Evidence row 2204371

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://nordland.halowerk.com/v1/se-drainage-tendency"
    ]
  ],
  "name": "HALOWERK Nordic 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": "Relative runoff tendency derived from slope and ruggedness. The coordinate is validated against the Natural Earth boundary for Sweden; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 59.3293,
              "longitude": 18.0686
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:19.074Z",
              "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": "2026-10-23T02:05:19.074Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "se-drainage-tendency",
              "service_id": "eli-0059",
              "status": "success",
              "summary": "Sweden: 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": "2026-11-02T17:16:37.679Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:16:37.467Z"
    },
    "resource": "https://nordland.halowerk.com/v1/se-drainage-tendency",
    "serviceName": "HALOWERK Nordic Land",
    "tags": [
      "land",
      "europe",
      "country",
      "se",
      "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 Sweden; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"beef5938ccd217b8477d0eb2dc00d49158e28877de81a5e837ee30ed7ef19d60","id":2204371,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646901664628,"prev":null,"subject":"x402_bazaar:https://nordland.halowerk.com/v1/se-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. 0x9036ea9d8886d8b2bf38332695e250d9d9482f1f90efab9d6ef568f84addbbc0
2. 0xa31d85877d044fea0086b19ec5216ae520447a7a1cafdc98f4192e2c04144e48
3. 0xb5cba030d744ca66f401c6ff4061705d1a68c1357b4321a764c3a89b7d6886f0
4. 0xe5ca23214babbfd25a2b803065a83d51b0005d9730fd7a27ae897283d1a1a7b5
5. 0x6caaa066f06a75af07574a84a172528c8494b8c20c1232ffbbf230daf4d285bf
6. 0xfc38b5c633bba147f527ebd8284035f810e315db10f7595d1ce8d92909a232ad
7. 0x22f70705b7d89e6a9268b254014a3ad3188b0760cf0122ec673e64bf3d800ab2
8. 0xe62a712a21b715b488b0361b6886b8c550b42a95c16bef5ab4e374d0c3d424bd
9. 0x6575d00c3b298c309e975b71106c89d9c848813097575f68981a67eff12f50a6
10. 0xe1e71a2a494b2190f13e6d3718bd9b39fcb00cefd2f49ab684db98074b7fed4c
11. 0xf7b335097508ee8bf9a9421eb3e38f8c8156af4ae4502105f8f8caef64bd9d04
12. 0xcc41efda675fd5f31ee9b82e2920f27c5b96c51ec4eacef941b7e4116cbf2ac5
13. 0x680e2eb544f0b0d7118b76ffef0a533f49c97860e3c70eaa1d07167760b4968c
14. 0x3f15e4f2fd3ab4091e7284edf8bfed23163b8ef6b0c8fdbd458a498a9bb35a32
15. 0x5d92631d189bd0292c27a05f85a5ec38ec5f4197dfe4660eb991dc6a511e25a6
16. 0x5e23ec5954c11a4530aab8c635a72b12bcfeb6fcb03c6cb1a990cc1743424543
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af