Evidence row 117322

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://natur.halowerk.com/v1/water-quality"
    ]
  ],
  "name": "natur.halowerk.com/v1/water-quality",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "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",
        "scheme": "exact"
      }
    ],
    "description": "Retrieves water quality results for a monitoring site from the Water Quality Portal and normalises them into a comparable shape. The real work is units: the same measurement appears there as mg/L, ug/L, ppm and mg/l in mixed case, and combining them unchecked puts factor-of-thousand errors into any statistic built on top.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "max_results": 800,
              "site_id": "USGS-01646500"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "characteristic": {
                      "description": "Restrict to one characteristic name, e.g. Nitrate.",
                      "maxLength": 80,
                      "type": "string"
                    },
                    "max_results": {
                      "default": 800,
                      "maximum": 3000,
                      "minimum": 10,
                      "type": "integer"
                    },
                    "site_id": {
                      "description": "Monitoring location id, e.g. USGS-01646500.",
                      "maxLength": 60,
                      "minLength": 4,
                      "type": "string"
                    },
                    "start_date": {
                      "description": "ISO date; defaults to two years back.",
                      "maxLength": 10,
                      "type": "string"
                    }
                  },
                  "required": [
                    "site_id"
                  ],
                  "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"
        }
      }
    },
    "lastUpdated": "2026-10-08T05:40:43.366Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:40:43.147Z"
    },
    "resource": "https://natur.halowerk.com/v1/water-quality",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Retrieves water quality results for a monitoring site from the Water Quality Portal and normalises them into a comparable shape. The real work is units: the same measurement appears there as mg/L, ug/L, ppm and mg/l in mixed case, and combining them unchecked puts factor-of-thousand errors into any statistic built on top."
}

What the leaf hashes

{"body":"153ea1da45d6f9445e73a8f500eb9f1abd0d8f51b7c57ef80c2eb8697eef5805","id":117322,"kind":"listing","method":"baseline/1","observed_us":1793025611008192,"prev":null,"subject":"x402_bazaar:https://natur.halowerk.com/v1/water-quality","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xe220a509eb2783d3454aaa2d4c957b2bbfe0f91dd309ce6455a6e94a40dc8bc3
2. 0x7d1af3e25101559631e189fe0ecde1a0718e3e07948f8a9ff0ce15a9d9b8fcfb
3. 0x1b62be52089fa382c7848cc5e8bc10fee745d70bd91e41efb0046ccc15a11d41
4. 0xd0693cd1039ec79fd37fdb58ced63d50e07828e357b21660e6b057c34758e594
5. 0x3ba9cf97f53daf8a9f9efea493fa04d028eb00a931ffb86b53d37ef7617aec34
6. 0x522bd912ce833abd95d79896686e7b588e3c6f52ee4712c8a4be5537b39cb738
7. 0xbac12c6dda92911e8f37f2f3b7d08f89326c47f9b20d312b5466c8727f1680e6
8. 0xa4150761862817c0e030f9876be85b7b1a095c75eae74e948e4d567ab1bfa5f1
9. 0x1ebb75e1e74e6aa229895adbd115e41bc509e6894f964f86fff0a88dd05ba618
10. 0x49d720e73d446e1def3567153233c121c2d3097da1088aec52da97cc45a1a260
11. 0xce35ce45ef8f8ea3dfabeeed3d2069f34fb82c77d0d8f31e3429b7d6deb0a351
12. 0x714c96bd488ccf4af927c8bc83397404f7f6f1b165b622d0e8216290209825e4
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae