Evidence row 2204449

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mitteleuropa.halowerk.com/v1/li-max-slope"
    ]
  ],
  "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": "Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Liechtenstein; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 47.141,
              "longitude": 9.5209
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:26.666Z",
              "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": "2026-10-23T02:05:26.666Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "li-max-slope",
              "service_id": "eli-0478",
              "status": "success",
              "summary": "Liechtenstein: Maximum slope: source-bac"
            },
            "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": "2026-11-02T17:00:59.767Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:00:59.522Z"
    },
    "resource": "https://mitteleuropa.halowerk.com/v1/li-max-slope",
    "serviceName": "HALOWERK Central Land",
    "tags": [
      "land",
      "europe",
      "country",
      "li",
      "max-slope"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Liechtenstein; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"54d96daf4e87ebb596fb5d8cafd1ca4bccdb8638b3a42d48c7800c527116fde9","id":2204449,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646905777984,"prev":null,"subject":"x402_bazaar:https://mitteleuropa.halowerk.com/v1/li-max-slope","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. 0xdbbcd6e54fcebfec2c719727ff8abbb92d32ea843ddb61acab3903905d10fb78
2. 0x3e2922e5237ce0d69f74dc5e3f70b7e68197a38de3605c7b6dad50be893caf1c
3. 0xd35c239476b518eb98f4cd966a25106fe8dd8c4de3d9aa0df11cb1a70a055e3c
4. 0x9325c79ca3913b74a19bcd189a3e53b251f7f65b9e93496719c2417ba47dc283
5. 0x0f195f67113be7b383d87ece356ebf80537a0753a5e2f1e57cb7fb2edc6e05e0
6. 0x69f03a29cb25fbc454eac06c7b039a4daaddbf6e7cc91c53d8810fe80b8cd7e8
7. 0x434ec153775e49be44a436312f3f157f7716a900092c273d1b4c9299ac72b2dd
8. 0xceb66b265410cf66966b54efe26f085809536deed0bae2acbb4329eabc245aa3
9. 0xb3c630e665e163b84dea4f20d557e27b365ceb754eb8f27bde267c2ff6af6c02
10. 0x7a496ad5caf365bb5f11fdc1424e19de5cce094b069518606496f0d7394ceb0c
11. 0x7875c12cd9501233f24e29a6f6cef2c2c51a4b14b4c1f113788bae170da71116
12. 0xdaed05bad2a1cdaa5f52d32d403aa69b5ad3e42c64c1772d4dd5905889bf2276
13. 0x4d734793ac74750cbdf1c30c6305a901fe0ac2ddf5819c226b382460e68290cd
14. 0xaed7c1080b4ff0b1fc4f851df0f2b8b4ef86b106015aa3aaf8da39a641c41a3d
15. 0xa370e8e015a32408a8112e54e5f40a8a65e871bd52bbc6f25fbd1139f2ba5b11
16. 0x7ddefa7d79e7640c3fed21ee4472689415182c41a0258ab04a81d60495f4c40a
17. 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af