Evidence row 526861

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": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-27T10:11:21.941Z"
    },
    "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":"05c3097d3d5127f356a563bdef3c25d7986964b28db3f2dc74d4cc7366e52093","id":526861,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124792266725,"prev":451922,"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. 0x5650c3188896653565e7390dcb7be86f9448a025758ae7702d5fd790ae254a27
2. 0xe1532144dd65cbff72f469ca5e80e813ce2417119ea6daf88a4aa79b6c3b71f6
3. 0xfde0990a321a04a7e20625a52533180dcc470d50c65777469c412d3db45f4d4b
4. 0xbb14a44ae749a5c1108a3a5c6731e55694010d6fdb47c6438e84b9b9590c5d1e
5. 0xdb3d2285782f6871ba13523dd0c9cb6517ae67161096a21b0d5dfda17a3f4831
6. 0x78b819bd9b7d0cf22a020ef3489394b863fb9a0d6cd710401506978b396be7a9
7. 0x3886d67952e2a6cb1abc4eb7e9942af07d2e0faa5e5506f3040c00319190e931
8. 0x000f336dbb214dda8ef7de7a91790aa0ba500b5b215d0290884031271822352e
9. 0x1104eebb0e2dcc5837649631b09e183f403146b9184632412458e39cd9d7a93a
10. 0xc22f3135ca4633c230e513d96cbd62a7ad2b2817efbf661daed398daf3594300
11. 0xb779e51de1c3f1430eb1b8e7080208656e6654f51fea635c54304a95d9d07713
12. 0xbda8a72c454627630518fefedac1e595455f868382eb4add82d53de75ccbae18
13. 0x906b5f0e8ef1fe7894886d84f460bb3239d5f14b14ad4adff27c7dcea6265169
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4