc1ae28c39b04adbfe535102894
6. 0x448b6f34cd5953cc84a3fd05504c458014e58e98ae30abdab8c320a49eccb366
7. 0x7537b7bf375fd5b8dd7c4852b7d564d0e030ddccab4555a44ecf243a57ac4a94
8. 0xd157d4e58f8487aeb5fd10c56bc25b1cfa1ef8ed01c478cd5b50348537b9d5ab
9. 0xf867ceef2caef1eaa1149818b88094909e692a76f546faed2297fa3389dc2e60
10. 0xfc7ad9afbbac97f76a35d3390edc7f653cd595dfe3cc2a6222f638c1f3a0c758
11. 0xae83773c274e2510d09849ea89d30d6342c0fcd8e2b9d4f69be4ef2a70ec48bc
12. 0x3b9fa510ea9315fdb1f69663279e291312bab8c2c0d958c0da2bd30894c945a4
13. 0x6959682af8334329ff865c5705b67dd969fc79c93745d2bb5b28573810cfc1f1
14. 0x44d08992eb52b7db0b3504ba234d634742d61c21889da1eb00242ce07e97334b
15. 0x7abf7290721a0b95be706db03c09de9df65bcba8e18ffe4616da43d9c31d6b0a
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af