← The evidence ledger
Evidence row 17706
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://nbu.navistri.com/v1/rates/history
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- e0d4fb78c1e5eb7524325dcce5fce5ec2539d3e18db13d6add411b5594f7d715
- Leaf
- 0x55358de67dc28378f8295fadd1f9562f6a52974c97dae00c2a431807b5d700c9
What was observed
{
"endpoints": [
[
"x402",
"https://nbu.navistri.com/v1/rates/history"
]
],
"name": "NBU Data Ukraine",
"owner_address": "0x44e5ebeb366ab69a0a3c1c05080a01fe0d8013ef",
"raw": {
"accepts": [
{
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0x44e5eBeB366Ab69A0a3C1c05080a01FE0d8013ef",
"scheme": "exact"
}
],
"description": "Daily official NBU exchange-rate series of one currency against the hryvnia (UAH) for a period of up to 366 days, plus min, max and % change. Call it to chart or analyse UAH moves, compute averages for Ukrainian reporting, or check a rate across several dates in one paid call. Params: currency (default USD), from and to (YYYY-MM-DD; default the last 31 days).",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"currency": "EUR",
"from": "2026-09-01",
"to": "2026-09-30"
},
"type": "http"
},
"output": {
"example": {
"data": {
"base": "UAH",
"currency": "EUR",
"from": "2026-09-01",
"name": "Euro",
"points": [
{
"date": "2026-09-01",
"rate": 51.6369,
"ratePerUnit": 51.6369,
"units": 1
},
{
"date": "2026-09-02",
"rate": 51.5357,
"ratePerUnit": 51.5357,
"units": 1
},
{
"date": "2026-09-30",
"rate": 50.9278,
"ratePerUnit": 50.9278,
"units": 1
}
],
"stats": {
"change": -0.7091,
"changePct": -1.3732,
"count": 30,
"first": {
"date": "2026-09-01",
"rate": 51.6369,
"ratePerUnit": 51.6369,
"units": 1
},
"last": {
"date": "2026-09-30",
"rate": 50.9278,
"ratePerUnit": 50.9278,
"units": 1
},
"max": {
"date": "2026-09-10",
"ratePerUnit": 51.9905
},
"min": {
"date": "2026-09-30",
"ratePerUnit": 50.9278
}
},
"to": "2026-09-30"
},
"meta": {
"cached": false,
"endpoint": "GET /v1/rates/history",
"params": {
"currency": "EUR",
"from": "2026-09-01",
"to": "2026-09-30"
},
"retrievedAt": "2026-10-12T12:00:00.000Z",
"source": "National Bank of Ukraine open data (bank.gov.ua)",
"sourceUrl": "https://bank.gov.ua/ua/open-data/api-dev",
"terms": "Ukrainian public open data: free reuse including commercial use, with mandatory attribution to the source (Law of Ukraine 'On Access to Public Information', art. 10-1; https://bank.gov.ua/ua/open-data). Values are passed through unchanged. Not affiliated with or endorsed by the NBU.",
"upstreamUrl": "https://bank.gov.ua/..."
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"currency": {
"description": "ISO 4217 code. Default: USD.",
"pattern": "^[A-Za-z]{3}$",
"type": "string"
},
"from": {
"description": "First date, YYYY-MM-DD. Default: 30 days before `to`.",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"to": {
"description": "Last date, YYYY-MM-DD, at most 366 days after `from`. Default: today (Kyiv).",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"base": {
"const": "UAH"
},
"currency": {
"type": "string"
},
"from": {
"format": "date",
"type": "string"
},
"name": {
"type": [
"string",
"null"
]
},
"points": {
"items": {
"properties": {
"date": {
"format": "date",
"type": "string"
},
"rate": {
"type": "number"
},
"ratePerUnit": {
"type": "number"
},
"units": {
"type": "number"
}
},
"required": [
"date",
"rate",
"units",
"ratePerUnit"
],
"type": "object"
},
"type": "array"
},
"stats": {
"properties": {
"change": {
"type": "number"
},
"changePct": {
"type": "number"
},
"count": {
"type": "number"
},
"first": {
"properties": {
"date": {
"format": "date",
"type": "string"
},
"rate": {
"type": "number"
},
"ratePerUnit": {
"type": "number"
},
"units": {
"type": "number"
}
},
"required": [
"date",
"rate",
"units",
"ratePerUnit"
],
"type": "object"
},
"last": {
"properties": {
"date": {
"format": "date",
"type": "string"
},
"rate": {
"type": "number"
},
"ratePerUnit": {
"type": "number"
},
"units": {
"type": "number"
}
},
"required": [
"date",
"rate",
"units",
"ratePerUnit"
],
"type": "object"
},
"max": {
"properties": {
"date": {
"format": "date",
"type": "string"
},
"ratePerUnit": {
"type": "number"
}
},
"type": "object"
},
"min": {
"properties": {
"date": {
"format": "date",
"type": "string"
},
"ratePerUnit": {
"type": "number"
}
},
"type": "object"
}
},
"type": "object"
},
"to": {
"format": "date",
"type": "string"
}
},
"required": [
"currency",
"from",
"to",
"base",
"points",
"stats"
],
"type": "object"
},
"meta": {
"properties": {
"cached": {
"type": "boolean"
},
"endpoint": {
"type": "string"
},
"params": {
"type": "object"
},
"retrievedAt": {
"format": "date-time",
"type": "string"
},
"source": {
"type": "string"
},
"sourceUrl": {
"type": "string"
},
"terms": {
"type": "string"
},
"upstreamUrl": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-26T08:32:02.002Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-26T08:32:01.48Z"
},
"resource": "https://nbu.navistri.com/v1/rates/history",
"serviceName": "NBU Data Ukraine",
"tags": [
"data",
"finance",
"ukraine",
"exchange-rates",
"nbu"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Daily official NBU exchange-rate series of one currency against the hryvnia (UAH) for a period of up to 366 days, plus min, max and % change. Call it to chart or analyse UAH moves, compute averages for Ukrainian reporting, or check a rate across several dates in one paid call. Params: currency (default USD), from and to (YYYY-MM-DD; default the last 31 days)."
}What the leaf hashes
{"body":"e0d4fb78c1e5eb7524325dcce5fce5ec2539d3e18db13d6add411b5594f7d715","id":17706,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025327218460,"prev":null,"subject":"x402_bazaar:https://nbu.navistri.com/v1/rates/history","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.