← The evidence ledger
Evidence row 66102
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.duoleads.com/v1/time/rrule
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 7e4d52c434b216b302d65d0179f7d2abece92f8ced5fff7a7b55b5335e235442
- Leaf
- 0xac0ddebfc2d57e6eba89f491914b7b6a9f4424578418b34587196d2b8e433aa0
What was observed
{
"endpoints": [
[
"x402",
"https://api.duoleads.com/v1/time/rrule"
]
],
"name": "Duo Data Utilities",
"owner_address": "0xcd673f7e1dad254347aeab6be0defe8b9c6b3a39",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39",
"scheme": "exact"
}
],
"description": "Expand an RFC 5545 recurrence rule into concrete occurrence timestamps. Accepts an RRULE string with DTSTART, an IANA time zone, and optional EXDATE and RDATE lists, and returns up to 200 occurrences as both local wall-clock times and UTC instants. Supports FREQ, INTERVAL, COUNT, UNTIL, BYDAY, BYMONTHDAY, BYMONTH, BYSETPOS and WKST. Occurrences moved by a DST gap carry gap: true. Rules needing over 50,000 candidate evaluations are rejected.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"dtstart": "2026-01-01T09:00:00",
"rrule": "FREQ=MONTHLY;BYDAY=-1FR;COUNT=3",
"zone": "Europe/Amsterdam"
},
"type": "http"
},
"output": {
"example": {
"data": {
"count": 3,
"occurrences": [
{
"dst": false,
"epoch_ms": 1769760000000,
"instant": "2026-01-30T08:00:00.000Z",
"local": "2026-01-30T09:00:00",
"offset": "+01:00"
},
{
"dst": false,
"epoch_ms": 1772179200000,
"instant": "2026-02-27T08:00:00.000Z",
"local": "2026-02-27T09:00:00",
"offset": "+01:00"
},
{
"dst": false,
"epoch_ms": 1774598400000,
"instant": "2026-03-27T08:00:00.000Z",
"local": "2026-03-27T09:00:00",
"offset": "+01:00"
}
],
"rule": {
"byday": [
"-1FR"
],
"count": 3,
"freq": "MONTHLY",
"interval": 1,
"wkst": "MO"
},
"truncated": false,
"zone": "Europe/Amsterdam"
},
"meta": {
"computed_at": "2026-09-28T12:00:00.000Z",
"deterministic": true,
"disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
"price_usd": "0.05",
"request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D"
},
"ok": true,
"route": "/v1/time/rrule",
"version": "1.0.0"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"after": {
"description": "RFC 3339 instant; skip occurrences before it.",
"maxLength": 64,
"type": "string"
},
"count": {
"default": "20",
"description": "Maximum occurrences to return, 1-200. Default 20.",
"maxLength": 64,
"pattern": "^[+-]?\\d+$",
"type": "string"
},
"dtstart": {
"description": "First occurrence, YYYY-MM-DDTHH:MM:SS local to zone.",
"maxLength": 32,
"type": "string"
},
"exdate": {
"description": "Comma-separated local datetimes to exclude.",
"maxLength": 1024,
"type": "string"
},
"rdate": {
"description": "Comma-separated local datetimes to add.",
"maxLength": 1024,
"type": "string"
},
"rrule": {
"description": "RFC 5545 RRULE, e.g. FREQ=MONTHLY;BYDAY=-1FR;COUNT=6.",
"maxLength": 512,
"type": "string"
},
"zone": {
"description": "IANA time zone id.",
"maxLength": 64,
"type": "string"
}
},
"required": [
"rrule",
"dtstart",
"zone"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"count": {
"type": "integer"
},
"occurrences": {
"items": {
"properties": {
"dst": {
"type": "boolean"
},
"epoch_ms": {
"type": "integer"
},
"gap": {
"type": "boolean"
},
"instant": {
"type": "string"
},
"local": {
"type": "string"
},
"offset": {
"type": "string"
}
},
"required": [
"local",
"instant",
"epoch_ms",
"offset",
"dst"
],
"type": "object"
},
"type": "array"
},
"rule": {
"properties": {
"byday": {
"items": {
"type": "string"
},
"type": "array"
},
"byhour": {
"items": {
"type": "integer"
},
"type": "array"
},
"byminute": {
"items": {
"type": "integer"
},
"type": "array"
},
"bymonth": {
"items": {
"type": "integer"
},
"type": "array"
},
"bymonthday": {
"items": {
"type": "integer"
},
"type": "array"
},
"bysecond": {
"items": {
"type": "integer"
},
"type": "array"
},
"bysetpos": {
"items": {
"type": "integer"
},
"type": "array"
},
"count": {
"type": "integer"
},
"freq": {
"type": "string"
},
"interval": {
"type": "integer"
},
"until": {
"type": "string"
},
"wkst": {
"type": "string"
}
},
"required": [
"freq",
"interval",
"wkst"
],
"type": "object"
},
"truncated": {
"type": "boolean"
},
"zone": {
"type": "string"
}
},
"required": [
"occurrences",
"count",
"truncated",
"rule",
"zone"
],
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/time/rrule"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-01T20:51:19.698Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-01T20:51:19.567Z"
},
"resource": "https://api.duoleads.com/v1/time/rrule",
"serviceName": "Duo Data Utilities",
"tags": [
"deterministic",
"no-api-key",
"time",
"calendar",
"recurrence"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Expand an RFC 5545 recurrence rule into concrete occurrence timestamps. Accepts an RRULE string with DTSTART, an IANA time zone, and optional EXDATE and RDATE lists, and returns up to 200 occurrences as both local wall-clock times and UTC instants. Supports FREQ, INTERVAL, COUNT, UNTIL, BYDAY, BYMONTHDAY, BYMONTH, BYSETPOS and WKST. Occurrences moved by a DST gap carry gap: true. Rules needing over 50,000 candidate evaluations are rejected."
}What the leaf hashes
{"body":"7e4d52c434b216b302d65d0179f7d2abece92f8ced5fff7a7b55b5335e235442","id":66102,"kind":"listing","method":"baseline/1","observed_us":1793025459702748,"prev":null,"subject":"x402_bazaar:https://api.duoleads.com/v1/time/rrule","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).
- 0xac0d99c5bed629569227dc90875a5c8c7c1dbabedab08c238963f573723fdb1e
- 0x5fb79bbf9c017ab042ac9ba50b7fa2164cdf4e953acfc5a83af304e21a76e630
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- 0x18a6b71572e5ab3d210821166f819afec751467187550c15cc9ec09205377fec
- 0xb9bdca0e680856b6b1298cdc97674c4b98b38383ef4e17ff665f3e7b77ee847c
- 0xc505e1a18dfeed7bf7b9170769722e84af0e1d2a30e66a526f27566b4a68bc36
- 0x5a9d93718b5d3a59c2383a416b816595950be9194c69405e8ce20bbf93b65723
- 0x3e7931c87b144009504d5c547356339f3b9e6ce9ea8bf90073e6c509266b8e7d
- 0x82e794d16013758d7090a0358a9d19fdd1330fa049313a95f462838aa26f6eb8
- 0xc7cacc2d01c3e1b7ffb7608f2b307b4082bdded2ad2fc7c4373e088c0cadb4c9
- 0xe285855b14529e4bf6d93d3ce05a3365dcfc651d48b9dfeb5c229a51822613eb
- 0xb7fae69bb7bd717d54a83df961404a3e4de2a5cfbcfa013fd83a38627fe13f7e
- 0x4700d6dfdb40e52e2ceb8ffe62c75f3f708d23452f828255fd003d795f5d9d66
- 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
- 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
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- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae