← The evidence ledger
Evidence row 2201924
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://environment-screen.x402tookit.com/area-environment-screen
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f9194f836299835e080da0ce005992212635d3fdd63a50dbb723146b6d9c5f0d
- Leaf
- 0x9c1a8156fedf6aa7bcda4853b7c6cab79a707c9ee31784ef923681fc52fa1837
What was observed
{
"endpoints": [
[
"x402",
"https://environment-screen.x402tookit.com/area-environment-screen"
]
],
"name": "Environment Screen",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Environmental screen for a US place: current modelled AQI and PM2.5 plus count of EPA TRI facilities in the ZIP.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"lat": 42.3554,
"lon": -71.1316,
"zip": "02134"
},
"type": "http"
},
"output": {
"example": {
"air": {
"category": "Moderate",
"nitrogenDioxide": 27.8,
"ozone": 42,
"pm10": 8.6,
"pm2_5": 7.5,
"time": "2026-10-20T20:00",
"usAqi": 53
},
"asOf": "2026-10-21T00:33:15.809Z",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"flagCount": 1,
"notChecked": [
"flood, wetlands, wildfire, noise, radon, lead paint, water quality: use other shelves",
"Superfund / cleanup sites (Envirofacts tables unavailable)",
"…3 more"
],
"reasons": [
"6 EPA TRI facilities are on record in ZIP 02134 (open and closed together)."
],
"source": "Open-Meteo Air Quality API (CAMS model) + EPA Envirofacts TRI",
"sourceUrl": "https://www.epa.gov/enviro/envirofacts-data-service-api",
"summary": "US AQI 53 (Moderate) at the point; 6 TRI facilities in ZIP 02134. 1 flag(s) raised.",
"tri": {
"facilitiesInZip": 6,
"zip": "02134"
},
"verdict": "FLAGS_RAISED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"lat": {
"description": "Latitude",
"type": "number"
},
"lon": {
"description": "Longitude",
"type": "number"
},
"zip": {
"description": "5-digit US ZIP code of the place",
"type": "string"
}
},
"required": [
"lat",
"lon",
"zip"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"air": {
"properties": {
"category": {
"type": [
"null",
"string"
]
},
"nitrogenDioxide": {
"type": [
"null",
"number"
]
},
"ozone": {
"type": [
"null",
"number"
]
},
"pm10": {
"type": [
"null",
"number"
]
},
"pm2_5": {
"type": [
"null",
"number"
]
},
"time": {
"type": [
"null",
"string"
]
},
"usAqi": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"flagCount": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"tri": {
"properties": {
"facilitiesInZip": {
"type": [
"null",
"number"
]
},
"zip": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:52:40.185Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:52:40.015Z"
},
"resource": "https://environment-screen.x402tookit.com/area-environment-screen",
"serviceName": "Environment Screen",
"tags": [
"environment",
"air-quality",
"epa",
"due-diligence"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Environmental screen for a US place: current modelled AQI and PM2.5 plus count of EPA TRI facilities in the ZIP."
}What the leaf hashes
{"body":"f9194f836299835e080da0ce005992212635d3fdd63a50dbb723146b6d9c5f0d","id":2201924,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810219070,"prev":null,"subject":"x402_bazaar:https://environment-screen.x402tookit.com/area-environment-screen","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- 0x951f7f49f17ef08fde2dc44fe547787d24ae7f6cfccafddcf8b7c95fec0df7bc
- 0xa7be5a6d993cdfc59b542b1932e7b52212f4eb5c1f8918497afbcead619b212f
- 0x57bdf7c430891d7fd448598022e9f0ee445831ccd52d8f5ac21510453d5d7c10
- 0x2c6f39087355acc509efeeb5acc2b053a76d27b6781c9d8e9f93a97b9143c114
- 0x0e13cf40d0b89aa0eb76e1a282750068c08de4ddb45d07b194da06495832ada0
- 0x06c5c650fe15e53a20417fb1c02bb2c13f88e7fd3b01e7936f049daee10dd184
- 0x6e123bc246b97c2cceb9c9668bad4c554655bc80220acb1cc7a5a371101936c1
- 0x10cbdac0b6100e8ec14858ec371897bb7e7755b1c4220899283c56fdde099776
- 0x44c6729e9895b3e93c9c4ab87dbe86c6aa44f0b1130e815e00f315920a4c640e
- 0x13372d9573063408d81df51991faad9353f3d2ff284b3f6343d434448850fec0
- 0xdff61622855886d80ecda4fb808422c854d0801605b73184332cf83604a730ff
- 0x9c91ecb84461aa4cb2a891252746755d862a88fe9bad822700cdb99eaab2edca
- 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
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- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af