Evidence row 120393

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/marine/buoy/:station"
    ]
  ],
  "name": "Saylor Innovations Data Desk",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:datadesk:ndbc-buoy",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:datadesk:ndbc-buoy",
          "reference": "S7WZaY3xpE8vBEJLGBfJyATd5cVLqQpLB6u9voigVij",
          "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpuZGJjLWJ1b3kiLCJyZWZlcmVuY2UiOiJTN1daYVkzeHBFOHZCRUpMR0JmSnlBVGQ1Y1ZMcVFwTEI2dTl2b2lnVmlqIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIyMjExOTE5Mjh9._8Ou8p6Od-k6KPrnTeB9OUvy2loGZbjZcVFa2-yriGo"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "NOAA NDBC buoy observations - wind, gust, wave height and period, pressure and 3-hour trend, air and water temperature and 24-hour extremes",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "station": "46042"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "air_temp_c": 17.2,
              "dewpoint_c": 14.9,
              "dominant_wave_period_s": 14,
              "last_24h": {
                "max_gust_ms": 10,
                "max_wave_height_m": 1.8,
                "observations": 143
              },
              "observed_at": "2026-10-16T07:50:00.000Z",
              "pressure_change_3h_hpa": -0.6,
              "pressure_hpa": 1017.5,
              "source": "NOAA National Data Buoy Center",
              "station": "46042",
              "url": "https://www.ndbc.noaa.gov/station_page.php?station=46042",
              "water_temp_c": 16.9,
              "wave_height_m": 1.5,
              "wave_height_observed_at": "2026-10-16T07:50:00.000Z",
              "wind_direction_deg": 310,
              "wind_gust_ms": 6,
              "wind_speed_knots": 7.8,
              "wind_speed_ms": 4
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/marine/buoy/:station",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "station": {
                      "description": "NDBC station id in the path, e.g. 46042, 41002, 44013",
                      "type": "string"
                    }
                  },
                  "required": [
                    "station"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "pathParams"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "air_temp_c": {
                      "description": "Air temp, in degrees Celsius",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "dewpoint_c": {
                      "description": "Dewpoint, in degrees Celsius",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "dominant_wave_period_s": {
                      "description": "Dominant wave period s",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "last_24h": {
                      "description": "Last 24h",
                      "type": "object"
                    },
                    "observed_at": {
                      "description": "Time of the observation (UTC)",
                      "type": "string"
                    },
                    "pressure_change_3h_hpa": {
                      "description": "Pressure change 3h, in hectopascals",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "pressure_hpa": {
                      "description": "Pressure, in hectopascals",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "source": {
                      "description": "Data source the values come from",
                      "type": "string"
                    },
                    "station": {
                      "description": "Observation station",
                      "type": "string"
                    },
                    "url": {
                      "description": "Canonical URL",
                      "type": "string"
                    },
                    "water_temp_c": {
                      "description": "Water temp, in degrees Celsius",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "wave_height_m": {
                      "description": "Wave height, in metres",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "wave_height_observed_at": {
                      "description": "Wave height observed at (UTC unless a time zone is given)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "wind_direction_deg": {
                      "description": "Wind direction, in degrees",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "wind_gust_ms": {
                      "description": "Wind gust, in milliseconds",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "wind_speed_knots": {
                      "description": "Wind speed knots",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "wind_speed_ms": {
                      "description": "Wind speed, in milliseconds",
                      "type": [
                        "number",
                        "null"
                      ]
                    }
                  },
                  "required": [
                    "station",
                    "observed_at"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-17T07:11:12.019Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-17T07:11:11.566Z"
    },
    "resource": "https://saylorinnovations.com/api/marine/buoy/:station",
    "serviceName": "Saylor Innovations Data Desk",
    "tags": [
      "buoy wave height now",
      "ndbc buoy 46042 conditions",
      "ocean water temperature at buoy",
      "marine conditions offshore",
      "swell period and wave height"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "NOAA NDBC buoy observations - wind, gust, wave height and period, pressure and 3-hour trend, air and water temperature and 24-hour extremes"
}

What the leaf hashes

{"body":"051cd74d5e18ca8c46f58ba3c8261d927862fa3e8edec1eae61cce0c1c79aa62","id":120393,"kind":"listing","method":"baseline/1","observed_us":1793025617991827,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/marine/buoy/:station","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. 0x9b879c22b5477832ca997e8148f985cf1b428171dce933cf8275978703e2e715
2. 0x5c58de33ddf914c779a6bb6e98c119b0dd7a825f88d1a35c1435258a26dec8d9
3. 0x406138d1b078bed36931535ef26a142e5227c083e4043085cd3bdb111589e129
4. 0x27cec8c8fb8c403e91d0c9d6baa26beabc151241a672d57bc01f3b638714ec52
5. 0xdaa7cedf1af50ca7bbae5023272ed0d422aa06837cf09c347afe96a48b634688
6. 0x5c499c46f32e616aab6ef1276f00ff212704fb1c929801014e4ff1b562ff64b1
7. 0x0b37720e2347a3467e5cd26563a3da1c774e35f848f3ef971712448f59e53dc3
8. 0x3310929ae0e7469d5741fa39da6db0983d0021ebccd0f7303280f77a4173fe9a
9. 0xb03a49015e02ec6c907f2ac497d7fd9d859357c975bc781e04d7c7cdc5cc69bb
10. 0x7fc9c551c0bf3724729ea13bb68249f1874a045c6cfd4d9564abfe126a968bcf
11. 0xb79ffe067e46a7abdcd59167d8556c652ce9f0f297fbf7808095f49485591c09
12. 0xd253212b3d5f7245423cc951067880bc2069b90eeee521363fcee13ebbd606ae
13. 0x99a4e0f8b23989f58b564c1b6e419578b4388f6e0dbf6e50177c1bd476302d0e
14. 0x6713795704ddd9c528d421fadd9cc96b0200a4ddbba84f88e718d4968dde888b
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae