← The evidence ledger
Evidence row 66496
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.healthtravel-api.workers.dev/api/health/osha-occupational-health
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9d6529afc69f3733a76029711660825be5ede9e3db5c63a339f770a6be384675
- Leaf
- 0x2355958f6174aca55ca44f30c9542b8fd89c5994e43ee644526ec3307b8968aa
What was observed
{
"endpoints": [
[
"x402",
"https://api.healthtravel-api.workers.dev/api/health/osha-occupational-health"
]
],
"name": "SiteCheck Health & Travel",
"owner_address": "0xb8491f953e6860d3b5840b73c60883ff099ceafa",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "J8vnmBx4pS1X7UUBTfz1yWBKiw69Dj2yRGRHDaXBRdhR",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:5042",
"payTo": "0xa4751fCAa83c9669cfe507bb6807507729839be3",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:143",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:480",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:10",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42220",
"payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
"scheme": "exact"
},
{
"amount": "0.002",
"asset": "524C555344000000000000000000000000000000",
"extra": {
"areFeesSponsored": false,
"invoiceId": "aedf7f66-2951-4f19-9b11-08b7e0611c2f",
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rDxNZCDfLxUzeMWGGwsY3sjQT8eoZCf8UJ",
"scheme": "exact"
},
{
"amount": "1531",
"asset": "XRP",
"extra": {
"areFeesSponsored": false,
"invoiceId": "0cb35d52-0201-45cf-8efe-26036c93cdaa",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rDxNZCDfLxUzeMWGGwsY3sjQT8eoZCf8UJ",
"scheme": "exact"
}
],
"description": "OSHA Permissible Exposure Limits (Table Z-1, 29 CFR 1910.1000, read from eCFR): chemical name, CAS number, 8-hour TWA in ppm and mg/m3, and notes such as ceiling or see-other-section. Matches by name words. Up to 20 chemicals per call; not the full OSHA chemical database.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"chemical": "acetic",
"max": "3"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21",
"checkedAt": "2026-10-23T09:36:36.656Z",
"chemicals": [
{
"casNumber": "64-19-7",
"name": "Acetic acid",
"notes": null,
"twaMgM3": 25,
"twaPpm": 10
},
{
"casNumber": "108-24-7",
"name": "Acetic anhydride",
"notes": null,
"twaMgM3": 20,
"twaPpm": 5
}
],
"query": "acetic",
"source": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/section-1910.1000",
"total": 4
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chemical": {
"description": "Chemical name words, letters, spaces, commas and hyphens, 3 to 60 characters",
"type": "string"
},
"max": {
"description": "How many chemicals, 1 to 20 (default 5)",
"type": "string"
}
},
"required": [
"chemical"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-23T21:25:40.761Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-23T21:25:40.59Z"
},
"resource": "https://api.healthtravel-api.workers.dev/api/health/osha-occupational-health",
"serviceName": "SiteCheck Health & Travel",
"tags": [
"health",
"osha",
"occupational"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "OSHA Permissible Exposure Limits (Table Z-1, 29 CFR 1910.1000, read from eCFR): chemical name, CAS number, 8-hour TWA in ppm and mg/m3, and notes such as ceiling or see-other-section. Matches by name words. Up to 20 chemicals per call; not the full OSHA chemical database."
}What the leaf hashes
{"body":"9d6529afc69f3733a76029711660825be5ede9e3db5c63a339f770a6be384675","id":66496,"kind":"listing","method":"baseline/1","observed_us":1793025460665093,"prev":null,"subject":"x402_bazaar:https://api.healthtravel-api.workers.dev/api/health/osha-occupational-health","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.