← The evidence ledger
Evidence row 2202237
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://aviation-calc.x402tookit.com/isa-atmosphere
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 30e3c1f5681af15200e3439391c934f1c810887bf314b88bd2b343ce27f60349
- Leaf
- 0x5b86c69d11be0c5da7312678e830adc7a30eef6dfe8b872553306f55710db322
What was observed
{
"endpoints": [
[
"x402",
"https://aviation-calc.x402tookit.com/isa-atmosphere"
]
],
"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": "Standard atmosphere at an altitude: temperature, pressure, density, sound speed, and ISA deviation for a measured temperature.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"altitudeFt": 10000,
"oatC": 5
},
"type": "http"
},
"output": {
"example": {
"altitudeFt": 10000,
"asOf": "2026-10-11T14:44:08.573Z",
"degraded": false,
"densityRatio": 0.7385,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"isaDensityKgM3": 0.9046,
"isaDeviationC": 9.81,
"isaPressureHpa": 696.82,
"isaPressureInHg": 20.577,
"isaTemperatureC": -4.81,
"isaTemperatureF": 23.34,
"layer": "troposphere (6.5 C per km, 1.98 C per 1000 ft)",
"notChecked": [
"the real atmosphere, which differs from the ISA by tens of degrees and by humidity",
"geopotential versus geometric altitude, which differ by under 0.3% below 65,000 ft",
"…1 more"
],
"oatC": 5,
"reasons": [
"Below 36,089 ft the temperature falls 6.5 C per 1000 m (about 1.98 C per 1000 ft) from 15 C; above it the temperature holds at -56.5 C.",
"ISA deviation = actual temperature - ISA temperature at the same pressure altitude."
],
"ruleOfThumbIsaTempC": -5,
"source": "computed locally",
"speedOfSoundKt": 638.3,
"summary": "At 10000 ft the standard atmosphere is -4.8 C, 696.82 hPa (20.577 inHg), density 0.9046 kg/m3 (73.8% of sea level). 5 C is ISA +9.8.",
"verdict": "WARMER_THAN_ISA"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"altitudeFt": {
"description": "Pressure altitude in feet, -1500 to 65000",
"type": "number"
},
"oatC": {
"description": "Actual outside air temperature in C, to get the ISA deviation",
"type": "number"
}
},
"required": [
"altitudeFt"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"altitudeFt": {
"type": [
"null",
"number"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"densityRatio": {
"type": [
"null",
"number"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"isaDensityKgM3": {
"type": [
"null",
"number"
]
},
"isaDeviationC": {
"type": [
"null",
"number"
]
},
"isaPressureHpa": {
"type": [
"null",
"number"
]
},
"isaPressureInHg": {
"type": [
"null",
"number"
]
},
"isaTemperatureC": {
"type": [
"null",
"number"
]
},
"isaTemperatureF": {
"type": [
"null",
"number"
]
},
"layer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"oatC": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"ruleOfThumbIsaTempC": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"speedOfSoundKt": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:37:40.429Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:37:40.226Z"
},
"resource": "https://aviation-calc.x402tookit.com/isa-atmosphere",
"serviceName": "Aviation Calculators",
"tags": [
"aviation",
"isa",
"atmosphere",
"temperature",
"calculator"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Standard atmosphere at an altitude: temperature, pressure, density, sound speed, and ISA deviation for a measured temperature."
}What the leaf hashes
{"body":"30e3c1f5681af15200e3439391c934f1c810887bf314b88bd2b343ce27f60349","id":2202237,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646814165878,"prev":null,"subject":"x402_bazaar:https://aviation-calc.x402tookit.com/isa-atmosphere","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).
- 0x5b873709e786fc33e195572ff73be73468914199c79db51d1fe7462935f9b865
- 0x4e227b324fd6fdb344602117dd8f0fb2584774b79ac2cb77424b07662838f7cb
- 0x0a252670596469aa1de20b2afe5ef4bf3b8d2204ccd323aa8e7fb0ef903387fb
- 0x0984e918caf96f3e66d789db51947faa4b52eb6d54d3a8fbc8675f85313f32f3
- 0x1915d3170e7eef8b1b8a9405b6c76afc440d4c0093f11d02cc25cdbabcb336d1
- 0x985a8a5f44238cc8d4755bca397efb625b1245999d20d42b752cd239b96fc5bb
- 0x46b42e9b9b50d0b10e0286b867aa8fd1b9302e090cb100e88997bc6ce83fcd5e
- 0xa727e7886396f6868a1b3ed8f0167b52d1a2bf155fa14750f63092c3239864b2
- 0xafdd1e41de617bdaf8902cad0e72a2e217ca4f2a25d93e9ae199d46e6878b527
- 0xfb1210f3f776f6178edf8e3a6d97a6db5242c427801002ecc47ad0808bf339cc
- 0x759c94254fb1855bde03330a938dc518c259b867bbfdf745d9c3bbdf807f61b8
- 0xc50f51339262e39d55afbcdc6f7bed39e2183da928578f2ec140055f38e1a1bf
- 0x04a2764875935b38489e204384b26fce2bde25d67ea9c3bfa8dfb815f7d3928e
- 0x463370b8390b2f93f44023fe6ce3fd4ebff0a7fecb7894dd4f82f8253ec8661f
- 0x52242d46cadab5f421a6f86c1edc6379b085ae98482fa80904e4a3028c1849a3
- 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
- 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
- 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af