← The evidence ledger
Evidence row 69836
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.vextorium.com/v1/eur-fx-history
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 707c8ddfb5dadfce543255b7ce390fe6b645a88564fe611539be2db894a90159
- Leaf
- 0x905ef0847dbc9772fd409ba9b1e34ece1ac7fddf3f5d799c15e4ad8e792f6a69
What was observed
{
"endpoints": [
[
"x402",
"https://api.vextorium.com/v1/eur-fx-history"
]
],
"name": "EUR exchange rate history",
"owner_address": "0xb9f06d2734b7e9d7b21b64c4d8b95bd774b71acf",
"raw": {
"accepts": [
{
"amount": "4000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "4000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
"scheme": "exact"
},
{
"amount": "4000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "4000",
"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": "4000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"assets": [
{
"address": "0x3600000000000000000000000000000000000000",
"authorizationVersions": [
"1",
"2"
],
"decimals": 6,
"symbol": "USDC"
}
],
"minValiditySeconds": 604800,
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:5042",
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"scheme": "exact"
},
{
"amount": "0.004",
"asset": "524C555344000000000000000000000000000000",
"extra": {
"areFeesSponsored": false,
"invoiceId": "369B900066DC44AAAC34914BD8FDEB93",
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"scheme": "exact"
},
{
"amount": "3080",
"asset": "XRP",
"extra": {
"areFeesSponsored": false,
"invoiceId": "0AF49FAC4F234CE8A95F5A69B65774E3",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"scheme": "exact"
}
],
"description": "Daily ECB reference exchange rate of a currency against the euro for up to 5 years: latest, change, high, low, average and annualized volatility, with the series.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"currency": "USD",
"days": 30
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"annual_volatility_pct": 4.37,
"avg": 1.1488,
"change_pct": -3.049,
"date": "2026-10-02",
"max": 1.1652,
"min": 1.1225,
"pair": "EUR/USD",
"series": [
{
"date": "2026-09-02",
"value": 1.1578
},
{
"date": "2026-09-03",
"value": 1.1615
}
],
"since": "2026-09-02",
"source": "European Central Bank, reference exchange rates",
"units_per_eur": 1.1225
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"currency": {
"description": "ISO code, e.g. USD, GBP, JPY",
"type": "string"
},
"days": {
"description": "5-1825, default 90",
"type": "integer"
}
},
"required": []
},
"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": {
"annual_volatility_pct": {
"type": [
"number",
"null"
]
},
"avg": {
"type": [
"number",
"null"
]
},
"change_pct": {
"type": [
"number",
"null"
]
},
"date": {
"type": [
"string",
"null"
]
},
"max": {
"type": [
"number",
"null"
]
},
"min": {
"type": [
"number",
"null"
]
},
"pair": {
"type": [
"string",
"null"
]
},
"series": {
"items": {
"properties": {
"date": {
"type": [
"null",
"string"
]
},
"value": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"type": [
"array",
"null"
]
},
"since": {
"type": [
"string",
"null"
]
},
"source": {
"type": [
"string",
"null"
]
},
"units_per_eur": {
"type": [
"number",
"null"
]
}
},
"type": [
"object",
"null"
]
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-20T21:21:49.484Z",
"quality": {
"l30DaysTotalCalls": 9,
"l30DaysUniquePayers": 7,
"lastCalledAt": "2026-10-20T21:21:49.219Z"
},
"resource": "https://api.vextorium.com/v1/eur-fx-history",
"serviceName": "EUR exchange rate history",
"tags": [
"fx",
"ecb",
"euro",
"history",
"volatility"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Daily ECB reference exchange rate of a currency against the euro for up to 5 years: latest, change, high, low, average and annualized volatility, with the series."
}What the leaf hashes
{"body":"707c8ddfb5dadfce543255b7ce390fe6b645a88564fe611539be2db894a90159","id":69836,"kind":"listing","method":"baseline/1","observed_us":1793025479026688,"prev":null,"subject":"x402_bazaar:https://api.vextorium.com/v1/eur-fx-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).
- 0x905e4e9ea1228dde66a41b1518edaa548fb226660bde23a8dc412636f6909aa7
- 0x4d91f7d62c12ca4f68e59308ef35eef6ca1df580d9c9931e67298d25991e02d2
- 0xd4ac686d6b9d12716ff175f5bb4b43d802c685bff0c072806ce0c291e8220cdf
- 0x3c7b960bec3c150050852ad741bb271133f7f8d6ae2e6df9b61439c755e425fd
- 0x7b0f38ad9803be88d329687316d8ef7dd6ea6194812955522da6211c45f1c732
- 0xbc0ac2a220862edd5abb2641ffd4628679515b1c1baec7c5c5e9552a58e83f17
- 0x47208d273dce880249686b671023e30dcd98e64f592f53890049a9787ed74262
- 0x58de9b6833758e57469c9a5ff896a04ea3f44f5b285de4212ed47930bc56d276
- 0x957ebc7023975d8dcec4401284c254f8b3fe230b729fef0aaf533a85e7cfd531
- 0xaceb83c372739bd98e77173713a458afd2092803e86ac0b8b2afe3eb94ca90c0
- 0xc41c5ee73cf254bf3fe8e9a8475b0931c3223f7331f30010bc3a5e2a753329d6
- 0x4634efb8094d1dd2874013b832ad8653e49400f57bf98efdcc5f925ed08d0f5b
- 0xc0cb184c9bdf71abcf18fda97bd59289153d120dbf8fee9f517b63bf303deb95
- 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
- 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae