← The evidence ledger
Evidence row 3968409
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/geo/bbox
- Recorded
- Previous row
- #119952
- Body SHA-256
- 09f581d6af41da23003c6d6c2120c3e99d10295e6c93d3220a0c21c286d7bd9e
- Leaf
- 0xaf637391b9d981f880ca0f177cc074b77e7260f9bf2af1f08ca60ad3c7b8f557
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/geo/bbox"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:bbox-tiles",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:bbox-tiles",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:137",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:bbox-tiles",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:42161",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"memo": "saylor:datadesk:bbox-tiles"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"memo": "saylor:datadesk:bbox-tiles"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "Bounding box around a coordinate for a radius in km, with an lon,lat bbox string, Web Mercator tile numbers at a zoom level and meters per pixel",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"lat": "48.8566",
"lon": "2.3522",
"radius_km": "5",
"zoom": "14"
},
"type": "http"
},
"output": {
"example": {
"area_km2": 100,
"bbox": {
"max_lat": 48.901566,
"max_lon": 2.420543,
"min_lat": 48.811634,
"min_lon": 2.283857
},
"bbox_string_lonlat": "2.283857,48.811634,2.420543,48.901566",
"center": {
"lat": 48.8566,
"lon": 2.3522
},
"center_tile": {
"x": 8299,
"y": 5636,
"z": 14
},
"crosses_antimeridian": false,
"meters_per_pixel": 6.286,
"note": "The box is a square of side 2 x radius_km centred on the point, using spherical Earth geometry.",
"radius_km": 5,
"source": "Spherical bounding box and Web Mercator (slippy map) tile arithmetic",
"tile_range": {
"count": 56,
"x_max": 8302,
"x_min": 8295,
"y_max": 5639,
"y_min": 5633
},
"zoom": 14
},
"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": "Center latitude",
"type": "string"
},
"lon": {
"description": "Center longitude",
"type": "string"
},
"radius_km": {
"description": "optional half-width in km, default 10",
"type": "string"
},
"zoom": {
"description": "optional tile zoom 0-22, default 12",
"type": "string"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"queryParams"
],
"type": "object"
},
"output": {
"properties": {
"description": {
"type": "string"
},
"example": {
"additionalProperties": true,
"properties": {
"area_km2": {
"description": "Area km2",
"type": "integer"
},
"bbox": {
"additionalProperties": true,
"description": "Bounding box with min and max latitude and longitude",
"properties": {
"max_lat": {
"type": [
"number"
]
},
"max_lon": {
"type": [
"number"
]
},
"min_lat": {
"type": [
"number"
]
},
"min_lon": {
"type": [
"number"
]
}
},
"type": "object"
},
"bbox_string_lonlat": {
"description": "Bbox string lonlat",
"type": "string"
},
"center": {
"additionalProperties": true,
"description": "Centre or facility that produced the record",
"properties": {
"lat": {
"type": [
"number"
]
},
"lon": {
"type": [
"number"
]
}
},
"type": "object"
},
"center_tile": {
"additionalProperties": true,
"description": "Center tile",
"properties": {
"x": {
"description": "Tile column",
"type": [
"number",
"null"
]
},
"y": {
"description": "Tile row",
"type": [
"number",
"null"
]
},
"z": {
"description": "Zoom level",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"checked_at": {
"description": "Time the check was run (UTC)",
"type": "string"
},
"crosses_antimeridian": {
"description": "Crosses antimeridian",
"type": "boolean"
},
"meters_per_pixel": {
"description": "Meters per pixel",
"type": "number"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"radius_km": {
"description": "Radius, in kilometres",
"type": "number"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"tile_range": {
"additionalProperties": true,
"description": "Tile range",
"properties": {
"count": {
"type": [
"integer"
]
},
"x_max": {
"type": [
"integer"
]
},
"x_min": {
"type": [
"integer"
]
},
"y_max": {
"type": [
"integer"
]
},
"y_min": {
"type": [
"integer"
]
}
},
"type": "object"
},
"zoom": {
"description": "Tile zoom level used",
"type": [
"number",
"null"
]
}
},
"required": [
"bbox",
"center_tile"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-11-07T15:54:22.67Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-11-07T15:54:22.383Z"
},
"resource": "https://saylorinnovations.com/api/geo/bbox",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"bounding box around a coordinate",
"lat lon box for a radius search",
"slippy map tile x y",
"tiles needed to cover an area",
"bbox string for an api query"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Bounding box around a coordinate for a radius in km, with an lon,lat bbox string, Web Mercator tile numbers at a zoom level and meters per pixel"
}What the leaf hashes
{"body":"09f581d6af41da23003c6d6c2120c3e99d10295e6c93d3220a0c21c286d7bd9e","id":3968409,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083495180211,"prev":119952,"subject":"x402_bazaar:https://saylorinnovations.com/api/geo/bbox","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (195826 rows).
- 0xaf63bd01059623530bd5890f886af63aa35161a72354887cc0236d7e62ad6661
- 0xdb86b7aee16b0fd6362cf3ec9d6acbb4c659c222e173f15fc0775cc4218cb9a7
- 0x21d9d361d66bc7fb3402667c7b83ad56f033283bcd3c69fac6a818854e70f85f
- 0x40efbf408eb48f5810d83ea67cb04937927ce66a6de1c509865bac0874a018ea
- 0x7f3643fe91f9d29209368de018df7cf13350bacdf17e27eeafb4c86a6621155a
- 0xe2eae7a7b1f0bd4c91ffc0a9ce73968249127f8077816a861a327195f7d61efa
- 0xa452f47b19c25ea05b2f2d40764d9b261125c73cd259447b69bfa38f6f639b4e
- 0x14930479d0a1b54e61d12fbf51184e4cdb5634aeda4da0b8692785da43d5b195
- 0x64be01669c0801c67dc6fae2815ad2a003c984ea3a47ff631ca37572bce95326
- 0x3b54391c6b9d9c930e42a10f4ddb600f63df7fbf17c29aa82a6da4beb4d99826
- 0x186e8b4e2e03b22fdbee246417a7c750ddcdacb3d2ae5732c70aa533c64bf3db
- 0x80274d948c0caee86ba4366988f21012604aa042da85ffaa5d92de97482b6915
- 0x7e081e199af948fbf5222d592d68f17f88800feac5a6cd0d0277d898c49a6646
- 0x6065413194326b10c0e957a6ed77fad045c76a708d9f5e291ca690223cf2d7ba
- 0x2afbeaef1e4de4b2a6d70326e3dc41f9f1c65d4fc46630d217fc932790b0680c
- 0x3235c8a33ac14441f1a12a6515f670286d48b48fa98eb1dce45d902e053abe01
- 0x9ea7c2ecc6985da4b761b0f9096b7858b3ac8e3e47717c3840537fb2ff31c6df
- Day root
- 0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d
- Chained
- 0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb
- Published
- On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa