← The evidence ledger
Evidence row 2201302
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://focus-sleep-calc.x402tookit.com/caffeine-decay
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- b225bf4873776d09e23be8877c6361c75a8fd31721d2a6d00f06745406077696
- Leaf
- 0x57676578c132de6b925654d65fd89ef72bca7b5ecc21e245bb47bfb2552229fc
What was observed
{
"endpoints": [
[
"x402",
"https://focus-sleep-calc.x402tookit.com/caffeine-decay"
]
],
"name": "Focus & Sleep Planner",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Caffeine remaining after hours, and the time until it drops below a threshold, from a half-life you can set (default 5 hours).",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"bedtime": "10:00 PM",
"doseMg": 200,
"doseTime": "2:00 PM",
"halfLifeHours": 5,
"hoursElapsed": 10,
"thresholdMg": 25
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-12T01:41:12.828Z",
"bedtimeClock": "10:00 PM",
"belowThresholdAt": "5:00 AM",
"belowThresholdDayOffset": 1,
"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.",
"doseMg": 200,
"doseTimeClock": "2:00 PM",
"halfLifeHours": 5,
"halfLifeTable": [
{
"halfLives": 0,
"hours": 0,
"remainingMg": 200
},
{
"halfLives": 1,
"hours": 5,
"remainingMg": 100
}
],
"hoursElapsed": 10,
"hoursFromDoseToBedtime": 8,
"hoursUntilBelowThreshold": 15,
"notChecked": [
"your own caffeine half-life (genetics, pregnancy, medicines, smoking and liver health change it)",
"the real caffeine content of any drink",
"…2 more"
],
"percentRemaining": 25,
"reasons": [
"Each half-life halves the amount; remaining = dose x 0.5^(hours / half-life).",
"A bedtime earlier on the clock than the dose time is read as the next day."
],
"remainingAtBedtimeMg": 65.98,
"remainingMg": 50,
"source": "computed locally (first-order decay: dose x 0.5^(hours / half-life))",
"summary": "50 mg of 200 mg remains after 10 h (half-life 5 h); 15 h until below 25 mg. Below 25 mg at 5:00 AM (+1 day). At bedtime 10:00 PM (8 h later) about 66 mg remains.",
"thresholdMg": 25,
"verdict": "COMPUTED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"bedtime": {
"description": "Bedtime clock time; with doseTime gives the amount left at bedtime",
"type": "string"
},
"doseMg": {
"description": "Caffeine taken, in milligrams (1 to 2000)",
"type": "number"
},
"doseTime": {
"description": "Clock time of the dose, like 2:00 PM; adds clock times to the answer",
"type": "string"
},
"halfLifeHours": {
"description": "Half-life in hours, 0.5 to 24 (default 5; varies a lot between people)",
"type": "number"
},
"hoursElapsed": {
"description": "Hours since the dose, for the remaining amount (default 0)",
"type": "number"
},
"thresholdMg": {
"description": "Level to fall below, in mg (default 25)",
"type": "number"
}
},
"required": [
"doseMg"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"bedtimeClock": {
"type": [
"null",
"string"
]
},
"belowThresholdAt": {
"type": [
"null",
"string"
]
},
"belowThresholdDayOffset": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"doseMg": {
"type": [
"null",
"number"
]
},
"doseTimeClock": {
"type": [
"null",
"string"
]
},
"halfLifeHours": {
"type": [
"null",
"number"
]
},
"halfLifeTable": {
"items": {
"properties": {
"halfLives": {
"type": [
"null",
"number"
]
},
"hours": {
"type": [
"null",
"number"
]
},
"remainingMg": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"hoursElapsed": {
"type": [
"null",
"number"
]
},
"hoursFromDoseToBedtime": {
"type": [
"null",
"number"
]
},
"hoursUntilBelowThreshold": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"percentRemaining": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"remainingAtBedtimeMg": {
"type": [
"null",
"number"
]
},
"remainingMg": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"thresholdMg": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:06:07.06Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-02T04:06:06.832Z"
},
"resource": "https://focus-sleep-calc.x402tookit.com/caffeine-decay",
"serviceName": "Focus & Sleep Planner",
"tags": [
"caffeine",
"half-life",
"decay",
"coffee"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Caffeine remaining after hours, and the time until it drops below a threshold, from a half-life you can set (default 5 hours)."
}What the leaf hashes
{"body":"b225bf4873776d09e23be8877c6361c75a8fd31721d2a6d00f06745406077696","id":2201302,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646803243329,"prev":null,"subject":"x402_bazaar:https://focus-sleep-calc.x402tookit.com/caffeine-decay","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).
- 0x576783d7ed4f50edbdf322c65ceee5bc25b77cf451e229f2cad1c22a2cea57eb
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- 0x6fecc8bed680aaa540ee37c4b148e6f11b90e6e067303612940a353a64f884c4
- 0x87dff31f2c995d509190dc6965c0c877d8b77ff61d4d989179b5a3e6c943779f
- 0x871551ba3d0bef7d4d87544ea33a45fef9233ca133f304239d37f74b730ae488
- 0xa0269aca578380cc60207f520429ce9266c1f1454d9959d61caec881e91db49b
- 0x004f9a7cb504d17f2da2c85573b909dcadc2edeab0a68df68683d75cfcbeb565
- 0xc65cd462d807ca53e2babd271d0386fb42c42a7621e5982b4ba4cffff2b6729b
- 0x0f60c3cb81cc8c6f9c174ee80980c1b2812ec50b479351a0e4f2f4995084da5b
- 0x8d78c6f91f0a0c782b9c9f61136a2d39249651d60823d7dd99828d8f91c418ca
- 0x4156d0c5ab6447dc36720ca7ceb2f5a0f0c5620d9192ea6d8fcf5e704e8dda41
- 0xc73349c9955998a166e6e5920ac8ee0aa7bc6c9d66bace60f6dbd465dd9e0530
- 0x52242d46cadab5f421a6f86c1edc6379b085ae98482fa80904e4a3028c1849a3
- 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
- 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
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- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af