Evidence row 2204373

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://baltikum.halowerk.com/v1/pl-drainage-tendency"
    ]
  ],
  "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": "Relative runoff tendency derived from slope and ruggedness. The coordinate is validated against the Natural Earth boundary for Poland; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 52.2297,
              "longitude": 21.0122
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:21.877Z",
              "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": "2026-10-23T02:05:21.877Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "pl-drainage-tendency",
              "service_id": "eli-0209",
              "status": "success",
              "summary": "Poland: Surface drainage tendency: sourc"
            },
            "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": "2026-11-02T17:16:34.256Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:16:33.982Z"
    },
    "resource": "https://baltikum.halowerk.com/v1/pl-drainage-tendency",
    "serviceName": "HALOWERK Baltic Land",
    "tags": [
      "land",
      "europe",
      "country",
      "pl",
      "drainage-tendency"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Relative runoff tendency derived from slope and ruggedness. The coordinate is validated against the Natural Earth boundary for Poland; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"f41f6eba6d9b93b5d18a88fa53d27e94e384047fe1b407a558d65bc3f8d7b340","id":2204373,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646901673774,"prev":null,"subject":"x402_bazaar:https://baltikum.halowerk.com/v1/pl-drainage-tendency","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. 0x055d4b1859c57f8464cc6b89a887d358646b3ed5737f3e7b6bf7f523f5a010ee
2. 0xd35e2050412354b464548f6ef72e3dc50b47a4ea5106b9977b7f20be87cf582e
3. 0xb1dc6f0cefe01660968df4a37ec7d2299b7b4530ce54786533fbfd8c7eabf4e9
4. 0xcd24216efd25f424d52fffdd56f4d8b29156eba064c634ae89389862137ba380
5. 0x3227388e9d484d76da928fe6a2801d016e12db0719d6b8031ddf46805d75798a
6. 0xd4fc01bc752e56f013db0e0278ae407d383fbdfe01834e1349550504521cb90f
7. 0x9628158615bf0da5ee9d87ffbdccc951445850ff21ec39ea79fe372564515333
8. 0xa9adb121a9926e55f1f7159d7469ff01346a9d4543d2aa62cf50d978d72ad351
9. 0x284ef5e6e171407af9df2763fec45869166eb1be2bc9bd17d0de7680521f184d
10. 0xf2a4866d5af8e4579f0159390752e163e1a5de3be23e11521dedc6ba245830fe
11. 0x74a6369ff44f91898cfaafb5a527e14851cf7d8cf615f868cee36fe764b35944
12. 0x0aa954f5db495a61a9f2c9a29bad626fca6816d6a493be53cfa80c4c49e4ee33
13. 0x09c4d50cc90ae90d0e870f84d23642d3d078e94f56d566d69c068b9edb2aec5c
14. 0x66ec51993542849e8bb0ec95d77eba3d6a82a6a4fd1696c4d0ddbb7a693845aa
15. 0x150a4dbcf309a6bb857da0b59f7588bd57a20fca094e579bf41d6cc6df9c7bff
16. 0x7cb861d18f06406535ade133f716d897f27d257cf0121f99d94c78c713c4b54d
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af