← The evidence ledger
Evidence row 17688
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://nbu.navistri.com/v1/key-rate
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- c50acef0c55298cecd631973c6b15f43f7e13fe15fc05bc6b1dd28bbdef2c1ae
- Leaf
- 0xf4f5eb3526a13a1276781dbcb4af0f573e97aef5c1088eaec1f2d01401f4a0aa
What was observed
{
"endpoints": [
[
"x402",
"https://nbu.navistri.com/v1/key-rate"
]
],
"name": "NBU Data Ukraine",
"owner_address": "0x44e5ebeb366ab69a0a3c1c05080a01fe0d8013ef",
"raw": {
"accepts": [
{
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0x44e5eBeB366Ab69A0a3C1c05080a01FE0d8013ef",
"scheme": "exact"
}
],
"description": "National Bank of Ukraine key policy rate (облікова ставка) on a date, with the overnight deposit and overnight loan rates and every policy-rate change in the previous ~13 months. Call it for Ukrainian loan or deposit maths, late-payment penalties tied to the NBU rate, macro briefs, or to see when the rate last moved. Param: date (YYYY-MM-DD, default today in Kyiv).",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"date": "2026-10-12"
},
"type": "http"
},
"output": {
"example": {
"data": {
"asOf": "2026-10-12",
"date": "2026-10-12",
"lookbackFrom": "2025-09-07",
"overnightDepositRatePct": 16,
"overnightLoanRatePct": 20,
"policyRateChanges": [
{
"effectiveFrom": "2026-09-18",
"previousRatePct": 15.5,
"ratePct": 16
},
{
"effectiveFrom": "2026-07-31",
"previousRatePct": 15,
"ratePct": 15.5
},
{
"effectiveFrom": "2026-01-30",
"previousRatePct": 15.5,
"ratePct": 15
}
],
"policyRateEffectiveFrom": "2026-09-18",
"policyRatePct": 16
},
"meta": {
"cached": false,
"endpoint": "GET /v1/key-rate",
"params": {
"date": "2026-10-12"
},
"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": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"date": {
"description": "Date, YYYY-MM-DD, from 1992-06-25. Default: today (Kyiv).",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"asOf": {
"format": "date",
"type": "string"
},
"date": {
"format": "date",
"type": "string"
},
"lookbackFrom": {
"format": "date",
"type": "string"
},
"overnightDepositRatePct": {
"type": [
"number",
"null"
]
},
"overnightLoanRatePct": {
"type": [
"number",
"null"
]
},
"policyRateChanges": {
"items": {
"properties": {
"effectiveFrom": {
"format": "date",
"type": "string"
},
"previousRatePct": {
"type": "number"
},
"ratePct": {
"type": "number"
}
},
"type": "object"
},
"type": "array"
},
"policyRateEffectiveFrom": {
"type": [
"string",
"null"
]
},
"policyRatePct": {
"type": "number"
}
},
"required": [
"date",
"asOf",
"policyRatePct",
"policyRateChanges"
],
"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": "2026-10-26T08:41:32.002Z",
"quality": {
"l30DaysTotalCalls": 8,
"l30DaysUniquePayers": 7,
"lastCalledAt": "2026-10-26T08:41:31.708Z"
},
"resource": "https://nbu.navistri.com/v1/key-rate",
"serviceName": "NBU Data Ukraine",
"tags": [
"data",
"finance",
"ukraine",
"interest-rates",
"nbu"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "National Bank of Ukraine key policy rate (облікова ставка) on a date, with the overnight deposit and overnight loan rates and every policy-rate change in the previous ~13 months. Call it for Ukrainian loan or deposit maths, late-payment penalties tied to the NBU rate, macro briefs, or to see when the rate last moved. Param: date (YYYY-MM-DD, default today in Kyiv)."
}What the leaf hashes
{"body":"c50acef0c55298cecd631973c6b15f43f7e13fe15fc05bc6b1dd28bbdef2c1ae","id":17688,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025327186000,"prev":null,"subject":"x402_bazaar:https://nbu.navistri.com/v1/key-rate","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).
- 0xf4f5bef3d2a4de07e0351484d0b6626e60237ed751dac9418b415ad7c31f0f4e
- 0x3d0ffc7a17efecd0ccc8ecf38d381767e66ae3c0eefe0f2d795f4516dddae24a
- 0x71ebc921d8993da51f5aa96988a80e4b990061273e4823f02bd9aff54ae1ef2d
- 0xc4feea632ade51c1493345c68ece13745b73fac3f71af93c58835a6fc7a6f379
- 0x0c334b90bea31c0cdec9e20c918f9b2a40be13310afa880392be5c691b8bbbdc
- 0xb285870eb0d25fe86ebac045874164c6cfc7c2ada0d6b1c707f8764512467e20
- 0x55807cc7892378eb60d1c5fbead1d12b98821ebec4dc2d32c46a9856573273b5
- 0xbc0314a37f2a16198562db05095c35498ca093ad7c24163023b82605ef070aa6
- 0x60cc54c8c7fef3a86f858bd19cfe0791e7d127c201e2901a94201e2db3b00c33
- 0xf7bdc34efb83dc5cbbcb5071558fe87a477728e005b9d180c492e090371b2357
- 0xd1f6cbd0d3ee44ebe2e23b42e7f1822bbdf0afd342375323b5d4f8bc89cd943a
- 0x86ae35463d854f3938d986999aa8497e14f0ba2aa6f39a269e1e6d1134f9b847
- 0x79695e4356ea25a2b58265a824698704cd2c743099ce2dca9e41384ce8f1a8c5
- 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
- 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
- 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae