Evidence row 117693

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

Kind: listing
About: source_record x402_bazaar:https://opendata402.com/v1/buoys
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 210fa7a117d5b84e21b533bbf29c929454bbfbc247e580a7cabe6de863f0ca9d
Leaf: 0xa75adaa46aeeb2d269445a4ecfa412a8ee67b37cb36c74218f8146fd51f69ddb

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://opendata402.com/v1/buoys"
    ]
  ],
  "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 observation from a NOAA National Data Buoy Center station (US and international buoys and coastal stations): wind direction and speed, gusts, wave height and period, air and water temperature and pressure. Use it for sailing, surfing, offshore work and marine forecasts. Station id e.g. 46026 (San Francisco), 41001 (Cape Hatteras).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "station": "46026"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "dominant_period_s": 15,
              "gust_ms": 8,
              "pressure_hpa": 1019.1,
              "station": "46026",
              "time": "2026-10-14T06:20Z",
              "water_temp_c": 15.4,
              "wave_height_m": 1.6,
              "wind_dir_deg": 310,
              "wind_ms": 6
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "station": {
                      "description": "NDBC station id (5 characters).",
                      "pattern": "^[A-Za-z0-9]{5}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "station"
                  ],
                  "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": "2026-10-14T22:49:18.834Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-14T22:49:18.664Z"
    },
    "resource": "https://opendata402.com/v1/buoys",
    "serviceName": "opendata402",
    "tags": [
      "buoys",
      "waves",
      "marine",
      "noaa",
      "wind"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Latest observation from a NOAA National Data Buoy Center station (US and international buoys and coastal stations): wind direction and speed, gusts, wave height and period, air and water temperature and pressure. Use it for sailing, surfing, offshore work and marine forecasts. Station id e.g. 46026 (San Francisco), 41001 (Cape Hatteras)."
}

What the leaf hashes

{"body":"210fa7a117d5b84e21b533bbf29c929454bbfbc247e580a7cabe6de863f0ca9d","id":117693,"kind":"listing","method":"baseline/1","observed_us":1793025611789253,"prev":null,"subject":"x402_bazaar:https://opendata402.com/v1/buoys","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