← The evidence ledger
Evidence row 119997
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/health/bac
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 89269bbf1fdb0a0556d5d5cd5dadce97048ced47e0228cb52a8bbcad482e119d
- Leaf
- 0xa6c9911c8c494c9fee8e1991865ed8c810efb57491d799e3d3490edc2772de69
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/health/bac"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:blood-alcohol-es",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:blood-alcohol-es",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:137",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:blood-alcohol-es",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:42161",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"memo": "saylor:datadesk:blood-alcohol-es",
"reference": "9quZkRFZf71gcsffWAPoCQawyXzCDNgcoc88b81ZinrX",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpibG9vZC1hbGNvaG9sLWVzdGltYXRlIiwicmVmZXJlbmNlIjoiOXF1WmtSRlpmNzFnY3NmZldBUG9DUWF3eVh6Q0ROZ2NvYzg4YjgxWmluclgiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ1NDQ3NzUwNX0.QN9L2S0IktU65nK2h-quD2fnbya_K1mRRwnPMawPlwQ"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
"memo": "saylor:datadesk:blood-alcohol-es",
"reference": "7a9Cc3fJ9YjrC8siJcUF7dutFJPRyJyR55vwJ2NFw5vq",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpibG9vZC1hbGNvaG9sLWVzdGltYXRlIiwicmVmZXJlbmNlIjoiN2E5Q2MzZko5WWpyQzhzaUpjVUY3ZHV0RkpQUnlKeVI1NXZ3SjJORnc1dnEiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ1NDQ3NzUwNX0.TsU4ocImgi3r3upr_l9zU5ojVeMGXdEUBd_GWy9AKc4"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "92424",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:blood-alcohol-es",
"native": true,
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"quotedLamports": "95283",
"reference": "6SDEjrsSkRHNvno3Eu9CoTxWNvBPY1AndQXpCoRPoY1H",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpibG9vZC1hbGNvaG9sLWVzdGltYXRlIiwicmVmZXJlbmNlIjoiNlNERWpyc1NrUkhOdm5vM0V1OUNvVHhXTnZCUFkxQW5kUVhwQ29SUG9ZMUgiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTI0MjQsImV4cCI6MTc5MjQ1NDQ3NzUwNX0.BycHHdw7tBEf7-EeSUl2a-hQbU6M1h6TB1ib9LLGhiE",
"solUsdPrice": 104.95
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "Estimated blood alcohol concentration from weight, sex, drinks and hours using the Widmark formula, with sobering time and legal limit references",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"drinks": "4",
"hours": "2",
"sex": "male",
"weight_kg": "75"
},
"type": "http"
},
"output": {
"example": {
"alcohol_grams": 56,
"estimated_bac_percent_now": 0.0798,
"hours_until_below_0_08": 0,
"hours_until_sober": 5.3,
"inputs": {
"hours_elapsed": 2,
"sex": "male",
"standard_drinks": 4,
"weight_kg": 75
},
"legal_limit_references": {
"commercial_driver_us": 0.04,
"most_of_europe": 0.05,
"us_and_uk_england": 0.08,
"utah_washington_us": 0.05,
"zero_tolerance_under_21_us": 0.02
},
"level": "noticeable impairment",
"note": "Rough Widmark estimate using 14 g of alcohol per standard drink, 0.015% per hour elimination and average body-water factors (0.68 male, 0.55 female). Real BAC varies widely with food, metabolism and drink strength. NEVER use this to decide whether it is safe to drive; if you have been drinking, do not drive.",
"peak_bac_percent": 0.1098,
"source": "Widmark formula"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"drinks": {
"description": "Standard drinks consumed (14 g alcohol each)",
"type": "string"
},
"hours": {
"description": "optional hours since the first drink, default 0",
"type": "string"
},
"sex": {
"description": "male or female",
"type": "string"
},
"weight_kg": {
"description": "Body weight in kg",
"type": "string"
}
},
"required": [
"weight_kg",
"sex",
"drinks"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"alcohol_grams": {
"description": "Alcohol grams",
"type": "number"
},
"estimated_bac_percent_now": {
"description": "Estimated bac percent now",
"type": "number"
},
"hours_until_below_0_08": {
"description": "Hours until below 0 08",
"type": "number"
},
"hours_until_sober": {
"description": "Hours until sober",
"type": "number"
},
"inputs": {
"description": "Inputs used: weight, sex, standard drinks and hours since first drink",
"properties": {
"hours_elapsed": {
"description": "Hours elapsed",
"type": [
"number",
"null"
]
},
"sex": {
"description": "Sex used in the Widmark formula",
"type": [
"string",
"null"
]
},
"standard_drinks": {
"description": "Standard drinks",
"type": [
"number",
"null"
]
},
"weight_kg": {
"description": "Weight in kilograms",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"legal_limit_references": {
"description": "Legal limit references",
"type": "object"
},
"level": {
"description": "Level",
"type": "string"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"peak_bac_percent": {
"description": "Peak bac, as a percentage",
"type": "number"
},
"source": {
"description": "Data source the values come from",
"type": "string"
}
},
"required": [
"inputs",
"estimated_bac_percent_now",
"level"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-10-19T23:59:17.556Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-19T23:59:17.271Z"
},
"resource": "https://saylorinnovations.com/api/health/bac",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"blood alcohol content estimate",
"bac calculator for 4 drinks",
"how long until i am sober",
"widmark formula bac",
"when will bac fall below 0.08"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Estimated blood alcohol concentration from weight, sex, drinks and hours using the Widmark formula, with sobering time and legal limit references"
}What the leaf hashes
{"body":"89269bbf1fdb0a0556d5d5cd5dadce97048ced47e0228cb52a8bbcad482e119d","id":119997,"kind":"listing","method":"baseline/1","observed_us":1793025617057157,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/health/bac","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).
- 0xa6c9a90e0ce3a574e658494694b7209b83a2a6498984e24ce2cecbe04727cc9f
- 0x59b184a1946933b4e399b07f1f153de099dcf60c31c0944499ea243ebb52e99b
- 0x3e93383e934fbc3bd6be3880adf59caac512e986beeb70d96f9ff93aa51b61ba
- 0x1defffc8159947626d8261e1f83343cbdd2ee91d6e041bc890345dba6e79b7b8
- 0x51b2c4c3a1ae2397e3b0f65b5a9d7e8c1a86373f8ad9bb13d2f56781cbc29bfb
- 0x277e92e7b8bbb2644787e40979c2cc68bf83372db3e687e68f1c074d2d1eaa03
- 0xb6ca6944c10741b063cdb20208f40db38dc0d03c531d5468eba33f4bd70976be
- 0xf6310dd9e852ac0f1ea5d503b0b2cebd3be5302008b8b2e25e814771907f4f2e
- 0xe6ee0f234ffe56205700b1e8dd7802c20485340595800c1900625aea4c3ff77f
- 0x8898ab8e9245665c91957f93ced1d4675156754992f0651eb80aa5869ec8fd1b
- 0xf9b4ada16aca6f9b63c09b94519008e1b94357a9d352c245023758b56b82d0b1
- 0x1e464fcb484a1e782f9fe44be5118a9de934eb533c96ba10fc7d20e3a3e4711c
- 0x292ebdce6b8d3d7ef08ad646a0fd97dee9313ab55c1a350807d9f3013794c37a
- 0x428106f4ae4ec142f17aebf6fa50935242f8d3f1c211cf95d6351d03d11da2b7
- 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae