← The evidence ledger
Evidence row 125595
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://x402.agentindex.world/geo/distance
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 95eaafbe1d170d78bad26700d27968a45e182a1b4dd63ae69ec4065b32546d2e
- Leaf
- 0xecd1727b21ec406edea6de5a97fea9117a1d61fbb9e50b62a6c46e186eb71ac8
What was observed
{
"endpoints": [
[
"x402",
"https://x402.agentindex.world/geo/distance"
]
],
"name": "geo-distance",
"owner_address": "0xb3f32bdfe8d07825bc0d7387295ab1d7559ba69d",
"raw": {
"accepts": [
{
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
"scheme": "exact"
}
],
"description": "Great-circle distance between two lat/lon points (haversine formula). Returns km, mi or nm.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"lat1": 48.8566,
"lat2": 51.5074,
"lon1": 2.3522,
"lon2": -0.1278,
"unit": "km"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"distance": 343.5577,
"unit": "km"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"lat1": {
"maximum": 90,
"minimum": -90,
"title": "Lat1",
"type": "number"
},
"lat2": {
"maximum": 90,
"minimum": -90,
"title": "Lat2",
"type": "number"
},
"lon1": {
"maximum": 180,
"minimum": -180,
"title": "Lon1",
"type": "number"
},
"lon2": {
"maximum": 180,
"minimum": -180,
"title": "Lon2",
"type": "number"
},
"unit": {
"default": "km",
"pattern": "^(km|mi|nm)$",
"title": "Unit",
"type": "string"
}
},
"required": [
"lat1",
"lon1",
"lat2",
"lon2"
],
"title": "DistanceInput",
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"distance": {
"title": "Distance",
"type": "number"
},
"unit": {
"title": "Unit",
"type": "string"
}
},
"required": [
"distance",
"unit"
],
"title": "DistanceOutput",
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-25T23:34:44.147Z",
"quality": {
"l30DaysTotalCalls": 16,
"l30DaysUniquePayers": 8,
"lastCalledAt": "2026-10-25T23:34:43.736Z"
},
"resource": "https://x402.agentindex.world/geo/distance",
"serviceName": "geo-distance",
"tags": [
"geospatial",
"distance",
"haversine",
"great circle",
"latitude longitude"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Great-circle distance between two lat/lon points (haversine formula). Returns km, mi or nm."
}What the leaf hashes
{"body":"95eaafbe1d170d78bad26700d27968a45e182a1b4dd63ae69ec4065b32546d2e","id":125595,"kind":"listing","method":"baseline/1","observed_us":1793025626508790,"prev":null,"subject":"x402_bazaar:https://x402.agentindex.world/geo/distance","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
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- 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
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- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae