← The evidence ledger
Evidence row 69978
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.vextorium.com/v1/us-treasury-fx-rates
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a163b2b90dea1da2af296ed4a9f427119a8c3e12665d1b734ad231fa8841e880
- Leaf
- 0xdff18094722ac604242079201c9c6e16bb4cfa34dca3ca0fa410677c98539b17
What was observed
{
"endpoints": [
[
"x402",
"https://api.vextorium.com/v1/us-treasury-fx-rates"
]
],
"name": "US Treasury exchange rates",
"owner_address": "0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf",
"raw": {
"accepts": [
{
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"extra": {
"assets": [
{
"address": "0x0b2c639c533813f4aa9d7837caf62653d097ff85",
"authorizationVersions": [
"1",
"2"
],
"decimals": 6,
"symbol": "USDC"
}
],
"minValiditySeconds": 604800,
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:10",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
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{
"address": "0x3600000000000000000000000000000000000000",
"authorizationVersions": [
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"2"
],
"decimals": 6,
"symbol": "USDC"
}
],
"minValiditySeconds": 604800,
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:5042",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "0.003",
"asset": "524C555344000000000000000000000000000000",
"extra": {
"areFeesSponsored": false,
"invoiceId": "F7D6B20DBFD040999E200D4F507CE887",
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"scheme": "exact"
},
{
"amount": "2310",
"asset": "XRP",
"extra": {
"areFeesSponsored": false,
"invoiceId": "1669C30924AA48249760C35F6744F48B",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"scheme": "exact"
}
],
"description": "Official US Treasury reporting rates of exchange (quarterly) for about 170 currencies against the US dollar, including many the ECB does not publish (Argentine peso, naira, bolivar...), with history per country.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"country": "Argentina"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"country": "Argentina",
"currency": "Peso",
"historical": [
{
"date": "2026-06-30",
"units_per_usd": 1495
},
{
"date": "2026-03-31",
"units_per_usd": 1420
}
],
"last": {
"date": "2026-06-30",
"units_per_usd": 1495
},
"source": "U.S. Treasury, Treasury Reporting Rates of Exchange (public domain)"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"country": {
"description": "Country in English, e.g. Argentina (omit for all)",
"type": "string"
},
"currency": {
"description": "Currency name in English, e.g. Peso (optional)",
"type": "string"
}
},
"required": []
},
"bodyType": {
"enum": [
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"form-data",
"text"
],
"type": "string"
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"method": {
"enum": [
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"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
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"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"country": {
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"null"
]
},
"currency": {
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"string",
"null"
]
},
"historical": {
"items": {
"properties": {
"date": {
"type": [
"null",
"string"
]
},
"units_per_usd": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"type": [
"array",
"null"
]
},
"last": {
"properties": {
"date": {
"type": [
"string",
"null"
]
},
"units_per_usd": {
"type": [
"number",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"source": {
"type": [
"string",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"type": {
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}
},
"required": [
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],
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}
},
"required": [
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],
"type": "object"
}
}
},
"lastUpdated": "2026-10-21T04:02:07.756Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-21T04:02:07.501Z"
},
"resource": "https://api.vextorium.com/v1/us-treasury-fx-rates",
"serviceName": "US Treasury exchange rates",
"tags": [
"fx",
"exchange-rates",
"treasury",
"emerging-markets",
"usd"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Official US Treasury reporting rates of exchange (quarterly) for about 170 currencies against the US dollar, including many the ECB does not publish (Argentine peso, naira, bolivar...), with history per country."
}What the leaf hashes
{"body":"a163b2b90dea1da2af296ed4a9f427119a8c3e12665d1b734ad231fa8841e880","id":69978,"kind":"listing","method":"baseline/1","observed_us":1793025479265153,"prev":null,"subject":"x402_bazaar:https://api.vextorium.com/v1/us-treasury-fx-rates","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.