← The evidence ledger
Evidence row 66079
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.duoleads.com/v1/geo/geohash
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- bd90a87731f9f18d175e9360c3839e2fc293d4aa85d174e8a634e03858c8af6f
- Leaf
- 0xa46a5bafa704608e7a79ab6cce5156da87f7f71ec5eb7922292423c9bef8831e
What was observed
{
"endpoints": [
[
"x402",
"https://api.duoleads.com/v1/geo/geohash"
]
],
"name": "Duo Data Utilities",
"owner_address": "0xcd673f7e1dad254347aeab6be0defe8b9c6b3a39",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39",
"scheme": "exact"
}
],
"description": "Encode a WGS-84 latitude and longitude to a geohash at a chosen precision, or decode a geohash back to its bounding box, centre point and error bounds in metres. Encoding also returns the eight neighbouring cells, which is what a caller needs to do proximity search over a geohash-indexed store without a spatial database.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"lat": "52.3728",
"lon": "4.8936",
"op": "encode",
"precision": "9"
},
"type": "http"
},
"output": {
"example": {
"data": {
"bbox": {
"max_lat": 52.37281322479248,
"max_lon": 4.893636703491211,
"min_lat": 52.37277030944824,
"min_lon": 4.893593788146973
},
"center": {
"lat": 52.37279176712036,
"lon": 4.893615245819092
},
"error_m": {
"lat": 2.39,
"lon": 1.46
},
"geohash": "u173zq5mt",
"neighbours": {
"e": "u173zq5mw",
"n": "u173zq5mv",
"ne": "u173zq5my",
"nw": "u173zq5mu",
"s": "u173zq5mm",
"se": "u173zq5mq",
"sw": "u173zq5mk",
"w": "u173zq5ms"
},
"precision": 9
},
"meta": {
"computed_at": "2026-09-28T12:00:00.000Z",
"deterministic": true,
"disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
"price_usd": "0.05",
"request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D"
},
"ok": true,
"route": "/v1/geo/geohash",
"version": "1.0.0"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"geohash": {
"description": "Geohash to decode, 1-12 characters. Required when op=decode.",
"maxLength": 64,
"pattern": "^[0-9bcdefghjkmnpqrstuvwxyz]{1,12}$",
"type": "string"
},
"lat": {
"description": "WGS-84 latitude, -90 to 90. Required when op=encode.",
"maxLength": 64,
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"type": "string"
},
"lon": {
"description": "WGS-84 longitude, -180 to 180. Required when op=encode.",
"maxLength": 64,
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"type": "string"
},
"op": {
"default": "encode",
"description": "encode (default): lat/lon to geohash. decode: geohash to bounding box.",
"enum": [
"encode",
"decode"
],
"maxLength": 64,
"type": "string"
},
"precision": {
"default": "9",
"description": "Geohash length 1-12, default 9 (about 4.8 m).",
"maxLength": 64,
"pattern": "^[+-]?\\d+$",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"bbox": {
"properties": {
"max_lat": {
"type": "number"
},
"max_lon": {
"type": "number"
},
"min_lat": {
"type": "number"
},
"min_lon": {
"type": "number"
}
},
"required": [
"min_lat",
"min_lon",
"max_lat",
"max_lon"
],
"type": "object"
},
"cell_height_m": {
"type": "number"
},
"cell_width_m": {
"type": "number"
},
"center": {
"properties": {
"lat": {
"type": "number"
},
"lon": {
"type": "number"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"error_m": {
"properties": {
"lat": {
"type": "number"
},
"lon": {
"type": "number"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"geohash": {
"type": "string"
},
"neighbours": {
"properties": {
"e": {
"type": [
"string",
"null"
]
},
"n": {
"type": [
"string",
"null"
]
},
"ne": {
"type": [
"string",
"null"
]
},
"nw": {
"type": [
"string",
"null"
]
},
"s": {
"type": [
"string",
"null"
]
},
"se": {
"type": [
"string",
"null"
]
},
"sw": {
"type": [
"string",
"null"
]
},
"w": {
"type": [
"string",
"null"
]
}
},
"required": [
"n",
"ne",
"e",
"se",
"s",
"sw",
"w",
"nw"
],
"type": "object"
},
"precision": {
"type": "integer"
}
},
"required": [
"geohash",
"precision",
"bbox",
"center",
"error_m"
],
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/geo/geohash"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"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/v1791433856/bazaar-icons/16212cbac45fe9af.png",
"lastUpdated": "2026-10-10T17:00:22.802Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-10T17:00:22.274Z"
},
"resource": "https://api.duoleads.com/v1/geo/geohash",
"serviceName": "Duo Data Utilities",
"tags": [
"deterministic",
"no-api-key",
"geo",
"geohash"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Encode a WGS-84 latitude and longitude to a geohash at a chosen precision, or decode a geohash back to its bounding box, centre point and error bounds in metres. Encoding also returns the eight neighbouring cells, which is what a caller needs to do proximity search over a geohash-indexed store without a spatial database."
}What the leaf hashes
{"body":"bd90a87731f9f18d175e9360c3839e2fc293d4aa85d174e8a634e03858c8af6f","id":66079,"kind":"listing","method":"baseline/1","observed_us":1793025459658453,"prev":null,"subject":"x402_bazaar:https://api.duoleads.com/v1/geo/geohash","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.