← The evidence ledger
Evidence row 2202221
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://world-cities.x402tookit.com/cities-near-point
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- af5da0cd3114ca92afeaa25840685ac58e16ce52cc296ab8059542bb15b37098
- Leaf
- 0x66c7bc93ce0d5a997d96fc8c9b6bd7f73901da8376c0a3710d4aa5e5f1360f99
What was observed
{
"endpoints": [
[
"x402",
"https://world-cities.x402tookit.com/cities-near-point"
]
],
"name": "World Cities",
"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": "Nearest world cities to a latitude and longitude within a radius, with distance and compass bearing.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"lat": 48.8566,
"limit": 5,
"lon": 2.3522,
"radiusKm": 30
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T06:28:04.033Z",
"attribution": "City data: GeoNames (geonames.org), licensed CC BY 4.0, cities15000 snapshot 2026-10-21. Crowd-edited; populations and coordinates may be dated.",
"cities": [
{
"admin1Code": "11",
"admin1Name": "Ile-de-France",
"asciiName": "Paris 04 Hotel-de-Ville",
"bearingDeg": 344,
"country": "FR",
"countryName": "France",
"direction": "NNW",
"distanceKm": 0.4,
"distanceMiles": 0.3,
"elevationM": 44,
"geonameId": 3013131,
"lat": 48.8601,
"lon": 2.3507,
"name": "Paris 04 Hôtel-de-Ville",
"population": 27332,
"role": null,
"timezone": "Europe/Paris"
},
{
"admin1Code": "11",
"admin1Name": "Ile-de-France",
"asciiName": "Paris",
"bearingDeg": 215,
"country": "FR",
"countryName": "France",
"direction": "SW",
"distanceKm": 0.4,
"distanceMiles": 0.3,
"elevationM": 42,
"geonameId": 2988507,
"lat": 48.85341,
"lon": 2.3488,
"name": "Paris",
"population": 2138551,
"role": "national capital",
"timezone": "Europe/Paris"
}
],
"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.",
"notChecked": [
"places under about 15,000 people (a remote point may show none even with villages nearby)",
"travel distance or time (straight-line only)",
"…1 more"
],
"query": {
"lat": 48.8566,
"lon": 2.3522,
"minPopulation": 0,
"radiusKm": 30
},
"reasons": [
"Distances are great-circle on a sphere of radius 6371.0088 km; the bearing is from your point to the city.",
"GeoNames also lists some boroughs and district seats (for example Brooklyn, Queens, Paris arrondissements) as separate places, so a city can appear next to its own parts."
],
"source": "GeoNames cities15000 (CC BY 4.0)",
"summary": "Nearest: Paris 04 Hôtel-de-Ville, FR, 0.4 km NNW; 216 within 30 km.",
"totalWithinRadius": 216,
"truncated": true,
"verdict": "FOUND"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"lat": {
"description": "Latitude, -90 to 90",
"type": "number"
},
"limit": {
"description": "Results 1 to 50 (default 10)",
"type": "integer"
},
"lon": {
"description": "Longitude, -180 to 180",
"type": "number"
},
"minPopulation": {
"description": "Only cities with at least this population (default 0)",
"type": "integer"
},
"radiusKm": {
"description": "Search radius 1 to 2000 km (default 100)",
"type": "integer"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"attribution": {
"type": [
"null",
"string"
]
},
"cities": {
"items": {
"properties": {
"admin1Code": {
"type": [
"null",
"string"
]
},
"admin1Name": {
"type": [
"null",
"string"
]
},
"asciiName": {
"type": [
"null",
"string"
]
},
"bearingDeg": {
"type": [
"null",
"number"
]
},
"country": {
"type": [
"null",
"string"
]
},
"countryName": {
"type": [
"null",
"string"
]
},
"direction": {
"type": [
"null",
"string"
]
},
"distanceKm": {
"type": [
"null",
"number"
]
},
"distanceMiles": {
"type": [
"null",
"number"
]
},
"elevationM": {
"type": [
"null",
"number"
]
},
"geonameId": {
"type": [
"null",
"number"
]
},
"lat": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"population": {
"type": [
"null",
"number"
]
},
"role": {
"type": [
"null",
"string"
]
},
"timezone": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"query": {
"properties": {
"lat": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"minPopulation": {
"type": [
"null",
"number"
]
},
"radiusKm": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalWithinRadius": {
"type": [
"null",
"number"
]
},
"truncated": {
"type": [
"boolean",
"null"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:38:16.316Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:38:15.912Z"
},
"resource": "https://world-cities.x402tookit.com/cities-near-point",
"serviceName": "World Cities",
"tags": [
"cities",
"nearest",
"geo",
"radius"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Nearest world cities to a latitude and longitude within a radius, with distance and compass bearing."
}What the leaf hashes
{"body":"af5da0cd3114ca92afeaa25840685ac58e16ce52cc296ab8059542bb15b37098","id":2202221,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646813815760,"prev":null,"subject":"x402_bazaar:https://world-cities.x402tookit.com/cities-near-point","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).
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- 0x8760011fd75bdefffe80fea410f95095e2d77ba3757e56001b31d2cd52cceeec
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- 0xa4857ba9139cdc8bff59acf8eb92070b9887fb01efef894736a70495b8f07550
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- 0x5bd5a96f522730cc2d7c83453f529cad4c5355c32378d76ca968a8d0b9548f59
- 0xafbca494e50a3e802cc29be04745764c359231efd8cff417b639a8de09c4e118
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- 0x23f4763e8db2efe57fbc28dfc68f2b97b65f54a03425994e68157763af649a50
- 0x0e5696ae625571c52ddcd8dc09aa6c994b4ab38f2086df20d56f1f01c603e501
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- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af