← The evidence ledger
Evidence row 2201615
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://marine-conditions.x402tookit.com/tide-predictions
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f4602abcf5447f37d9a609e794432f2328ed0948ddca78f4b759a91cc8340786
- Leaf
- 0x178b6b461862a5cf50d4d4985ae569f7304083b679da0ec42f2059dbac46bd15
What was observed
{
"endpoints": [
[
"x402",
"https://marine-conditions.x402tookit.com/tide-predictions"
]
],
"name": "Marine Conditions",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Upcoming high and low tides at a NOAA tide station: UTC and local times, heights in feet above MLLW, next tide and tidal range.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"days": 2,
"station": "8518750"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-12T01:09:44.443Z",
"datum": "MLLW",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"name": "The Battery",
"notChecked": [
"weather effects: wind, pressure and storm surge move real water levels away from these astronomical predictions (see /water-level-now)",
"river flow effects",
"…1 more"
],
"reasons": [
"Heights are feet above Mean Lower Low Water. Local times follow the station's daylight-saving clock.",
"Predictions are astronomical only; storms and wind change real water levels."
],
"source": "NOAA CO-OPS",
"sourceUrl": "https://tidesandcurrents.noaa.gov",
"state": "NY",
"station": "8518750",
"summary": "The Battery: next high tide 2026-10-11 21:30 (5.052 ft above MLLW); 10 tides listed, range up to 5.47 ft.",
"tideCount": 10,
"tideRangeFt": 5.47,
"tides": [
{
"heightFt": 5.052,
"localTime": "2026-10-11 21:30",
"type": "high",
"utcTime": "2026-10-12 01:30"
},
{
"heightFt": 0.19,
"localTime": "2026-10-12 03:50",
"type": "low",
"utcTime": "2026-10-12 07:50"
}
],
"unit": "feet",
"verdict": "PREDICTIONS"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"days": {
"description": "Days ahead 1 to 7 (default 2)",
"type": "integer"
},
"station": {
"description": "7-digit CO-OPS station id, e.g. 8518750 (The Battery, NY)",
"type": "string"
}
},
"required": [
"station"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"datum": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"name": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"state": {
"type": [
"null",
"string"
]
},
"station": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"tideCount": {
"type": [
"null",
"number"
]
},
"tideRangeFt": {
"type": [
"null",
"number"
]
},
"tides": {
"items": {
"properties": {
"heightFt": {
"type": [
"null",
"number"
]
},
"localTime": {
"type": [
"null",
"string"
]
},
"type": {
"type": [
"null",
"string"
]
},
"utcTime": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"unit": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:36:15.76Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:36:15.562Z"
},
"resource": "https://marine-conditions.x402tookit.com/tide-predictions",
"serviceName": "Marine Conditions",
"tags": [
"tides",
"noaa",
"marine",
"boating"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Upcoming high and low tides at a NOAA tide station: UTC and local times, heights in feet above MLLW, next tide and tidal range."
}What the leaf hashes
{"body":"f4602abcf5447f37d9a609e794432f2328ed0948ddca78f4b759a91cc8340786","id":2201615,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646806907353,"prev":null,"subject":"x402_bazaar:https://marine-conditions.x402tookit.com/tide-predictions","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
- 0x178b49d7e3651b09135b2ecf8a43161b9ac543d8de7efa5f2560b7b4357ec83b
- 0xd7484d35a0f054ac807cecf7cafc1bc4abf008d0c26bce908dfc36b65bb06582
- 0x75659e6cdb4f245ad474007d453ebc1d07d55232fc6792e7aeb4d5de6a65fd00
- 0x02c6b1febc29f67e25d052eaf4808a31e91be143aae09ae319864ff66839648d
- 0x9e47615165b68021a630df8eb5fa9c066b586735f41ef893ac48b145ff4d266e
- 0xc7c4bee16012c3da277314f8a45ba80eac503fa0f4810c1f594da0404ed9451d
- 0x8fce887d4544a77fd8c17879a4223a2ede9f7d785a58dd088ff07c73be8a61b5
- 0x6a70f6e3278c70045550e741bec9007598077f395195489b6659742c63b85257
- 0x9d2cc733542a217d42127562b2da790155da840dab2884807f7f25e5df05e7f7
- 0xbe6f43271d7faccb56f0b848e5d3a63f63527fc51712daf26988be2cc089cc85
- 0x499b5d7a70a8f1600c1aacb33fefaac82dee322d227f7ffe6f03567c3573b00d
- 0x1dc8ba8f08085ecc6abc940de99fd78b8c8285acc2d6e3ac9b076bf78b1fc1bb
- 0x3c6bb4ee00210310afea4db77a3d5e14b8fbfec0b426541034734f028665bbb4
- 0xad8410fe2298c1ccff00c301cabf57d2495acf6e614e5236bbeb834747908ca4
- 0xb6470417fdb2a0e3de9c1abb1722cbc88bc0dfb5afda0a77e1eac26ab1683ece
- 0xac40f077ca4be8c3432a67771725cc315e8101fc2649999cfad2c900a7640e27
- 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af