← The evidence ledger
Evidence row 2201623
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://map-tiles.x402tookit.com/tile-count
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 1f3ceee878e1b12e56c357df0e92f713e38d0c8df71a5845c3681545c4ad4410
- Leaf
- 0x76733399697f9cdf13d167a122cc694c938060164d1d1dbed7ce4a52783d96ff
What was observed
{
"endpoints": [
[
"x402",
"https://map-tiles.x402tookit.com/tile-count"
]
],
"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": "Number of slippy-map tiles covering a lat/lon box for a zoom range, with a rough storage estimate at your average tile size.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"east": 0.3,
"maxZoom": 14,
"minZoom": 8,
"north": 51.7,
"south": 51.3,
"west": -0.5
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-12T00:57:25.535Z",
"avgTileKB": 15,
"byZoom": [
{
"tiles": 4,
"tilesHigh": 2,
"tilesWide": 2,
"zoom": 8
},
{
"tiles": 4,
"tilesHigh": 2,
"tilesWide": 2,
"zoom": 9
}
],
"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.",
"estimatedGigabytes": 0.0224,
"estimatedMegabytes": 22.97,
"notChecked": [
"tile server rate limits and bulk-download terms (many forbid it)",
"real tile sizes, which vary widely by area and style",
"…1 more"
],
"reasons": [
"Each extra zoom level roughly quadruples the count."
],
"source": "computed locally (tile index arithmetic)",
"summary": "1568 tile(s) across zoom 8 to 14, about 23 MB at 15 KB each.",
"totalTiles": 1568,
"verdict": "COMPUTED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"avgTileKB": {
"description": "Average tile size in kilobytes for storage (default 15)",
"type": "number"
},
"east": {
"description": "East longitude",
"type": "number"
},
"maxZoom": {
"description": "Last zoom level, up to 22",
"type": "integer"
},
"minZoom": {
"description": "First zoom level (default 0)",
"type": "integer"
},
"north": {
"description": "North latitude",
"type": "number"
},
"south": {
"description": "South latitude",
"type": "number"
},
"west": {
"description": "West longitude",
"type": "number"
}
},
"required": [
"west",
"south",
"east",
"north",
"maxZoom"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"avgTileKB": {
"type": [
"null",
"number"
]
},
"byZoom": {
"items": {
"properties": {
"tiles": {
"type": [
"null",
"number"
]
},
"tilesHigh": {
"type": [
"null",
"number"
]
},
"tilesWide": {
"type": [
"null",
"number"
]
},
"zoom": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"estimatedGigabytes": {
"type": [
"null",
"number"
]
},
"estimatedMegabytes": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalTiles": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:35:50.876Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:35:50.705Z"
},
"resource": "https://map-tiles.x402tookit.com/tile-count",
"serviceName": "Map Tile Maths",
"tags": [
"tiles",
"offline-maps",
"storage",
"bbox"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Number of slippy-map tiles covering a lat/lon box for a zoom range, with a rough storage estimate at your average tile size."
}What the leaf hashes
{"body":"1f3ceee878e1b12e56c357df0e92f713e38d0c8df71a5845c3681545c4ad4410","id":2201623,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646806931422,"prev":null,"subject":"x402_bazaar:https://map-tiles.x402tookit.com/tile-count","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).
- 0x7672c4646e0db3f6204eb0b5c5bf6ad53b9757f937b5795deec97a9e9a8e8399
- 0x49f66413f5feeb99d3e725c781c933b806f0552a112096f99b0bce21f481272f
- 0x1667e28ec6b35d135d9026e7018b0f12e1e71b1368966b558fdbddb31d988ab1
- 0x3e24139df39dee4baacd87712a54c55a20156f8250b96e2b37b443aa41146f40
- 0x38152aba117c8f8f925fe87543ac49467c05551bbea6ced26da816e01c800db1
- 0x7967787c8e36c2f73c783183aaf2370760af4b23c354392dbeffac96ace2afa5
- 0xcc45b70824d97cebe23d03961121d9216dc805ddcfe40b58e09bf3072219d0b9
- 0x1f4b063f4bdc4a79826f5092ef1a19bb3edf82c3d3821ee573be586e0296eccc
- 0xbe8ceba36cc8cfbda8453a5e0c3db64a9246ea06d39a37323aa04ad505217e3b
- 0x217b20d27936cceaa9d86fae6224094f4c80ce8c012824c80281150e1b59451b
- 0x0557890fb1a6a2767cecfe6769a163b6f7f2ceca201130260f7d286d15773827
- 0xe9747ccde895d2aba14067132d86b41625938fce0a85a8efad50b5f89104f4b2
- 0x98c0b976487311f03693fca7825f5f6e75a71ea33ac90caf33040d5eaa6d0b54
- 0xe387a7d610f91d4dc112f2dbdf7ae32c4555f5da4c25c1a9a1310d0b74e80bbf
- 0x60dd7fd8117cbf3b80707f722623736c8c2b5b56277e8e78c9f81ef2dab8deab
- 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
- 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
- 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af