← The evidence ledger
Evidence row 2201922
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://environment-screen.x402tookit.com/tri-area-summary
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a774c100ec4778605e86cfa54442d355cbba62f16016987e8587df8d810614c6
- Leaf
- 0xb3420b74f1f06f5fe7ec16cd71038fadb2d64312a6b899bcc90c5181f360581d
What was observed
{
"endpoints": [
[
"x402",
"https://environment-screen.x402tookit.com/tri-area-summary"
]
],
"name": "Environment Screen",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Count of EPA Toxics Release Inventory facilities in a US state or county, open versus closed, with a sample list.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"county": "Suffolk",
"limit": 10,
"state": "MA"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T00:33:17.016Z",
"closedFacilities": 3,
"county": "SUFFOLK",
"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.",
"notChecked": [
"facilities below TRI reporting thresholds: absence is not a clean bill",
"Superfund / cleanup sites (Envirofacts tables unavailable)",
"…2 more"
],
"openFacilities": 65,
"reasons": [],
"sample": [
{
"address": "20 OLD COLONY AVE",
"city": "BOSTON",
"county": "SUFFOLK",
"federalFacility": false,
"frsId": "110002012036",
"lat": 42.34,
"locationAccuracyM": 600,
"lon": -71.057778,
"name": "COLE HERSEE CO",
"open": true,
"parentCompany": null,
"state": "MA",
"triFacilityId": "01217CLHRS20OLD",
"zip": "021272467"
},
{
"address": "55 ENTERPRISE ST",
"city": "DORCHESTER",
"county": "SUFFOLK",
"federalFacility": false,
"frsId": "110012709471",
"lat": null,
"locationAccuracyM": null,
"lon": null,
"name": "AGGREGATE INDUSTRIES NORTHEAST REGION INC",
"open": true,
"parentCompany": "HOLCIM (US) INC",
"state": "MA",
"triFacilityId": "01721GGRGT55ENT",
"zip": "02125"
}
],
"source": "EPA Envirofacts TRI_FACILITY",
"sourceUrl": "https://www.epa.gov/enviro/envirofacts-data-service-api",
"state": "MA",
"summary": "SUFFOLK county, MA has 68 TRI facilities on record, 65 open and 3 closed.",
"totalFacilities": 68,
"verdict": "TRI_FACILITIES_FOUND"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"county": {
"description": "County name without 'County', e.g. Suffolk",
"type": "string"
},
"limit": {
"description": "Sample open facilities, 1 to 25 (default 10)",
"type": "integer"
},
"state": {
"description": "2-letter state code, e.g. MA",
"type": "string"
}
},
"required": [
"state"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"closedFacilities": {
"type": [
"null",
"number"
]
},
"county": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"openFacilities": {
"type": [
"null",
"number"
]
},
"reasons": {
"type": [
"array",
"null"
]
},
"sample": {
"items": {
"properties": {
"address": {
"type": [
"null",
"string"
]
},
"city": {
"type": [
"null",
"string"
]
},
"county": {
"type": [
"null",
"string"
]
},
"federalFacility": {
"type": [
"boolean",
"null"
]
},
"frsId": {
"type": [
"null",
"string"
]
},
"lat": {
"type": [
"null",
"number"
]
},
"locationAccuracyM": {
"type": [
"null",
"number"
]
},
"lon": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"open": {
"type": [
"boolean",
"null"
]
},
"parentCompany": {
"type": [
"null",
"string"
]
},
"state": {
"type": [
"null",
"string"
]
},
"triFacilityId": {
"type": [
"null",
"string"
]
},
"zip": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"state": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalFacilities": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:52:46.896Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T22:52:46.75Z"
},
"resource": "https://environment-screen.x402tookit.com/tri-area-summary",
"serviceName": "Environment Screen",
"tags": [
"epa",
"tri",
"toxics",
"county"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Count of EPA Toxics Release Inventory facilities in a US state or county, open versus closed, with a sample list."
}What the leaf hashes
{"body":"a774c100ec4778605e86cfa54442d355cbba62f16016987e8587df8d810614c6","id":2201922,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810211021,"prev":null,"subject":"x402_bazaar:https://environment-screen.x402tookit.com/tri-area-summary","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).
- 0xb3425ab606d727c25d9b473267529a45971a59d1d35becc71e9240e01dbc9c10
- 0x94f8356c66addda51eac10796d04ec8687f1eedbd32f874c084f88a1e2b487e0
- 0xdd1cd4c7accf96acf7d1169218e5b0fa40d7afee8b767946b0203841f3e43cf2
- 0xf0a03a31af63ac94b71b505e819d7d7e209ddf4f3a58bd95c2aab2e5500fab54
- 0xbc4b961b230095502395bcce9ef167c4a626427996ac553f3867ae2d448df9f0
- 0xb9b07bed3a57a5db5a8013fc13c892217d5bb12dfba08cb3808b81b44702446f
- 0xf4118f3ed301a9bd727f275fe098701bcdb9d37cb1654f86055c58f62d6f3375
- 0x53293fca388ad08d0e09afad30b685ff34b05b2d2338bad68225100156d46fb3
- 0x40421b584d96b6fedae5158fc1aed22bba4aa0dbc158debba083c1f9b3814ca9
- 0x2cc4c008ac042414c1435e18b8967a8951803a3709e80e1755e72b47643d44f0
- 0x3d936bbe0e752d535f9e93fbd9c9a8e9f48bd07731621d6903f9ddc4201a8ee0
- 0x21e290c87b8dfbee1c890c9b97a09ed0f5503884eaeabff86472db1c091c14cd
- 0x8f3b097427a1bfae26e9231cb5b00552011a27ad93aa4c0d3e267190fcbbb962
- 0x08da04eef748b7ac08271324db18913501d72c52afa240bf3f08b6da46e3b97f
- 0x834b6b9a36b42da183e2542785e8d2d7548ace455268a81922edbe6020cef644
- 0x2922573a524a0694086782ac45fa3083d3fc3f6a2a479b2105e1e2f06b2916f7
- 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
- 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af