Evidence row 117321

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://natur.halowerk.com/v1/river-gauge"
    ]
  ],
  "name": "natur.halowerk.com/v1/river-gauge",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "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": "Returns the latest instantaneous values at a USGS streamgage, together with what makes them readable. A stage of three point four feet means nothing on its own, so each value is placed against the station own record for the requested reference period: the minimum, median and maximum, and the percentile the current reading falls at. The reference period is stated with the comparison, because a percentile without a window is not a statistic.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "reference_days": 30,
              "site_id": "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": {
                    "reference_days": {
                      "default": 30,
                      "description": "Window used to place the current reading in context.",
                      "maximum": 365,
                      "minimum": 2,
                      "type": "integer"
                    },
                    "site_id": {
                      "description": "USGS site number, e.g. 01646500.",
                      "maxLength": 20,
                      "minLength": 6,
                      "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": "2026-10-08T06:13:54.579Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-08T06:13:54.353Z"
    },
    "resource": "https://natur.halowerk.com/v1/river-gauge",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Returns the latest instantaneous values at a USGS streamgage, together with what makes them readable. A stage of three point four feet means nothing on its own, so each value is placed against the station own record for the requested reference period: the minimum, median and maximum, and the percentile the current reading falls at. The reference period is stated with the comparison, because a percentile without a window is not a statistic."
}

What the leaf hashes

{"body":"be73b1680143ddd5378ca843cf5452447dc6578e1e110c47ef54cc923b97d574","id":117321,"kind":"listing","method":"baseline/1","observed_us":1793025611006833,"prev":null,"subject":"x402_bazaar:https://natur.halowerk.com/v1/river-gauge","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. 0x41c5a9eeacb627498a9b504dba36b8ebfae43e9696f595c0786c7c60e04d48bd
2. 0x7e0777b62299a647ddc11d1f3abb17f7cd358d3a414a05bbd05aeebc1e0c0fd0
3. 0x5691f13776951d525aea56bd31350d9292212a5f32e31b463ebcaa0d58e5f44a
4. 0x41d5b419ed2b130602cabaa4a019b80b121ece93550bf7e79f51de5fe5c755d9
5. 0xca099e38533377863197c676742c1cc972514c42018ad0f87fca996c2964a1d6
6. 0xa449beba5c87b32615a0520f319c920db2cbeb2aede35c48de6171f33c22916e
7. 0x2961b01776651f1a1fcdc62c24b8fbffaa23df2bd372178c1eaef7e89e88ca31
8. 0xacb05a4092a8e2083f543212e50554654fc9cbc56c907a8492b29963b7a09252
9. 0x306e32afca67b013b8dae25c650a371ebf6043d778dd6a120d775bcc0835d900
10. 0xfeffd663d71e06910d19eae83256a9e7825e132ad736c20f6e71e3ac2dec7d86
11. 0x40430b285418db6d3a5a2c626d90ef47fc069d45eb9e4fbee49da2a4e637758f
12. 0x58f4330f9ac32da273a2a76d85bc0768d037638cddbd3d1f09d9b64094bfd942
13. 0xd406739acce2ba016f8d49081b15f266a4ea4a0b0fc5ef171c89c8fd2dda4d80
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae