← The evidence ledger
Evidence row 2201624
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://map-tiles.x402tookit.com/tile-bounds
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 625b967e0a98b5912d3ce5255c8f3bb2006178b9bdc42a459629f058b9f89429
- Leaf
- 0x3d5581a21b4e0b9a8a27b0c838960fb42c90b0c29be56fcb4cb80c5f852072d0
What was observed
{
"endpoints": [
[
"x402",
"https://map-tiles.x402tookit.com/tile-bounds"
]
],
"name": "Map Tile Maths",
"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": "Latitude/longitude and EPSG:3857 metre bounds of a slippy-map tile x/y/z, with its centre and ground size.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"x": 511,
"y": 340,
"zoom": 10
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-12T00:57:25.272Z",
"centerLatitude": 51.508611,
"centerLongitude": -0.175781,
"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.",
"east": 0,
"epsg3857": {
"maxX": 0,
"maxY": 6731350.459,
"minX": -39135.758,
"minY": 6692214.7
},
"north": 51.6180165,
"notChecked": [
"the real extent of imagery available for the tile",
"TMS-numbered inputs (this expects XYZ with y=0 at the north)"
],
"reasons": [],
"source": "computed locally (slippy-map tile scheme)",
"south": 51.3992057,
"summary": "Tile 10/511/340 covers 51.39921 to 51.61802 N and -0.35156 to 0 E.",
"verdict": "COMPUTED",
"west": -0.3515625,
"widthMeters3857": 39135.758,
"worldWidthMeters3857": 40075016.686,
"x": 511,
"y": 340,
"zoom": 10
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"x": {
"description": "Tile column, 0 to 2^zoom - 1",
"type": "integer"
},
"y": {
"description": "Tile row (XYZ, north at 0), 0 to 2^zoom - 1",
"type": "integer"
},
"zoom": {
"description": "Zoom level 0 to 24",
"type": "integer"
}
},
"required": [
"zoom",
"x",
"y"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"centerLatitude": {
"type": [
"null",
"number"
]
},
"centerLongitude": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"east": {
"type": [
"null",
"number"
]
},
"epsg3857": {
"properties": {
"maxX": {
"type": [
"null",
"number"
]
},
"maxY": {
"type": [
"null",
"number"
]
},
"minX": {
"type": [
"null",
"number"
]
},
"minY": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"north": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"south": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"west": {
"type": [
"null",
"number"
]
},
"widthMeters3857": {
"type": [
"null",
"number"
]
},
"worldWidthMeters3857": {
"type": [
"null",
"number"
]
},
"x": {
"type": [
"null",
"number"
]
},
"y": {
"type": [
"null",
"number"
]
},
"zoom": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:35:48.39Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:35:48.087Z"
},
"resource": "https://map-tiles.x402tookit.com/tile-bounds",
"serviceName": "Map Tile Maths",
"tags": [
"tiles",
"bounds",
"bbox",
"mercator"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Latitude/longitude and EPSG:3857 metre bounds of a slippy-map tile x/y/z, with its centre and ground size."
}What the leaf hashes
{"body":"625b967e0a98b5912d3ce5255c8f3bb2006178b9bdc42a459629f058b9f89429","id":2201624,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646806934862,"prev":null,"subject":"x402_bazaar:https://map-tiles.x402tookit.com/tile-bounds","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).
- 0x3d5569fa494b138d0540221db1f4548f93db8e3d520c1c51b97a98a4f185609b
- 0xed41aef42a36734c7e396ae278eabf9e73353d39f5c2151c9ac1c24aa34b1501
- 0xb1b4cb4275d24f84b1ad04ef0573ec867e20a9def91f59bef9fe0abb7464bdc4
- 0x6cf51ddeb7633fc80e8b368bae167ab4506eb538803c8d27a1d39ab02b5e51df
- 0x16593085165f771e14a8adcab5638875c4b21625fe2d374e80eb24a60e0f01e5
- 0xb6a8221ee981158e81b68539b37338246cf87c89ad20d7f7abe81340e7fdab68
- 0xd20257d3637d7d47bfa0a78f5698fbacf6fd9786124a5c1e1c17aaf088eaa427
- 0xaf78f7d4d9084a2020804184c3325159d814f4a5272a99b5c24036eb318f7008
- 0x6eb1c76571846bb5dc63f1868b93ff675b9654280152dc159f9718ee3fcaa236
- 0x67c3901a320204462f297576a623147387a8402b47fc0a0fc66f021286813223
- 0x2be848cb86d72c2e582fe1d0a7c67c075a60e3819be24b46432581c3db979e93
- 0xb1c944b99390ba5175965090f5362380c7485dc911c281e22b9c18263ec8c4ed
- 0x361907c755dedca0a2adf05840c4c503b2c9a3af060e2659c8c63c2a1e438de2
- 0x2205fefa1140121f3fe567e386a9612e8f7236f2a6b4c18d07e5fc4d08bd90e5
- 0x8448bd1fe3c2d48b62a118ace4a5cb82fee53586dd43d776c2526ad844398919
- 0x8760c227928c5295506cd8606e763f86cf8cd2a549820fab4dc86d29ca0d816d
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af