← The evidence ledger
Evidence row 4166679
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/geo/bbox
- Recorded
- Previous row
- #3968409
- Body SHA-256
- 7d537bb23a62d9c042dffe4bf66ad5132c71bb0196d4257e1e4d885bb1177064
- Leaf
- 0x0f5a94e0c0b12eafd083912157feda68a77dd3f2097b5a9e6844f5d985dd2c2a
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": "2026-11-07T22:41:59.901Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-11-07T22:41:59.431Z"
},
"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":"7d537bb23a62d9c042dffe4bf66ad5132c71bb0196d4257e1e4d885bb1177064","id":4166679,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794170605227364,"prev":3968409,"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 (183509 rows).
- 0x0f5bcbbc65df5cfa050239526845da216c95294e9f5cacc702139f16900ff212
- 0x8eb9f37d1a2947904226f61030fd6fccfe764c96e2fa804e6a7ff97ad5fc4167
- 0xaa8b7872ccb52ce6710775be0ed90cc38301557544178ad28ab2918dbf003fd5
- 0x5980621fe53b115ac67dc926429a3ade3bd2aa3203b8534a80b2080076b60680
- 0xd5dbac5bc21946c9f9a18e3f4d99f5fa299e61de9b090de930192cace70abbfe
- 0xbe53c914fda6fb5ab627f74e9f17f50b435b73fe083ab525d5449e324d557b1c
- 0xed855ee25da51c6e5ab571916c3e1feae262caebd4238980cb2dffcc5caaa5e7
- 0x69af2990ce651b8c5a8634421e2d097de144ac0d2b6f9d5b19c4778a3d2392c5
- 0x1562145e57288f73cccfa99e8dbf19a602d3abdded616c68124aa54a5da90b86
- 0xa89606eb12793a63a4cfef762b153c5d4654c5f961b3f92632733d3a63f707ff
- 0x456d5142b343ebd9c2c83689ccf9cc1b0acf52515f5ea24a43c70c08e0828fee
- 0x3a6f0229fc8acdacdbfe08425a4d80a3ddb8137966a990438329b99d7a77f211
- 0x8eeafd77d91adba517136befb22c7b48ec24c8bed762e77ea4588404b10285ad
- 0x60029afb8ac4d0df109f7e7c576e76ef3b8415e9897d7058b9896e1849d45dc9
- 0x5ab7d497fb526e0d8236640009404f28f3d406170d57f1fe2b2b64c714bc1efc
- 0x1962b987e02fbb17a8951e440b8c94ffca5debb84fd17d27b5f1c60361f21c36
- 0x2031bf8fabeeff87db710efedafb2b06df0de0b25ca93fb078786a0ebfe9bbc5
- 0x1f0ff2af9da38fef1beef5d2dbcf41f592dca17729b7ab9b9c0b6ef354dc3b83
- Day root
- 0xbf84ec37f88c5f23d2144bd7dbc1ea0f8edc93b3764a885a7164b7923ff3460b
- Chained
- 0x9fea188e4965f50de727e97c40e18d5ff2c2ddbfd4f1ae65e22ddd6f676bccfc
- Published
- On Arc Testnet, block 71451618: 0xb5273480942a54cd07f291b8319e59976f8d9d0583181c764eed04c9b3f7a022