← The evidence ledger
Evidence row 2202211
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://world-cities.x402tookit.com/largest-cities
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a5f55ea1706c595348bdb771541fc671ba3e10c9ecb857d0d5aa168672102ff1
- Leaf
- 0x75919428b6455b29f34958f8d26763c57e78ddd4c38e7b6ef3f4214c4515fbda
What was observed
{
"endpoints": [
[
"x402",
"https://world-cities.x402tookit.com/largest-cities"
]
],
"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": "Largest cities by population, worldwide or within one country or first-level division such as a US state.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"country": "BR",
"limit": 5
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T06:28:05.903Z",
"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": "27",
"admin1Name": "Sao Paulo",
"asciiName": "Sao Paulo",
"country": "BR",
"countryName": "Brazil",
"elevationM": 769,
"geonameId": 3448439,
"lat": -23.5475,
"lon": -46.63611,
"name": "São Paulo",
"population": 12400232,
"rank": 1,
"role": "first-level administrative seat",
"timezone": "America/Sao_Paulo"
},
{
"admin1Code": "21",
"admin1Name": "Rio de Janeiro",
"asciiName": "Rio de Janeiro",
"country": "BR",
"countryName": "Brazil",
"elevationM": 12,
"geonameId": 3451190,
"lat": -22.90642,
"lon": -43.18223,
"name": "Rio de Janeiro",
"population": 6747815,
"rank": 2,
"role": "first-level administrative seat",
"timezone": "America/Sao_Paulo"
}
],
"citiesInScope": 2277,
"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": [
"urban agglomeration or metro-area populations (figures are for the named city proper as GeoNames records it)",
"whether populations are current (sources and years vary)",
"…1 more"
],
"offset": 0,
"reasons": [
"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.",
"Populations are GeoNames' figure for the city proper and can mix years and definitions; do not compare across countries as if they were one census."
],
"returned": 5,
"scope": "Brazil",
"source": "GeoNames cities15000 (CC BY 4.0)",
"summary": "Largest in Brazil: São Paulo, 12,400,232; 2277 cities ranked.",
"truncated": true,
"verdict": "RANKED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"admin1": {
"description": "First-level division code or name within the country, e.g. NY with US",
"type": "string"
},
"country": {
"description": "ISO 3166 code or country name (default: world)",
"type": "string"
},
"limit": {
"description": "Results 1 to 100 (default 10)",
"type": "integer"
},
"offset": {
"description": "Rows to skip (default 0)",
"type": "integer"
}
},
"required": [],
"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"
]
},
"country": {
"type": [
"null",
"string"
]
},
"countryName": {
"type": [
"null",
"string"
]
},
"elevationM": {
"type": [
"null",
"number"
]
},
"geonameId": {
"type": [
"null",
"number"
]
},
"lat": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"population": {
"type": [
"null",
"number"
]
},
"rank": {
"type": [
"null",
"number"
]
},
"role": {
"type": [
"null",
"string"
]
},
"timezone": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"citiesInScope": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"offset": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"returned": {
"type": [
"null",
"number"
]
},
"scope": {
"type": [
"null",
"string"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"truncated": {
"type": [
"boolean",
"null"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:38:24.712Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:38:24.551Z"
},
"resource": "https://world-cities.x402tookit.com/largest-cities",
"serviceName": "World Cities",
"tags": [
"cities",
"population",
"ranking",
"geonames"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Largest cities by population, worldwide or within one country or first-level division such as a US state."
}What the leaf hashes
{"body":"a5f55ea1706c595348bdb771541fc671ba3e10c9ecb857d0d5aa168672102ff1","id":2202211,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646813774604,"prev":null,"subject":"x402_bazaar:https://world-cities.x402tookit.com/largest-cities","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).
- 0x7591b49f2501d0af5760283fa58be5ef1dbc830e914db58a869929eddafac36c
- 0x15b536451d0fcb54f6f43cb0c1f62e055397534ea4ba95ba032c0fe8fa3f2c4c
- 0x99201de5bd025e37a7cc63b95425ec8cc30fa7fdfec19040337e865cc137e939
- 0xc87480bf3ead6a4fd3b13ebe46afa8ddc75530475eb9f38624b12c574a213396
- 0xafbb81ba70ca10a81cfe72596e7b7a136eb6d4ccc6e5fc71e491204d11f45ce2
- 0xf8bb4b4f405b2b9ccce2ef9758ff1c5106965fe684ba109e543d5a6bd728d5fb
- 0x4cafd77d63d4ca718cbcf9a6b34ec7b55d22e1628d328f40ade2563d75963146
- 0x32f9ec96fd53b6e083ce5e4190c1cb1fe6ce385d1a38de83857c6922b924803b
- 0xe69d6a0b4b3ddf184686a3481188644209de61ade25933e9fa596184241feca1
- 0x9dc221200c0ccb71702ec90f791764414b685dc550b727357bc486837cf8ff49
- 0x17f336620d19213ef9d6526cc969926d0d33f6b8c40b59024555f2fff36facbb
- 0x5feec977b64b001b93395460c9aa81fb2cde50b38c4635f5557793eb53a80b31
- 0xc661008e4484d030079bed4f257f712dbf632593873d45182aa879bd19ae8590
- 0x05ad6b5d39c05b20c421cfd08a369494609a679562a35de106ddfc5164e8f853
- 0x60dd7fd8117cbf3b80707f722623736c8c2b5b56277e8e78c9f81ef2dab8deab
- 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
- 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
- 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af