← The evidence ledger
Evidence row 119952
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/geo/bbox
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- bb2920775636c8d558acfebaf44e50d60a02f3f3463e6ff5d51f1fab066a6612
- Leaf
- 0xc44a139a8dc8ceb4156b1febe83f1bc9410cdd983b68390cf0d6f7293d2b3880
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": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"memo": "saylor:datadesk:bbox-tiles",
"reference": "69rkw9KTVxz8QLmzfosNoqnPwErkZfKyqaDnLo4fBfm4",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpiYm94LXRpbGVzIiwicmVmZXJlbmNlIjoiNjlya3c5S1RWeHo4UUxtemZvc05vcW5Qd0Vya1pmS3lxYURuTG80ZkJmbTQiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjM4MzIzNTc0M30.GCG8cHVHChVHjLpk39uN-vzKzgnhaONYQ1UWcb5I4PQ"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"memo": "saylor:datadesk:bbox-tiles",
"reference": "8zdvQki318jdwJMPLhd71yed4aX6HmGJDc5vKNTuzHsL",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpiYm94LXRpbGVzIiwicmVmZXJlbmNlIjoiOHpkdlFraTMxOGpkd0pNUExoZDcxeWVkNGFYNkhtR0pEYzV2S05UdXpIc0wiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjM4MzIzNTc0M30.-3HjZ4Ls5LkO0HdoDpTfd48Dg_oszFjztgqOLCrWeF0"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "92257",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:bbox-tiles",
"native": true,
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"quotedLamports": "95111",
"reference": "GxdmMyUuzQiUoM5Y83PzXuPsT1K1MnWZy3qhryM5rXHJ",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpiYm94LXRpbGVzIiwicmVmZXJlbmNlIjoiR3hkbU15VXV6UWlVb001WTgzUHpYdVBzVDFLMU1uV1p5M3FocnlNNXJYSEoiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTIyNTcsImV4cCI6MTc5MjM4MzIzNTc0M30.Y7xIqh-VfJjlTnYxo1hy-9Xmv1idJ0jgskXPoE_XMJo",
"solUsdPrice": 105.14
},
"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"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"area_km2": {
"description": "Area km2",
"type": [
"number",
"null"
]
},
"bbox": {
"description": "Bounding box with min and max latitude and longitude",
"type": "object"
},
"bbox_string_lonlat": {
"description": "Bbox string lonlat",
"type": "string"
},
"center": {
"description": "Centre or facility that produced the record",
"type": "object"
},
"center_tile": {
"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"
},
"crosses_antimeridian": {
"description": "Crosses antimeridian",
"type": [
"boolean",
"null"
]
},
"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": {
"description": "Tile range",
"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": "2026-10-19T04:11:55.776Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-19T04:11:55.604Z"
},
"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":"bb2920775636c8d558acfebaf44e50d60a02f3f3463e6ff5d51f1fab066a6612","id":119952,"kind":"listing","method":"baseline/1","observed_us":1793025616989519,"prev":null,"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 (296695 rows).
- 0xc44a245f9f0743258b83decb0f329407fbacf5df6ff3d571a2420a308eb48d45
- 0x615fe321d8e666acd12d80c2c04e4ec02787a5e3ccc38ae925664cd1aa28d82f
- 0xfe1a629f2cc1342a0ae0bfcc80aa30fbea00cf11dc0cdd759e73c753a2a50b60
- 0x9edd8bdedfe64929d16625350ebe00ff2e02232579dad570bbcbad485c95da74
- 0xdc1c9b82d02256717ca8b9e3f2620efa5567fc6cfe958641f42200e6dbb90bff
- 0x3e909ad612ed552a5dfe4f26350e4d8ec1178d135f62c5e304ffd6d82fdd25fa
- 0x324caf079e6c8b84964dc29526b43f68d6b20b66f711924d8b26e8c2b7e6caa2
- 0x0b41d63775b81562a70044f84432d65eab3ebc91d0e81313677e74690989f241
- 0x6703d17c3f191807991609a113df4758f086b9964c89dfc72962985e8998f47f
- 0xd7fa137fd7aae82c376f90cb43e2e9cf874e762e0293fed3b902e8bde35cc36b
- 0x463fef738ef71a01d4aa9ac1c6836fcf6802cdaa7de01bbe42397d79d35d8671
- 0x4d1a020de7fc0aa076daeb62ebb904d51ac6c607b605eb63a7855f34d7b69f1b
- 0x641fba1f23ec69d96721e34ace1926954d835b9614cb5eae215a069c056399b8
- 0xdbe2e8dd65ea1248b2936612538f18268abd5cf27ebdab3737694571ad496004
- 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
- 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae