← The evidence ledger
Evidence row 76976
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://klima.halowerk.com/v1/waste-co2
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- d983f062927ffc6de301dca68361f207608d3af4be1682dd9f095fa6b141b13f
- Leaf
- 0x601b8e26d56acf19d2f7f7464c77bc0625d8a6448c29c7e10784213adca2ef1c
What was observed
{
"endpoints": [
[
"x402",
"https://klima.halowerk.com/v1/waste-co2"
]
],
"name": "klima.halowerk.com/v1/waste-co2",
"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": "Calculates waste-treatment emissions by route from published treatment factors. 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": {
"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"
},
"treatments": [
{
"factor_kgco2e_per_tonne": 20,
"mass_tonnes": 1,
"material": "paper",
"treatment": "recycling"
}
]
},
"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": {
"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"
},
"treatments": {
"items": {
"additionalProperties": false,
"properties": {
"factor_kgco2e_per_tonne": {
"description": "",
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": "number"
},
"mass_tonnes": {
"description": "",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"material": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"treatment": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
}
},
"required": [
"material",
"treatment",
"mass_tonnes",
"factor_kgco2e_per_tonne"
],
"type": "object"
},
"maxItems": 1000,
"minItems": 1,
"type": "array"
}
},
"required": [
"treatments",
"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": "2026-10-23T02:02:28.235Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-23T02:02:28.046Z"
},
"resource": "https://klima.halowerk.com/v1/waste-co2",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Calculates waste-treatment emissions by route from published treatment factors. 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":"d983f062927ffc6de301dca68361f207608d3af4be1682dd9f095fa6b141b13f","id":76976,"kind":"listing","method":"baseline/1","observed_us":1793025493196280,"prev":null,"subject":"x402_bazaar:https://klima.halowerk.com/v1/waste-co2","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).
- 0x601ba2baf5dd3430d13d7169f66f1926c17b1dbf58cdb32633a020ddea8c603d
- 0x896a8d67775e5d405552a6682b6b5668567bce0659cab990989089e73dc6fd26
- 0xfbf4369a9d9e1abd5a809d771eb4fbecf5d08f0bdd6ce3aec56844087677f75a
- 0x4a667d027d9d8f3363bb09c59e2df789327d37e054b42f74e4b0b9caf6b17a81
- 0x91ef09998b3c81fbc4f07118f321ed933a6516b06793268e82887f6206a88b71
- 0x29dccc81b816b86cb5839c355654f1fae8874894a6a379debe61f4f10f4ffc96
- 0xcdb82198a4e67ae7b3720f49b7efcd639aa3aae2ee6d8528ec83a36c1cb83045
- 0x1380061ca05c2a539286ec122b1f5d4fbdbcb17ac5f1ca308424304e257864ad
- 0xac936935e59643d4e57abb3bdcf6fb37bcd1763485f00fbb4d033b9fac75bd5a
- 0xbc2e807bf00b2ed1c806b85b0cbba8abd3b9788e0e8000d164ef64dfc99a3dcb
- 0xa50fca837a4f035829bddff38d023aff0ec4482f9bb5df60ea5b321b01e3e922
- 0xf4e3bedc99674db9d8ab4bc7655992ec76f822b327e6c89599b0baa3756fbd19
- 0x89fcaf55e37dd777228f271b79ea895534a66ec0d184363c2a6eb1b4d23c9ef1
- 0x216cebb9ae5414599109a02297c4817d7d1c6b1394afeb97efe38e32f0053974
- 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae