← The evidence ledger
Evidence row 69808
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.vextorium.com/v1/ecb-rates-history
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- ce9bf71583d125b4cf5476450f1bf2288e212674d0358938b3515e633204c1d7
- Leaf
- 0x490d480cc1e9a814651e82407490dc6b653ccfea7274f34176710a78fabd0592
What was observed
{
"endpoints": [
[
"x402",
"https://api.vextorium.com/v1/ecb-rates-history"
]
],
"name": "Historical ECB rates | Vextorium",
"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": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
"scheme": "exact"
},
{
"amount": "0.003",
"asset": "524C555344000000000000000000000000000000",
"extra": {
"areFeesSponsored": false,
"invoiceId": "75E237CD98F34F9DB73120C168979132",
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"scheme": "exact"
},
{
"amount": "2310",
"asset": "XRP",
"extra": {
"areFeesSponsored": false,
"invoiceId": "3A4233A93DD04812B8029254AB87F59F",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"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": {
"assets": [
{
"address": "0x3600000000000000000000000000000000000000",
"authorizationVersions": [
"1",
"2"
],
"decimals": 6,
"symbol": "USDC"
},
{
"address": "0x171a4217b86a807a64eb94757db6849fb4bdbaa0",
"authorizationVersions": [
"2"
],
"decimals": 8,
"symbol": "cirBTC"
},
{
"address": "0xbef5f6d51cb62b58e6a8f77868681825c6fe21c1",
"authorizationVersions": [
"2"
],
"decimals": 6,
"symbol": "EURC"
}
],
"minValiditySeconds": 604800,
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:5042",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
}
],
"description": "Historical ECB euro reference exchange rate for any date since 1999 and conversion between any two published currencies.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"amount": 100,
"date": "2024-06-14",
"from": "EUR",
"to": "USD"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"amount": 100,
"from": "EUR",
"note": "If the date is a holiday or weekend, the last previous published day is used.",
"rate": 1.0686,
"reference_date": "2024-06-14",
"requested_date": "2024-06-14",
"result": 106.86,
"source": "European Central Bank - euro reference exchange rates",
"to": "USD"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"amount": {
"description": "Amount to convert (default 1)",
"type": "number"
},
"date": {
"description": "Date YYYY-MM-DD",
"type": "string"
},
"from": {
"description": "Source currency (default EUR)",
"type": "string"
},
"to": {
"description": "Target currency (default USD)",
"type": "string"
}
},
"required": [
"date"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"a": {
"type": [
"string",
"null"
]
},
"amount": {
"type": [
"number",
"null"
]
},
"from": {
"type": [
"string",
"null"
]
},
"note": {
"type": [
"string",
"null"
]
},
"reference_date": {
"type": [
"string",
"null"
]
},
"requested_date": {
"type": [
"string",
"null"
]
},
"result": {
"type": [
"number",
"null"
]
},
"source": {
"type": [
"string",
"null"
]
},
"type": {
"type": [
"number",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-23T06:53:24.415Z",
"quality": {
"l30DaysTotalCalls": 14,
"l30DaysUniquePayers": 10,
"lastCalledAt": "2026-10-23T06:53:23.922Z"
},
"resource": "https://api.vextorium.com/v1/ecb-rates-history",
"serviceName": "Historical ECB rates | Vextorium",
"tags": [
"forex",
"ecb",
"historical",
"exchange-rates",
"eur"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Historical ECB euro reference exchange rate for any date since 1999 and conversion between any two published currencies."
}What the leaf hashes
{"body":"ce9bf71583d125b4cf5476450f1bf2288e212674d0358938b3515e633204c1d7","id":69808,"kind":"listing","method":"baseline/1","observed_us":1793025478980255,"prev":null,"subject":"x402_bazaar:https://api.vextorium.com/v1/ecb-rates-history","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).
- 0x490d6d8019bee04fa8dc1fc7d9a8e77f32b5df9b1b6ae8fc1399a0e140e49208
- 0x9774b93f58fff4612269d88993113dfd7e432ba39cdd50b90bcbbbf2d388a745
- 0x280ed773f00bfe63a23b61539b843ae0d00c1b1183b6bf152f71d728269878fd
- 0xbdfd4710f8962001184728e662fb2c1519ad61fad652914a9d3fdd23a20e9597
- 0xf0791dde16d33342dba9aef77534fd164f86ae9ddc1b3963add2740265cf02da
- 0xc62ab0f33817f8ae08fafbfc5cf5afd6658841b4c7e063573c9672f8dea47243
- 0x6f11d3c5918966283d0ee932594d3298f7e375886ebbffc6119c7463f31eed2f
- 0x570d2320bb282dd0da0faa25cbf84612d9e3083b12ba8304ea4903d57a9705e1
- 0x7541cd1918e38f4a0f6add627a7846433315f4898be3452c4fe4e6121a5b9747
- 0x1c31b9fd609755e3d960fab27bd2b1eb3a2104f15e3f9261a56d30e3613f4c01
- 0xa40c09a143bc388ccac821ec3854902941c513470a57a806c98060a6d63aedf9
- 0xee7d5711cd2515f4b08f3e4041d3d56304f9db6bffd82d82746f0f4ea43b8f26
- 0xb86fa861d04737cb507e721eefbb066d26528fdb6017b1145c18d1223b93ee21
- 0x88e326a39b26e2c125306c9d3805d14398ace088bba9a2a0aa376b811cfb201a
- 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
- 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae