← The evidence ledger
Evidence row 76969
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://klima.halowerk.com/v1/electricity-co2
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 21817363e6ea4bcb1eba7efc61bf286bbde7bdc9755106b0a5cd3c79339a5ef1
- Leaf
- 0x411e7459cbd8014556d988193d927f245b7c1a998be58389566bb1775f0cb0ce
What was observed
{
"endpoints": [
[
"x402",
"https://klima.halowerk.com/v1/electricity-co2"
]
],
"name": "klima.halowerk.com/v1/electricity-co2",
"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": "Calculates location- or market-based electricity emissions from a published grid factor. 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": {
"accounting_method": "location-based",
"country_or_zone": "DE",
"energy_kwh": 1000,
"factor_kgco2e_per_kwh": 0.3,
"source": {
"published_at": "2026-01-01T00:00:00Z",
"title": "EEA electricity intensity",
"url": "https://www.eea.europa.eu/en/analysis/indicators/greenhouse-gas-emission-intensity-of-1"
}
},
"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": {
"accounting_method": {
"enum": [
"location-based",
"market-based"
],
"type": "string"
},
"country_or_zone": {
"description": "",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"energy_kwh": {
"description": "",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"factor_kgco2e_per_kwh": {
"description": "",
"maximum": 1000000000000,
"minimum": 0,
"type": "number"
},
"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": [
"energy_kwh",
"factor_kgco2e_per_kwh",
"country_or_zone",
"accounting_method",
"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": "2026-10-08T05:40:25.633Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-08T05:40:25.428Z"
},
"resource": "https://klima.halowerk.com/v1/electricity-co2",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Calculates location- or market-based electricity emissions from a published grid factor. 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":"21817363e6ea4bcb1eba7efc61bf286bbde7bdc9755106b0a5cd3c79339a5ef1","id":76969,"kind":"listing","method":"baseline/1","observed_us":1793025493188477,"prev":null,"subject":"x402_bazaar:https://klima.halowerk.com/v1/electricity-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).
- 0x411e37fac3e79c00e4809edfc307b29fd680e300ab5a6f744d8d39484c94d0c8
- 0x158cb112d68a55fe4a9bf246f7b59df24aa85afce77e910b02dfb2f312d77e97
- 0x4a5c377cea65f3dcc68053764c4456db4de6667307b2bfaea4b7e5c22eb9479c
- 0x5c8962b7f1d7ed3c7ccfb2ff2a9d4d5a841a3c907003de24a9cdfce4eeb868c2
- 0xa6b37c8e95e05400fe53b3fdf944570e512144f224acafa4039bce1b934ee12b
- 0x89c6b9bcc172735abc79d20a74edd84685528cb09ff4affc6a78c2bfd125f4ce
- 0xcc8164005b77c6ddf313865b25a9b6838f1880234ef64b28105f71877761c376
- 0x9dc45958f54dc522f78d6ccbf1b4904b1dcf99eb0bc73d7811a6a6c54d3c75c0
- 0x297e778dc632079ae966811cbed1ce7e880ec88e6c6fbd70ae0259c8556afdc3
- 0x61ddb91fde9e2c921e12d8fcfd92154f500278c092641e51eabcf667263cd2b9
- 0x475d2fbee38b77be440946f3f083a3953187376db2f7f57a3a3db41905aa12b6
- 0xe2bb2a30c74e0bf16b8b75c332bdd45334d0338bef3f3022b7ea7b55718e1369
- 0xd406739acce2ba016f8d49081b15f266a4ea4a0b0fc5ef171c89c8fd2dda4d80
- 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
- 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
- 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae