← The evidence ledger
Evidence row 2201792
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://site-climate.x402tookit.com/wind-resource
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a417601dc2ab53f70b6d2b6bd54499990e45e3529eb04a5d5fdd44c892921731
- Leaf
- 0xf368d329ea718864071142f4c0c2c8c10a41af00b83cb52f446a0f96c562d668
What was observed
{
"endpoints": [
[
"x402",
"https://site-climate.x402tookit.com/wind-resource"
]
],
"name": "Site Climate",
"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": {
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"transactionVersions": [
0
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},
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"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "20000",
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"extra": {
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"network": "eip155:137",
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"scheme": "exact"
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{
"amount": "20000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
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},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Average wind speed at 10 m scaled to a turbine hub height, with approximate wind power density and NREL class for a location.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"hubHeightM": 80,
"lat": 40,
"lon": -83
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T14:45:37.915Z",
"attribution": "Data: NASA Langley Research Center POWER Project (power.larc.nasa.gov), funded through the NASA Earth Science Directorate Applied Science Program.",
"calmestMonth": "August",
"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.",
"hubHeightM": 80,
"latitude": 40,
"longitude": -83,
"meanWind10mMs": 4.26,
"meanWindHubMs": 5.735,
"monthlyHubMs": {
"April": 6.79,
"August": 4.08,
"December": 6.45,
"February": 6.89,
"January": 7.04,
"July": 4.16,
"June": 4.85,
"March": 6.73,
"May": 5.52,
"November": 6.17,
"October": 5.68,
"September": 4.55
},
"notChecked": [
"actual terrain, trees and buildings: the power-law shear exponent is a stand-in, and real shear varies with surface roughness and stability",
"local turbulence, gusts and extreme winds that decide turbine siting and safety",
"…2 more"
],
"nrelClass50m": 1,
"powerDensity50mWm2": 180,
"powerDensityHubWm2": 221,
"reasons": [
"Data: NASA Langley Research Center POWER Project (power.larc.nasa.gov), funded through the NASA Earth Science Directorate Applied Science Program.",
"Power law v(h) = v10 x (h/10)^0.143; power density = 0.5 x 1.225 x (6/pi) x v^3, assuming a Rayleigh distribution.",
"…1 more"
],
"shearExponent": 0.143,
"source": "NASA POWER",
"sourceUrl": "https://power.larc.nasa.gov/",
"summary": "Mean wind 4.3 m/s at 10 m scales to 5.7 m/s at 80 m (power density about 221 W/m2); NREL class 1 at 50 m (poor for utility scale).",
"verdict": "WEAK",
"windiestMonth": "January"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
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"properties": {
"method": {
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},
"queryParams": {
"properties": {
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"description": "Hub height in metres, 10 to 200 (default 80)",
"type": "number"
},
"lat": {
"description": "Latitude, -90 to 90",
"type": "number"
},
"lon": {
"description": "Longitude, -180 to 180",
"type": "number"
},
"shearExponent": {
"description": "Power-law exponent, 0.1 to 0.4 (default 0.143, open terrain)",
"type": "number"
}
},
"required": [
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"type": "object"
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"output": {
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},
"calmestMonth": {
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]
},
"degraded": {
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"null"
]
},
"disclaimer": {
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},
"hubHeightM": {
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]
},
"latitude": {
"type": [
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},
"longitude": {
"type": [
"null",
"number"
]
},
"meanWind10mMs": {
"type": [
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]
},
"meanWindHubMs": {
"type": [
"null",
"number"
]
},
"monthlyHubMs": {
"properties": {
"April": {
"type": [
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]
},
"August": {
"type": [
"null",
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]
},
"December": {
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},
"February": {
"type": [
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]
},
"January": {
"type": [
"null",
"number"
]
},
"July": {
"type": [
"null",
"number"
]
},
"June": {
"type": [
"null",
"number"
]
},
"March": {
"type": [
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},
"May": {
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"null",
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},
"November": {
"type": [
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},
"October": {
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},
"September": {
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}
},
"type": [
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]
},
"notChecked": {
"items": {
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},
"type": [
"array",
"null"
]
},
"nrelClass50m": {
"type": [
"null",
"number"
]
},
"powerDensity50mWm2": {
"type": [
"null",
"number"
]
},
"powerDensityHubWm2": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
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},
"type": [
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"null"
]
},
"shearExponent": {
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},
"source": {
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},
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},
"summary": {
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},
"verdict": {
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},
"windiestMonth": {
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}
},
"type": "object"
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},
"lastUpdated": "2026-11-01T23:25:37.215Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T23:25:37.033Z"
},
"resource": "https://site-climate.x402tookit.com/wind-resource",
"serviceName": "Site Climate",
"tags": [
"wind",
"turbine",
"power-density",
"renewable"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Average wind speed at 10 m scaled to a turbine hub height, with approximate wind power density and NREL class for a location."
}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