← The evidence ledger
Evidence row 2202219
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://world-cities.x402tookit.com/city-compare
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 1bf71e9e8d3ad754a9b0f1830fece507be9c70ee310df16f6c6e3a0122577fe4
- Leaf
- 0x4c1759c069bdb453a927c002d4a2c7841eb934eac1a9f52a66a2926b3c684e33
What was observed
{
"endpoints": [
[
"x402",
"https://world-cities.x402tookit.com/city-compare"
]
],
"name": "World Cities",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Compare two world cities side by side: population ratio, distance, latitude, elevation and time difference now.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"a": "Tokyo",
"b": "Sao Paulo"
},
"type": "http"
},
"output": {
"example": {
"a": {
"admin1Code": "40",
"admin1Name": "Tokyo",
"asciiName": "Tokyo",
"country": "JP",
"countryName": "Japan",
"elevationM": 44,
"geonameId": 1850147,
"hemisphere": "northern, eastern",
"lat": 35.6895,
"lon": 139.69171,
"name": "Tokyo",
"population": 9733276,
"role": "national capital",
"timezone": "Asia/Tokyo",
"utcOffsetNow": "+09:00"
},
"aAheadOfBHours": 12,
"asOf": "2026-10-21T06:28:04.319Z",
"asOfUtc": "2026-10-21T06:28:04Z",
"attribution": "City data: GeoNames (geonames.org), licensed CC BY 4.0, cities15000 snapshot 2026-10-21. Crowd-edited; populations and coordinates may be dated.",
"b": {
"admin1Code": "27",
"admin1Name": "Sao Paulo",
"asciiName": "Sao Paulo",
"country": "BR",
"countryName": "Brazil",
"elevationM": 769,
"geonameId": 3448439,
"hemisphere": "southern, western",
"lat": -23.5475,
"lon": -46.63611,
"name": "São Paulo",
"population": 12400232,
"role": "first-level administrative seat",
"timezone": "America/Sao_Paulo",
"utcOffsetNow": "-03:00"
},
"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.",
"distanceKm": 18533.8,
"distanceMiles": 11516.4,
"elevationDifferenceM": 725,
"latitudeDifferenceDeg": 59.24,
"notChecked": [
"metro-area sizes, economy, climate or cost of living",
"whether the two populations are from the same year",
"…1 more"
],
"populationDifference": -2666956,
"populationRatioAOverB": 0.785,
"reasons": [],
"sameCountry": false,
"sameTimezone": false,
"source": "GeoNames cities15000 (CC BY 4.0) + IANA tz data via Intl",
"summary": "Tokyo (9,733,276) vs São Paulo (12,400,232): São Paulo is 1.27 times larger; 18,534 km apart; 12 hours time difference now.",
"timeDifferenceHoursNow": 12,
"verdict": "COMPARED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"a": {
"description": "First city, e.g. Tokyo or 'Paris, FR'",
"type": "string"
},
"aCountry": {
"description": "Country of the first city to disambiguate",
"type": "string"
},
"b": {
"description": "Second city, e.g. 'London, GB'",
"type": "string"
},
"bCountry": {
"description": "Country of the second city to disambiguate",
"type": "string"
}
},
"required": [
"a",
"b"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"a": {
"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"
]
},
"hemisphere": {
"type": [
"null",
"string"
]
},
"lat": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"population": {
"type": [
"null",
"number"
]
},
"role": {
"type": [
"null",
"string"
]
},
"timezone": {
"type": [
"null",
"string"
]
},
"utcOffsetNow": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"aAheadOfBHours": {
"type": [
"null",
"number"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"asOfUtc": {
"type": [
"null",
"string"
]
},
"attribution": {
"type": [
"null",
"string"
]
},
"b": {
"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"
]
},
"hemisphere": {
"type": [
"null",
"string"
]
},
"lat": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"population": {
"type": [
"null",
"number"
]
},
"role": {
"type": [
"null",
"string"
]
},
"timezone": {
"type": [
"null",
"string"
]
},
"utcOffsetNow": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"distanceKm": {
"type": [
"null",
"number"
]
},
"distanceMiles": {
"type": [
"null",
"number"
]
},
"elevationDifferenceM": {
"type": [
"null",
"number"
]
},
"latitudeDifferenceDeg": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"populationDifference": {
"type": [
"null",
"number"
]
},
"populationRatioAOverB": {
"type": [
"null",
"number"
]
},
"reasons": {
"type": [
"array",
"null"
]
},
"sameCountry": {
"type": [
"boolean",
"null"
]
},
"sameTimezone": {
"type": [
"boolean",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"timeDifferenceHoursNow": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:38:17.816Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:38:17.547Z"
},
"resource": "https://world-cities.x402tookit.com/city-compare",
"serviceName": "World Cities",
"tags": [
"cities",
"compare",
"population",
"timezone"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Compare two world cities side by side: population ratio, distance, latitude, elevation and time difference now."
}What the leaf hashes
{"body":"1bf71e9e8d3ad754a9b0f1830fece507be9c70ee310df16f6c6e3a0122577fe4","id":2202219,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646813807842,"prev":null,"subject":"x402_bazaar:https://world-cities.x402tookit.com/city-compare","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).
- 0x4c1755a55a2b7289192f872507984dc237ca7e0241bb87b7ab53cb85e3ecf2e0
- 0xd7f72e428136eaebf27eec0eda026d06291580687f1100dfcec2d8a0935cc62f
- 0x198cc57712d355b9f42cb01296601181d6a2dc9b76291354bae913501c23668a
- 0x6d9d79e12f0c976b9f074a44d23778f06e6aca1df2250e0b4512e8c4ac5609cd
- 0xce089a59ace0866931cfe3d8c3e2eb5c153136cc0f987a2169f017d45dce10bb
- 0x39c4d6043416e5e4568011e08b86a5d22ac513f9f1b3fc7f356b55bc1a1bc4ae
- 0xc5adc8053ed1108402db2cf94f252222952f613b00f3721462c87a7fb0e41046
- 0x0affd568cde10fd457d358ead7d816d760f4d9fe5b963edd806dedb79dde2344
- 0xa7add4b354c0b62102e67270ac2af6ea18531613afaa8e6aa8068fc220be97de
- 0x30af8bdbbf09738760f11695ad27f57aaa77b45642cee23479313afb6dba113c
- 0x23469d10eca76db14ffb838a85f97f269ab4a0e0f10f7093129e367f23ff74b9
- 0xa75340e0bbabb2f0ca98fb3825535e0c36ea9da96d1d4b1af9ca29649e0fc148
- 0xc2ea6f7cdcf0c6904201c0d186a72f2a6fa2d355f41deec0e55aad057d5b8897
- 0xf01d425f0c05ac504062d9b471f06fbf10480b3526efb1ee77bb71aebd05f0de
- 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
- 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
- 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
- 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af