Evidence row 2204450

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://baltikum.halowerk.com/v1/lt-max-slope"
    ]
  ],
  "name": "HALOWERK Baltic 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": "Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Lithuania; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 54.6872,
              "longitude": 25.2797
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:21.397Z",
              "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": "2026-10-23T02:05:21.397Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "lt-max-slope",
              "service_id": "eli-0178",
              "status": "success",
              "summary": "Lithuania: Maximum slope: 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": "2026-11-02T17:00:56.336Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:00:55.59Z"
    },
    "resource": "https://baltikum.halowerk.com/v1/lt-max-slope",
    "serviceName": "HALOWERK Baltic Land",
    "tags": [
      "land",
      "europe",
      "country",
      "lt",
      "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 Lithuania; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"d23887507d4602266798e7e7afd8a7092d815058e9eb03d6e04a65126badafa8","id":2204450,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646905780627,"prev":null,"subject":"x402_bazaar:https://baltikum.halowerk.com/v1/lt-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. 0x50605d4c618e47511d106e4d7841490b42e39b197ea97c196fbab29c131f60d2
2. 0x80ef73202a701739e3149d37f4e754a2aebfdad924c3813a0b3e92625a3e9758
3. 0x0d355843350028c2ee4266768ad1edfcd183796c88b367ade5f2ad896369f3a2
4. 0x3285c9b9c4144789fec371ac53680257b6d5927e4abeec328e786615d1d064f9
5. 0xadfb32da7a9531f388499218a71b0bd11946c2cebd61418489a232938e25e0d5
6. 0x62066c3684ffb2cbdc530b489ff06380f98b445f485737e785195f2e90d6f761
7. 0x020dca3dfdc23647cea05a304704e83ca747d9d145c17d2b5c24bad8b0485116
8. 0x683eee465b8843be7dce862937eca005901e7ad2cf5d19011e644b551858cfa2
9. 0x261654b93ea7aef180cc6ffeb0ab211e1c393f4c03e995f57a7b88e73418a982
10. 0x605e3971d6d14e252545bf385dd09b36681487c7f47c6db0754cf709e828692f
11. 0x3f5fffad2668ae3c9ceb042c4134cd873b781240805b82b02ea21269e35be287
12. 0x35f84c0e4e28cd4a63c3ad6490420fe24bf67bba5f080e714a71d6cb0d991695
13. 0x2f0e87a22fc6aaaa04d17a8f1c5dda340b8d3c208a1b8e26986aed7f54ec42a7
14. 0xa96ecfe7ab9f1788120ca262a1b69b7b258160df41b4041d36fcd211c95d26d9
15. 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af