Evidence row 2204406

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://suedland.halowerk.com/v1/mt-local-relief"
    ]
  ],
  "name": "HALOWERK Southern 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": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "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 Malta; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 35.8989,
              "longitude": 14.5146
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "authoritative_status": "preliminary_non_binding",
              "category": "country",
              "charged": false,
              "checked_at": "2026-10-23T02:05:29.062Z",
              "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": "2026-10-23T02:05:29.062Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "mt-local-relief",
              "service_id": "eli-0606",
              "status": "success",
              "summary": "Malta: Local relief: source-backed scree"
            },
            "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": "2026-11-02T17:06:03.819Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:06:03.489Z"
    },
    "resource": "https://suedland.halowerk.com/v1/mt-local-relief",
    "serviceName": "HALOWERK Southern Land",
    "tags": [
      "land",
      "europe",
      "country",
      "mt",
      "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 Malta; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"c4b478bd35a88dc3b4413933af555269b2ee0f55498290c03924819e002a9f37","id":2204406,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646901928351,"prev":null,"subject":"x402_bazaar:https://suedland.halowerk.com/v1/mt-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. 0xf29e77b6f243416add2e80fd8760f0fdea9be482ba5c53c5d843f9369b73ea6f
2. 0x6765d63afbd10fac49c3bbe86e77d8a1256c96cf5e7b0e8e1902829b58594cad
3. 0xde3c670e2a60f386f4cea0d3f19da990394ad179108fc200f37d4594a5814e46
4. 0xe8cb869b01e2013d0ad97ab490d4d641ddcd5fb13aa718be70e600ae70e3889f
5. 0xbad3ba1dc428cbb51f8a3900b230bc9de16b2482ddd9050e910ec6dea349aeb0
6. 0xe995e26ecb2502c80a2d7c16afe3e4812c59514e96f4f28a8693441f0ca062e5
7. 0x17d73ef1dfbfefc5c867f8308dc6d7f4c77bf2921878a105ca99d47265e000c6
8. 0xc6416ddffc16fbc27a2b998b9a3678ffc4bca72c97c12852bb44dcfb1d5283f8
9. 0x7030fee0fb194aecf49633ea93089f1a651d6bcfcd1f806c5bbab6fa7e5e36ee
10. 0xb7864464cdbd8c4c814c5ac407768a3812dc369816cec2ee8e5ba5340f0c8e8f
11. 0xb71e3e9a67a0c294372a88b48b87101df36acc8365e885c412b58f1e014478fc
12. 0x584982b94b1f05a18922bba3f8ab6e95e0114fb1590617618d3c011faac442f3
13. 0x50f257017d1a47b165e9de41b6c7be745b632a9ae0d6de998c4ca2182e3793b3
14. 0xfa8b123f46e2c0606637c2fc0bef7815e7e004938cca6b86fafd908901f0b35f
15. 0xde6a8fd6590b70565baa6078cbc8add8d94950fe959ebaf8c3716adcdbd78aa8
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af