← The evidence ledger
Evidence row 76970
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://klima.halowerk.com/v1/emission-factor
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- cad4c6ee32d57406554ba602a12c1f4cc486fcb4c1954a625be4577a725253c5
- Leaf
- 0xf256d2540ca78b83f3e0078c67d66246670484773941813ae8c6ef6c54e5e12c
What was observed
{
"endpoints": [
[
"x402",
"https://klima.halowerk.com/v1/emission-factor"
]
],
"name": "klima.halowerk.com/v1/emission-factor",
"owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
"raw": {
"accepts": [
{
"amount": "3000",
"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": "Selects a published emissions factor by activity, region and source edition. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"activity": "diesel",
"factors": [
{
"activity": "diesel",
"factor": 1,
"region": "GB",
"scope": "WTW",
"unit": "kgCO2e/unit"
}
],
"region": "GB",
"source": {
"published_at": "2026-06-10T00:00:00Z",
"title": "UK 2026 conversion factors",
"url": "https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2026"
}
},
"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": {
"activity": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"factors": {
"items": {
"additionalProperties": false,
"properties": {
"activity": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"factor": {
"description": "",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"region": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"scope": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"unit": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"activity",
"region",
"factor",
"unit",
"scope"
],
"type": "object"
},
"maxItems": 10000,
"type": "array"
},
"region": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"source": {
"additionalProperties": false,
"properties": {
"published_at": {
"format": "date-time",
"type": "string"
},
"title": {
"description": "",
"maxLength": 300,
"minLength": 3,
"type": "string"
},
"url": {
"format": "uri",
"type": "string"
}
},
"required": [
"url",
"published_at",
"title"
],
"type": "object"
}
},
"required": [
"activity",
"region",
"factors",
"source"
],
"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": "2026-10-08T05:40:24.669Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-08T05:40:24.428Z"
},
"resource": "https://klima.halowerk.com/v1/emission-factor",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Selects a published emissions factor by activity, region and source edition. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice."
}What the leaf hashes
{"body":"cad4c6ee32d57406554ba602a12c1f4cc486fcb4c1954a625be4577a725253c5","id":76970,"kind":"listing","method":"baseline/1","observed_us":1793025493189676,"prev":null,"subject":"x402_bazaar:https://klima.halowerk.com/v1/emission-factor","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).
- 0xf2569323f2367da3820b1eebd706987e54e5c8464f14900ee639f44c430f4ad5
- 0x0237062c63e4742f0ee40408fdc960e8aa3765fa8d5dffe74d10be5d22293271
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- 0x161bc95907e1768c46d1dc215fb17c8621af146d0935e711f48c4679d58c59fd
- 0x014985ce4556a22b6e0c8570e38b572cd74471f5dc52fc9b002f2df7890920ee
- 0x9576f5723121afee9e7bf4dc6bcf6826e0765581b8c8d5a72e811af1d8b34ede
- 0x6f82408cac90c67d7879429efa1eb23a962a0f4fa6bc11df4ed1a2da805bb3de
- 0x68ce90d522e4b083ae0f447011e9a4c842bf9c96bf5705f4796cbe51f5f2a256
- 0x747b8d129940c04d50dabe8a6f73c88489e36e50ca6f34c4b98a90d3c8238e2e
- 0xed3de41377d308fca21bfc95ef194b731c0ae2a53b6db64d80352c5f19d0e790
- 0x3e439c99553dde4ddc1a9189bc043fa92a4b6b41e39e7e6b21c10148f9558a78
- 0xa26f0437cba4d7d64f1cf98bf4f490e1ebb6f66a5e2331537b7ba8b3061084e0
- 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
- 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
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- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae