Evidence row 2204391

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://suedland.halowerk.com/v1/mt-ruggedness"
    ]
  ],
  "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": "Standard deviation of sampled surface elevations. 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": "2026-10-23T02:05:29.039Z",
              "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": "2026-10-23T02:05:29.039Z",
              "result": "measurement_available",
              "risk_level": "not_applicable",
              "service": "mt-ruggedness",
              "service_id": "eli-0605",
              "status": "success",
              "summary": "Malta: Terrain ruggedness: 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": "2026-11-02T17:07:02.441Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:07:01.469Z"
    },
    "resource": "https://suedland.halowerk.com/v1/mt-ruggedness",
    "serviceName": "HALOWERK Southern Land",
    "tags": [
      "land",
      "europe",
      "country",
      "mt",
      "ruggedness"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Standard deviation of sampled surface elevations. The coordinate is validated against the Natural Earth boundary for Malta; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"ca8e8afd71903996dfd383dac9d57d80cbb6c8e6b9bfb73db824a15a6521a6d7","id":2204391,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646901738426,"prev":null,"subject":"x402_bazaar:https://suedland.halowerk.com/v1/mt-ruggedness","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. 0x956450247bea98cf0d4966b5cc1de5115e04f5816ca4b0f6ac7cc1542fc8c5db
2. 0x096cbd4b2c4c27cc3ad932d3ba9e324a95125c6ead0895881edb8baa98e92cce
3. 0xbfb8c45196b70a39294972236d2066b858976855eb9ab00dd0b4eeff87628484
4. 0xbb656f19290677c0dad71c4cd27a7eab12b3efbc6a1132c23da61f07471d60d7
5. 0x3cca507e2a1c9f989f7d71c5bab985911f7ced4c366cd1c461918efff2fd4a7e
6. 0xe304d025a8f41260b4d94fcb1952d888cc5267df55105de553a921320d6a2871
7. 0xada82217ea64ed7807c664b01a4ae4715d228afe829da2dd9deb62ebf7cdc7c5
8. 0xa5c62ba68dadc97b5a64a0268a35a1e482e4198b2102bbea8c74f5add9aa6d75
9. 0x60de11bbd41d274879046660ff642baada198cd2fc1ce2df723faf270ab3276d
10. 0x59dbb3ec63cd02e1a2642e21d00eef72e8f7815a31f6858afdd4607fac843fe7
11. 0xefe11a1343a9c2d7a93b447d104bc20b288de6e17292fa152c6543657640cb1c
12. 0x93a479000997489c9f10f23b0bab5b0ff25afee590d626a4bbf85ac315b6178f
13. 0x80c229343462b4db0b5706d7cf049c63be6fca4613d1e49d2d90b6c7dd36074e
14. 0xece99d4dfafa93913edbe131eb22b3d7ab2648b58b5bd9dcd361be4f8953b107
15. 0x5d92631d189bd0292c27a05f85a5ec38ec5f4197dfe4660eb991dc6a511e25a6
16. 0x5e23ec5954c11a4530aab8c635a72b12bcfeb6fcb03c6cb1a990cc1743424543
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af