← The evidence ledger
Evidence row 2201801
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://geo-calc.x402tookit.com/geodesic-inverse
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- d5d74695cd00fdcfa852c07dafd791cb27771c7b82c919935fcc3162192388e4
- Leaf
- 0xa34d99e1ea5c2209f855eb256ce3430c857ca5ad13164858bf59a16015c2c179
What was observed
{
"endpoints": [
[
"x402",
"https://geo-calc.x402tookit.com/geodesic-inverse"
]
],
"name": "Geo Calc",
"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": "Ellipsoidal (WGS84, Vincenty) distance and bearings between two points, compared with haversine on a sphere.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"lat1": 40.6413,
"lat2": 33.9416,
"lon1": -73.7781,
"lon2": -118.4085
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T08:41:06.238Z",
"converged": true,
"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.",
"ellipsoid": "WGS84",
"ellipsoidalDistanceM": 3983079.7485,
"finalBearingDeg": 245.908169,
"haversineDistanceM": 3974341.69,
"haversineInitialBearingDeg": 273.841961,
"haversineMinusEllipsoidalM": -8738.059,
"initialBearingDeg": 273.887299,
"initialCompass": "W",
"iterations": 5,
"kilometers": 3983.079748,
"miles": 2474.971012,
"nauticalMiles": 2150.691009,
"notChecked": [
"terrain, roads, flight paths or sea lanes (this is the shortest line on the ellipsoid surface)",
"elevation above the ellipsoid",
"…1 more"
],
"reasons": [
"Haversine on a sphere differs by -8738.1 m (-0.219 percent).",
"Vincenty converged in 5 iteration(s)."
],
"source": "Vincenty (1975) inverse formula on WGS84, computed locally",
"summary": "3983.08 km (2474.971 mi, 2150.691 nmi) on the WGS84 ellipsoid, initial bearing 273.887 degrees W.",
"verdict": "COMPUTED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"lat1": {
"description": "Start latitude",
"type": "number"
},
"lat2": {
"description": "End latitude",
"type": "number"
},
"lon1": {
"description": "Start longitude",
"type": "number"
},
"lon2": {
"description": "End longitude",
"type": "number"
}
},
"required": [
"lat1",
"lon1",
"lat2",
"lon2"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"converged": {
"type": [
"boolean",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"ellipsoid": {
"type": [
"null",
"string"
]
},
"ellipsoidalDistanceM": {
"type": [
"null",
"number"
]
},
"finalBearingDeg": {
"type": [
"null",
"number"
]
},
"haversineDistanceM": {
"type": [
"null",
"number"
]
},
"haversineInitialBearingDeg": {
"type": [
"null",
"number"
]
},
"haversineMinusEllipsoidalM": {
"type": [
"null",
"number"
]
},
"initialBearingDeg": {
"type": [
"null",
"number"
]
},
"initialCompass": {
"type": [
"null",
"string"
]
},
"iterations": {
"type": [
"null",
"number"
]
},
"kilometers": {
"type": [
"null",
"number"
]
},
"miles": {
"type": [
"null",
"number"
]
},
"nauticalMiles": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
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"string"
]
},
"verdict": {
"type": [
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"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:25:14.814Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:25:14.633Z"
},
"resource": "https://geo-calc.x402tookit.com/geodesic-inverse",
"serviceName": "Geo Calc",
"tags": [
"geodesy",
"distance",
"bearing",
"vincenty"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Ellipsoidal (WGS84, Vincenty) distance and bearings between two points, compared with haversine on a sphere."
}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