← The evidence ledger
Evidence row 2202149
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://calendar-systems.x402tookit.com/day-of-week
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- cdc030b645f03fcc53083d8938529cbe9a75285772a82d6d12756f80fc11b069
- Leaf
- 0x441d02adfffe669fe43811ead7482528732a2342f02d17b3c917ece1c5a87da3
What was observed
{
"endpoints": [
[
"x402",
"https://calendar-systems.x402tookit.com/day-of-week"
]
],
"name": "Calendar Systems",
"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": "Weekday of any date from year 1 to 9999 (Gregorian or Julian calendar) with day of year, quarter, ISO week and ISO week-date.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"date": "2026-10-11"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T08:54:32.594Z",
"calendar": "gregorian",
"date": "2026-10-11",
"dayOfYear": 284,
"daysInYear": 365,
"daysLeftInYear": 81,
"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.",
"gregorianDate": "2026-10-11",
"isoWeek": 41,
"isoWeekDate": "2026-W41-7",
"isoWeekYear": 2026,
"isoWeekdayNumber": 7,
"isoWeeksInThatYear": 53,
"julianCalendarDate": "2026-09-28",
"leapYear": false,
"monthName": "October",
"notChecked": [
"historical calendar adoption: pre-1582 Gregorian dates are proleptic and Julian-calendar weekdays are given only when you ask for calendar=julian",
"US/Sunday-first week numbering",
"…1 more"
],
"quarter": 4,
"reasons": [
"Weekday from the day count modulo 7.",
"ISO 8601: weeks start Monday; week 1 contains the year's first Thursday (the ISO week-year may differ from the calendar year near 1 January)."
],
"source": "Fixed-date arithmetic (Reingold and Dershowitz) and ISO 8601 week rules, computed locally",
"summary": "2026-10-11 (gregorian) is a Sunday: day 284 of 365, quarter 4, ISO week 2026-W41-7.",
"verdict": "COMPUTED",
"weekday": "Sunday"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"calendar": {
"description": "gregorian (default, proleptic) or julian",
"enum": [
"gregorian",
"julian"
],
"type": "string"
},
"date": {
"description": "YYYY-MM-DD, year 1 to 9999",
"type": "string"
},
"isoWeek": {
"description": "ISO week date like 2026-W01-4 to convert to a calendar date instead",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"calendar": {
"type": [
"null",
"string"
]
},
"date": {
"type": [
"null",
"string"
]
},
"dayOfYear": {
"type": [
"null",
"number"
]
},
"daysInYear": {
"type": [
"null",
"number"
]
},
"daysLeftInYear": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"gregorianDate": {
"type": [
"null",
"string"
]
},
"isoWeek": {
"type": [
"null",
"number"
]
},
"isoWeekDate": {
"type": [
"null",
"string"
]
},
"isoWeekYear": {
"type": [
"null",
"number"
]
},
"isoWeekdayNumber": {
"type": [
"null",
"number"
]
},
"isoWeeksInThatYear": {
"type": [
"null",
"number"
]
},
"julianCalendarDate": {
"type": [
"null",
"string"
]
},
"leapYear": {
"type": [
"boolean",
"null"
]
},
"monthName": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"quarter": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"weekday": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:40:13.774Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:40:13.521Z"
},
"resource": "https://calendar-systems.x402tookit.com/day-of-week",
"serviceName": "Calendar Systems",
"tags": [
"day-of-week",
"iso-week",
"calendar",
"dates"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Weekday of any date from year 1 to 9999 (Gregorian or Julian calendar) with day of year, quarter, ISO week and ISO week-date."
}What the leaf hashes
{"body":"cdc030b645f03fcc53083d8938529cbe9a75285772a82d6d12756f80fc11b069","id":2202149,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646813498798,"prev":null,"subject":"x402_bazaar:https://calendar-systems.x402tookit.com/day-of-week","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).
- 0x441cea80fc572eedeed5fb2882c112b87f743be6b9f147b9b15ea50e5002b148
- 0x5eb31c06f912debc495ea82e5034b3984940de25ad8b09a91aac73a8570313f8
- 0xa71ce739e18c8e4819061029fc6212d7af44ab80099bfd12b1291a6598b824d5
- 0x591a186bfd19fdbede58a2cd6aec15ba93264b9798e19044769b3fc3e835beab
- 0x4d9251bbc0853abcb710d9a973f6f9d4ba3ba78daa5190bea750aee577aa7a11
- 0x1f1490fb66ea459a0f0f71598f2534563f8f0ee7dd004d267e3e61545c80a722
- 0x7a50217e75c60cb4f3382ad9c0e3f22c5c66ee542480f47c86ebbfc9aa6831c1
- 0xabc96814bf7a458c01384e23cc45183e50f79f413bcb6b8c02b74f414b222498
- 0x27234dfde265d683cef40bf0863592777c1d0ecb6f1b0846c3e9c0a62b9570ea
- 0x5efab709f1eb925ca971331e911df7dc2c02022cfaac73f88d677d404089370f
- 0x32d8aa50bdb63c965d4627f30c8584b5b109ccd5950b3ed3d307ea75d46ed970
- 0xe92478cc3eab4cc4c9e8fd5dbc3001cb0971587042ed8624c5712d5ceb777263
- 0xd4651434698f4d5f8d2255b9d81f1cf47a7c3da7e2321b09b05fc8ddc31165a2
- 0x75634d9d67fe6c75f98d15ecdced550aaaa0b303b51c1355fcc39f82416bc504
- 0x3217f821997a6d778dcf0814a25b1296c55ab77710c675e7b15695d25a6ce67d
- 0x8760c227928c5295506cd8606e763f86cf8cd2a549820fab4dc86d29ca0d816d
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af