← The evidence ledger
Evidence row 121563
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://space.halowerk.com/v1/methane-leak-sat
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 11a1e3fd78145ddbd0c08a412642ce1469e95f7217548290665ac50ea283860e
- Leaf
- 0x337bdbbe915eaccc24058367fc02da831599c4e5d1f6743b68d1ffe477fc25eb
What was observed
{
"endpoints": [
[
"x402",
"https://space.halowerk.com/v1/methane-leak-sat"
]
],
"name": "space.halowerk.com/v1/methane-leak-sat",
"owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
"raw": {
"accepts": [
{
"amount": "4000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"asset": "USDC",
"assetTransferMethod": "eip3009",
"eip712Domain": {
"chainId": 8453,
"name": "USD Coin",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"version": "2"
},
"name": "USD Coin",
"network_name": "Base Mainnet",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"scheme": "exact"
}
],
"description": "Sums enhancement_ppm×pixel_area, multiplies by wind speed, plume orientation, and a caller-supplied conversion factor, and reports the resulting proxy and optional kg/h estimate. It does not retrieve satellite data, remove background, solve atmospheric transport, determine source location, or validate the conversion factor.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"conversion_kg_per_ppm_m3": 6.56e-7,
"pixels": [
{
"enhancement_ppm": 0.18,
"pixel_area_m2": 400,
"pixel_id": "px-1"
},
{
"enhancement_ppm": 0.31,
"pixel_area_m2": 400,
"pixel_id": "px-2"
},
{
"enhancement_ppm": 0.12,
"pixel_area_m2": 400,
"pixel_id": "px-3"
}
],
"plume_orientation_factor": 0.85,
"wind_speed_m_s": 4.2
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"conversion_kg_per_ppm_m3": {
"description": "Caller-supplied mass conversion factor; use zero to request only the unitless proxy.",
"maximum": 1000000000,
"minimum": 0,
"type": "number"
},
"pixels": {
"items": {
"additionalProperties": false,
"properties": {
"enhancement_ppm": {
"maximum": 1000000000,
"minimum": 0,
"type": "number"
},
"pixel_area_m2": {
"maximum": 1000000000000,
"minimum": 0.000001,
"type": "number"
},
"pixel_id": {
"maxLength": 128,
"minLength": 1,
"type": "string"
}
},
"required": [
"pixel_id",
"enhancement_ppm",
"pixel_area_m2"
],
"type": "object"
},
"maxItems": 100000,
"minItems": 1,
"type": "array"
},
"plume_orientation_factor": {
"description": "Caller-estimated fraction of wind perpendicular to the integration cross-section.",
"maximum": 1,
"minimum": 0,
"type": "number"
},
"wind_speed_m_s": {
"maximum": 200,
"minimum": 0,
"type": "number"
}
},
"required": [
"pixels",
"wind_speed_m_s",
"plume_orientation_factor",
"conversion_kg_per_ppm_m3"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-08T06:13:36.749Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-08T06:13:36.545Z"
},
"resource": "https://space.halowerk.com/v1/methane-leak-sat",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Sums enhancement_ppm×pixel_area, multiplies by wind speed, plume orientation, and a caller-supplied conversion factor, and reports the resulting proxy and optional kg/h estimate. It does not retrieve satellite data, remove background, solve atmospheric transport, determine source location, or validate the conversion factor."
}What the leaf hashes
{"body":"11a1e3fd78145ddbd0c08a412642ce1469e95f7217548290665ac50ea283860e","id":121563,"kind":"listing","method":"baseline/1","observed_us":1793025620074572,"prev":null,"subject":"x402_bazaar:https://space.halowerk.com/v1/methane-leak-sat","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).
- 0x337beca66a13c4ae2ce454da7392411fb33967bba32a85f175dffd16e3f2d1fc
- 0x407c9482a8c34f4b90a9770fe4e93f9a2ae781101cb11c4aa52d9ded394fb2c9
- 0x0dfe80f94401887db0091eb1af1b28d2e27b4ad85150c35143c1b2d92da3de86
- 0xc60977221f631baa72a9500629acce40ac6bab79fbb13691b90ac2c121607532
- 0x867985a3148d1e1012c504d43ba02ead4910023844aa4e1b2c41b34f2c05a912
- 0xd750c0d0380c970a42b47b240e26110e849a9edcc2838805b1506bc483e37c49
- 0xdb6cde9e3b51d196f57e90cf1f2ca8b16dc0f33837ea16865a82009f41072e6a
- 0x0d01047446cd10eac324e76aef667779c111a4ede53a8d602aa75adb6d9431bc
- 0xd9be53c84973e568398e1ea9f9b793041cbeded3c0f9e8e2397ac9b282867226
- 0x147a93b247f471325988f4856b3ff7043d5e5fa80b374a5deccea90eab3af0fe
- 0xc99ea26556ddad6b2fde7887de8c0190d3a7c645402227c5a281ba47e02a67e5
- 0x2f4617d7a962f32849050ad5649d9dc4f962fd8618073cfa8519e6f862dfcef8
- 0x08de74b7fb265ddb83e4c673da8a94e5f71829b2e6e7464c71c5138e450f2217
- 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
- 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
- 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae