Evidence row 451922

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": "2026-10-27T10:11:22.125Z",
    "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":"693c5256eec3f466e46fe8d7b0b9595f073672c70ff7cc9f7bcd98d3d64c4177","id":451922,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100515753095,"prev":117693,"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 2026-10-27 (273461 rows).

1. 0xe3e7e0c067746d656881a16e685b93a5a068dfa7dae4c934ecc595f01265254d
2. 0x7e7415478c4a2b6b1451f4e638f66d83900353ce533d5e61c42ad2f338a302cd
3. 0xf5c3365f725d755b6f6a0d8326abcf8b2c06c3cf0306f8d0f947eee546675582
4. 0x5378af8a70698704b8d9526f4f82fdb0c89af863d4d21243124f79b1f772433d
5. 0x3efa01c4a2109ba78bf9aede0dbc2d3f55c262e162a8278bc6d3bf8a8ef15c06
6. 0x7d726ae74d60d9856d26f65855181f251d2cf3c7851ae120f52ce776405f65d5
7. 0x666674a1bd105b09093b0b5226b4a75fe6efac874c03fd4cf33401f93936eaa3
8. 0x9f844234efb5476aa4168f07a379589e349f5fefd2d075ccc0853f67438b21b3
9. 0xe60ae1ab22fef954c79b6848b76672555c622081714e67f05499715bdf2204d5
10. 0xcc19c30edda43ff1ebcc1026e0d7a666807e4babbafb9a15e178b7bd8bf27788
11. 0xb44c2942ddb3464f2b2c770afdcadc509526756e35fc6b54cbe05f81f7639529
12. 0x46ff3840378aba3ab5311ff9a58e7269ceff45cbef540c18a2bad9af3d6127bb
13. 0xd98ea318b514153f74841c90aff18a807e61314ec99610bf3bdbb7219da01cbd
14. 0xf72dee7a0c7534cb19ede4959b957b00c0a8285c36ad49dd2ce1c1092bf60d93
15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4