← The evidence ledger
Evidence row 19245
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agentsvc.io/api/v1/proxy/exchange-rates
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 8047a62c22193bf9a43dd75898bc463605e7acfe9d050e39073df5dfb163009b
- Leaf
- 0x191f7b51e3123d5fd8b61a0083f2cbc1a868c1791796e5c2eafd8c9744ec6466
What was observed
{
"endpoints": [
[
"x402",
"https://agentsvc.io/api/v1/proxy/exchange-rates"
]
],
"name": "Currency Exchange Rates",
"owner_address": "0x622efa6ceb83a5b6edbc931332f4db68b7f74f27",
"raw": {
"accepts": [
{
"amount": "4500",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
"scheme": "exact"
},
{
"amount": "4500",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg",
"scheme": "exact"
},
{
"amount": "4500",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
"scheme": "exact"
},
{
"amount": "4500",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
"scheme": "exact"
}
],
"description": "Currency exchange rates (forex): official ECB reference rates for about 30 currencies (USD, GBP, CHF, JPY, CNY, ...), published every working day around 16:00 CET, cross rates for any base among them. Returns rates object mapping currency codes to rates relative to base. Pass symbols array to filter (e.g. ['USD','CHF','GBP']). Empty symbols = all supported currencies. Use for currency conversion in invoices, pricing, or financial calculations.",
"extensions": {
"bazaar": {
"category": "finance",
"info": {
"input": {
"body": {
"base": "EUR",
"symbols": [
"USD",
"CHF",
"GBP"
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"data": {
"base": "EUR",
"date": "2026-04-07",
"rates": {
"CHF": 0.9242,
"GBP": 0.8594,
"JPY": 161.32,
"USD": 1.0892
},
"source": "European Central Bank via frankfurter.dev"
},
"success": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"base": {
"default": "EUR",
"description": "Base currency (e.g. USD, EUR, GBP)",
"type": "string"
},
"symbols": {
"description": "Target currencies to return. Empty = all.",
"items": {
"type": "string"
},
"type": "array"
}
},
"required": []
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"base": {
"description": "Base currency code (e.g. EUR)",
"type": "string"
},
"date": {
"description": "Date of the exchange rates",
"format": "date",
"type": "string"
},
"rates": {
"additionalProperties": {
"type": "number"
},
"description": "Map of currency code → exchange rate relative to base",
"type": "object"
},
"source": {
"description": "Data source attribution. Always: 'European Central Bank via frankfurter.dev'",
"type": "string"
}
},
"required": [
"base",
"date",
"rates",
"source"
],
"type": "object"
},
"success": {
"type": "boolean"
}
},
"required": [
"success",
"data"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"exchange-rates",
"fx",
"currency-conversion",
"forex",
"finance",
"currency",
"exchange",
"ecb"
]
},
"builder-code": {
"info": {
"a": "bc_q6wi3opd"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791462963/bazaar-icons/243ff0b79dbee242.png",
"lastUpdated": "2026-10-26T04:02:07.847Z",
"quality": {
"l30DaysTotalCalls": 17,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-26T04:02:07.369Z"
},
"resource": "https://agentsvc.io/api/v1/proxy/exchange-rates",
"serviceName": "Currency Exchange Rates",
"tags": [
"exchange-rates",
"fx",
"currency-conversion",
"forex",
"finance"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Currency exchange rates (forex): official ECB reference rates for about 30 currencies (USD, GBP, CHF, JPY, CNY, ...), published every working day around 16:00 CET, cross rates for any base among them. Returns rates object mapping currency codes to rates relative to base. Pass symbols array to filter (e.g. ['USD','CHF','GBP']). Empty symbols = all supported currencies. Use for currency conversion in invoices, pricing, or financial calculations."
}What the leaf hashes
{"body":"8047a62c22193bf9a43dd75898bc463605e7acfe9d050e39073df5dfb163009b","id":19245,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025331284230,"prev":null,"subject":"x402_bazaar:https://agentsvc.io/api/v1/proxy/exchange-rates","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).
- 0x191f890385ae616297386d561cdf76e134f80d47041bfdd6ea5008f9bf9630c7
- 0x6cfdc304fe7839611f49b6af5f4cff393e4a60711c362344ba1e9f1ef4557a15
- 0x1ec4000ca9a2a13db597a60dfeadd97e46062bb440ed8abf866b5de72b71bf3e
- 0x1567942846ddea6271fd04c6680335c3297cc70b7b882ac3d61ba2ca56139850
- 0x846c526f5984ceb2cdf06a4f2f2f4e1d38329c92e9535f5298d0663b04bab4cc
- 0x9eb39a317dcb24a9fec9dae638939f2957b0c51ef17636f67fbeadcd39d2e4d8
- 0x08ce21d47d0b8fa2e5e269e2454a85472ba5d0bf1f18fa9cbd122b76699b66eb
- 0xed885f377c16339db2936d039f2acf8720060c23d4a17be3cdaabe4c98a88ce9
- 0x50566d6198ca8c3af7617938ce8dd24b33dd4d078ae3044e0096ee9b02583a12
- 0x22a40154924d75fee76be762401605048bce3556b7a3714fb3a594b3875c3a06
- 0x0ebd017eb4cb5f6f3c01ae6562748898aa3fb42b150504be21c4050acea38366
- 0x6a8a72430804a14ec575375f3d0ca4364f58310afb2c2e8c92b72f8b75809db9
- 0xe00c7829e46541e49a308807d357db902e06eff941a833217a8f0dbccd3964f1
- 0x770e4376196188c7fc9ec40f8e218dc0d1cb92bba5fe0425a0edce27ca9a997f
- 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae