← The evidence ledger
Evidence row 2202233
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://aviation-calc.x402tookit.com/wind-components
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 73cc88c9b2ee2b7aad4f3a726913c5359d0a000302a9afa239659fc126001e82
- Leaf
- 0x45812abcd74dd843ee7fefb515ac3b75022c7578a52bc648a2c60016b47ace2e
What was observed
{
"endpoints": [
[
"x402",
"https://aviation-calc.x402tookit.com/wind-components"
]
],
"name": "Aviation Calculators",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Headwind or tailwind and crosswind (left or right) from wind direction and speed against a runway number or heading, with gusts.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"crosswindLimitKt": 15,
"gustKt": 26,
"runway": "27",
"windFromDeg": 240,
"windKt": 18
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T14:44:09.628Z",
"crosswindFrom": "left",
"crosswindKt": 9,
"crosswindLimitKt": 15,
"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.",
"gustCrosswindKt": 13,
"gustHeadwindKt": 22.52,
"headingDeg": 270,
"headwindKt": 15.59,
"limitMarginKt": 2,
"notChecked": [
"the true versus magnetic reference: wind reports (METAR) are in true degrees except tower reports, runway headings are magnetic, so convert before comparing",
"gust factors, wind shear and turbulence near the ground",
"…2 more"
],
"reasons": [
"Headwind = speed x cos(angle between wind and heading); crosswind = speed x sin(angle).",
"A tailwind component lengthens landing and takeoff distances."
],
"relativeWindAngleDeg": -30,
"source": "computed locally",
"summary": "Wind 240 at 18 kt on heading 270: 15.6 kt headwind and 9 kt crosswind from the left. Gusting 26: 13 kt crosswind. Within your 15 kt limit (margin 2 kt).",
"tailwindKt": 0,
"verdict": "HEADWIND",
"windFromDeg": 240,
"windKt": 18
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"crosswindLimitKt": {
"description": "Your crosswind limit in knots, to compare",
"type": "number"
},
"gustKt": {
"description": "Gust speed in knots, at or above the wind speed",
"type": "number"
},
"headingDeg": {
"description": "Runway or flight heading in degrees, 0 to 360",
"type": "number"
},
"runway": {
"description": "Runway number such as 27 or 09L (heading = number x 10); or give headingDeg",
"type": "string"
},
"windFromDeg": {
"description": "Direction the wind blows FROM, degrees 0 to 360 (same reference as the heading)",
"type": "number"
},
"windKt": {
"description": "Wind speed in knots, 0 to 200",
"type": "number"
}
},
"required": [
"windFromDeg",
"windKt"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"crosswindFrom": {
"type": [
"null",
"string"
]
},
"crosswindKt": {
"type": [
"null",
"number"
]
},
"crosswindLimitKt": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"gustCrosswindKt": {
"type": [
"null",
"number"
]
},
"gustHeadwindKt": {
"type": [
"null",
"number"
]
},
"headingDeg": {
"type": [
"null",
"number"
]
},
"headwindKt": {
"type": [
"null",
"number"
]
},
"limitMarginKt": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"relativeWindAngleDeg": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"tailwindKt": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"windFromDeg": {
"type": [
"null",
"number"
]
},
"windKt": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:37:52.72Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:37:52.548Z"
},
"resource": "https://aviation-calc.x402tookit.com/wind-components",
"serviceName": "Aviation Calculators",
"tags": [
"aviation",
"crosswind",
"headwind",
"runway",
"calculator"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Headwind or tailwind and crosswind (left or right) from wind direction and speed against a runway number or heading, with gusts."
}What the leaf hashes
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Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af