Evidence row 117717

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://opendata402.com/v1/rivers/us
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 2cef54a143abed0a2699331bbd19481c566448ec3fd51d3306fd86b2da2fb715
Leaf: 0x3df383d5e427a6e70c6810e79a2663f8af515d08f0db30290dea151e0761dde6

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://opendata402.com/v1/rivers/us"
    ]
  ],
  "name": "opendata402",
  "owner_address": "0x295aa6c5a3460a0f8755823c8ee7bbc7caf79fb1",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:8453",
        "payTo": "0x295AA6c5a3460A0f8755823C8eE7bBC7CAf79fb1",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:137",
        "payTo": "0x295AA6c5a3460A0f8755823C8eE7bBC7CAf79fb1",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:42161",
        "payTo": "0x295AA6c5a3460A0f8755823C8eE7bBC7CAf79fb1",
        "scheme": "exact"
      }
    ],
    "description": "Latest US river and stream readings from the USGS water data API (15-minute data): discharge (cubic feet per second), gage height (feet) or water temperature for a USGS monitoring site. Use it for flood watching, paddling and fishing conditions, and water-dependent operations. Site number e.g. 01646500 (Potomac River near Washington DC). Data are provisional.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "parameter": "discharge",
              "site": "01646500"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "parameter": "discharge",
              "site": "01646500",
              "status": "Provisional",
              "time": "2026-10-14T05:50:00Z",
              "unit": "ft^3/s",
              "value": 17400
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "parameter": {
                      "description": "discharge (default), gage_height or water_temp.",
                      "enum": [
                        "discharge",
                        "gage_height",
                        "water_temp"
                      ],
                      "type": "string"
                    },
                    "site": {
                      "description": "USGS site number.",
                      "pattern": "^\\d{8,15}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "site"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-14T22:44:00.036Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-14T22:43:59.71Z"
    },
    "resource": "https://opendata402.com/v1/rivers/us",
    "serviceName": "opendata402",
    "tags": [
      "rivers",
      "streamflow",
      "usgs",
      "water",
      "floods"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Latest US river and stream readings from the USGS water data API (15-minute data): discharge (cubic feet per second), gage height (feet) or water temperature for a USGS monitoring site. Use it for flood watching, paddling and fishing conditions, and water-dependent operations. Site number e.g. 01646500 (Potomac River near Washington DC). Data are provisional."
}

What the leaf hashes

{"body":"2cef54a143abed0a2699331bbd19481c566448ec3fd51d3306fd86b2da2fb715","id":117717,"kind":"listing","method":"baseline/1","observed_us":1793025611815336,"prev":null,"subject":"x402_bazaar:https://opendata402.com/v1/rivers/us","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON