Evidence row 2204362

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mitteleuropa.halowerk.com/v1/sk-local-relief"
    ]
  ],
  "name": "HALOWERK Central 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": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "6pXwvPgqduMSx33GP8jiVCanpUhZZiPPyG784mNJ7q1Z",
        "scheme": "exact"
      }
    ],
    "description": "Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Slovakia; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 48.1486,
              "longitude": 17.1077
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:26.165Z",
              "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": "2026-10-23T02:05:26.165Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "sk-local-relief",
              "service_id": "eli-0431",
              "status": "success",
              "summary": "Slovakia: Local relief: source-backed sc"
            },
            "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": "2026-11-02T17:17:58.18Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:17:57.927Z"
    },
    "resource": "https://mitteleuropa.halowerk.com/v1/sk-local-relief",
    "serviceName": "HALOWERK Central Land",
    "tags": [
      "land",
      "europe",
      "country",
      "sk",
      "local-relief"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Slovakia; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"536757569ac0b9082979ff50724005ca66fec39a133e2cf5de32cfe56a567274","id":2204362,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646901124026,"prev":null,"subject":"x402_bazaar:https://mitteleuropa.halowerk.com/v1/sk-local-relief","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. 0x5e1b2b94cf1154233c3eea246ff6bf5a72444ad42bb14ff8837dfc14ba244fa0
2. 0x5070f634c6d5e512cd65f4985cfaccd396bf4e20b64336a9bf70b706107ffbfc
3. 0xf30e7c4656d8e1c4e83ffa7e2c245370b8bf7f899e14f0fad0c1aed0103a4cc5
4. 0x3e6e2da8e4407adba6645399ceb877720749e9b9e4e068458cd912a8c7bb6fe6
5. 0x3bbccabaf2e8eef12c549711e7a7d370794457bb1ffb857fe200e5166eb0c863
6. 0x097deb66f90e5e9a9822040618b4e3c615a7bab4df9cc26b61d082e020e66384
7. 0x0e91c74de17078eac03e80d17d4252a632f97dcf57285c9bbd5a8cb66887725d
8. 0x3a85ab3d892fae9e7330d4f0b2b7a0f6dccf4cdeaec5dd3437612400d815b185
9. 0xb8b38853cb01739446ff65cc83d2d85feec86ea7669e12b8f41cb692a955e6e5
10. 0xbdcddcb07c6dc877e68bef68c9f74567321ed81e22ac981d1fee798808033c48
11. 0xd083b411f3fe275fdc35527e7faa302d7df9c32fd63b8a3beaa0857f9aea141c
12. 0xfdde22dc0ff8090b6068b0dcf3aba740d9ea8edcee4ae8d3c3441afa11bcf422
13. 0x0f0789866ea2f1bd292c9e7a2eaf20360ccfd54bcd03afc0a8ce21b6555e86f5
14. 0x463370b8390b2f93f44023fe6ce3fd4ebff0a7fecb7894dd4f82f8253ec8661f
15. 0x52242d46cadab5f421a6f86c1edc6379b085ae98482fa80904e4a3028c1849a3
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af