Evidence row 2228389

Observed 2 Nov 2026, 19:23 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://ostland.halowerk.com/v1/ro-tree-cover-share
Recorded: 2 Nov 2026, 19:23 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 4129bcbbb9e064e2ee6719eff810d33e4cbbf7ae3e0165175fb33510e7a7716f
Leaf: 0x75c0de108dc9b2737cdf5aa1224d73f526c86884f742dd454a6ee5fe0183fda3

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ostland.halowerk.com/v1/ro-tree-cover-share"
    ]
  ],
  "name": "HALOWERK Eastern 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": "Share of ESA WorldCover 2021 pixels classified as tree cover. The coordinate is validated against the Natural Earth boundary for Romania; results outside it are rejected before payment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "latitude": 44.4268,
              "longitude": 26.1025
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "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"
            }
          },
          "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": "2026-11-02T17:19:39.866Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:19:39.587Z"
    },
    "resource": "https://ostland.halowerk.com/v1/ro-tree-cover-share",
    "serviceName": "HALOWERK Eastern Land",
    "tags": [
      "land",
      "europe",
      "country",
      "ro",
      "tree-cover-share"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Share of ESA WorldCover 2021 pixels classified as tree cover. The coordinate is validated against the Natural Earth boundary for Romania; results outside it are rejected before payment."
}

What the leaf hashes

{"body":"4129bcbbb9e064e2ee6719eff810d33e4cbbf7ae3e0165175fb33510e7a7716f","id":2228389,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793647421697364,"prev":null,"subject":"x402_bazaar:https://ostland.halowerk.com/v1/ro-tree-cover-share","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).
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Day root: 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
Chained: 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
Published: On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af

How to check it · This row as JSON