← The evidence ledger
Evidence row 61754
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agent402.tools/api/exchange-rates
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f51ae2148ea9068f8b7342a59cf1252e97cb58537e7c8a13aea8fa8015fe87de
- Leaf
- 0x59304cb76dad58a7071c5e2696dfb15b953fa220d89949b1dfe7eb6bc8fa1728
What was observed
{
"endpoints": [
[
"x402",
"https://agent402.tools/api/exchange-rates"
]
],
"name": "BTC exchange rates",
"owner_address": "0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0",
"raw": {
"accepts": [
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"outputSchema": {
"properties": {
"base": {
"type": "string"
},
"cached": {
"type": "boolean"
},
"count": {
"type": "integer"
},
"fetchedAt": {
"type": "string"
},
"rates": {
"items": {
"properties": {
"code": {
"type": "string"
},
"name": {
"type": "string"
},
"perBtc": {
"type": "number"
},
"type": {
"type": "string"
},
"unit": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"source": {
"type": "string"
}
},
"required": [
"source",
"fetchedAt",
"cached",
"base",
"count",
"rates"
],
"type": "object"
},
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:143",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:43114",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:1329",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "6000",
"asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:10",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"extra": {
"name": "Global Dollar",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:4663",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42220",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "permit2",
"facilitatorAddress": "0x14fDa13953Fc30428938E6BF950d036e77214e52",
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
"scheme": "upto"
},
{
"amount": "5000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "J7aN3PLJnTCF5qpEnvJHJsnCjcGuqC2rYtEM8Gv3xwg",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "CCW67TSZV3SSS2HXMBQ5JFGCKJNXKZM7UQUWUZPUTHXSTZLEO7SJMI75",
"extra": {
"areFeesSponsored": true
},
"maxTimeoutSeconds": 300,
"network": "stellar:pubnet",
"payTo": "GDNJXCKW7ZM7GEEVP674TWPU26YJNBQ2FI4ZIPRKTPTNUEJMDHFJWWRL",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
"tag": "x402-global-challenge"
},
"maxTimeoutSeconds": 300,
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"payTo": "C7IIHG7SPLPZ5H7ZT6HW3UV2OQMQQE6Y2HBNGZXSLRJULE42BEE2OY2XIE",
"scheme": "exact"
}
],
"description": "BTC-denominated exchange rates for ~60 units: crypto (ETH, LTC, BNB, SOL, ...), fiat (USD, EUR, JPY, ...) and commodities (gold, silver ounces), each as units per 1 BTC with name and type. Optional `currencies` filter (comma-separated unit codes) and `type` filter (crypto, fiat, commodity). One call gives a consistent cross-rate table: BTC in gold ounces, ETH/BTC, USD/JPY via BTC. Cached in-process for 60 seconds. Data provided by CoinGecko.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"currencies": "usd,eur,eth,xau"
},
"type": "http"
},
"output": {
"example": {
"base": "BTC",
"cached": false,
"count": 4,
"fetchedAt": "2026-08-22T13:20:00.000Z",
"rates": [
{
"code": "usd",
"name": "US Dollar",
"perBtc": 77018,
"type": "fiat",
"unit": "$"
},
{
"code": "eur",
"name": "Euro",
"perBtc": 65600.2,
"type": "fiat",
"unit": "€"
},
{
"code": "eth",
"name": "Ether",
"perBtc": 31.813,
"type": "crypto",
"unit": "ETH"
},
{
"code": "xau",
"name": "Gold - Troy Ounce",
"perBtc": 22.91,
"type": "commodity",
"unit": "XAU"
}
],
"source": "coingecko"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"currencies": {
"description": "Optional comma-separated unit codes to keep (usd, eur, eth, xau, ...). Default: all.",
"type": "string"
},
"type": {
"description": "Optional filter: crypto, fiat or commodity.",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"base": {
"type": "string"
},
"cached": {
"type": "boolean"
},
"count": {
"type": "integer"
},
"fetchedAt": {
"type": "string"
},
"rates": {
"items": {
"properties": {
"code": {
"type": "string"
},
"name": {
"type": "string"
},
"perBtc": {
"type": "number"
},
"type": {
"type": "string"
},
"unit": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"source": {
"type": "string"
}
},
"required": [
"source",
"fetchedAt",
"cached",
"base",
"count",
"rates"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_b4aw4uzd"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"id": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[a-zA-Z0-9_-]+$",
"type": "string"
},
"required": {
"type": "boolean"
}
},
"required": [
"required"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1787497819/bazaar-icons/478aced8e219894c.png",
"lastUpdated": "2026-10-20T01:53:24.813Z",
"quality": {
"l30DaysTotalCalls": 8,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-20T01:53:24.633Z"
},
"resource": "https://agent402.tools/api/exchange-rates",
"serviceName": "BTC exchange rates",
"tags": [
"crypto",
"exchange-rates",
"btc",
"fiat",
"gold"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "BTC-denominated exchange rates for ~60 units: crypto (ETH, LTC, BNB, SOL, ...), fiat (USD, EUR, JPY, ...) and commodities (gold, silver ounces), each as units per 1 BTC with name and type. Optional `currencies` filter (comma-separated unit codes) and `type` filter (crypto, fiat, commodity). One call gives a consistent cross-rate table: BTC in gold ounces, ETH/BTC, USD/JPY via BTC. Cached in-process for 60 seconds. Data provided by CoinGecko."
}What the leaf hashes
{"body":"f51ae2148ea9068f8b7342a59cf1252e97cb58537e7c8a13aea8fa8015fe87de","id":61754,"kind":"listing","method":"baseline/1","observed_us":1793025451489269,"prev":null,"subject":"x402_bazaar:https://agent402.tools/api/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).
- 0x5930a74421d384104ba9b7fc530b9f42dbdbc53bb704f11e1e41c9ea1936f6b0
- 0x9988fca9ee6ffb4216cd0754fe2e2c35f7a554d9faf56b2a8c0604ec98b9db12
- 0x118f51e515ae50035fe143c08e0e258717c7233fe7ce39a6301ed8f49150717d
- 0xc186a46b1d09637b4e110e05c0deb9ae74e35b7c9b4a120627fa94dfe98d5d20
- 0x3e774875317c0938265626a109228ef61861d07375f7984a6176788138e4f7ce
- 0x5a6e2370af83600f59f613b3f22452f3ad7aa97bf44220f96ce6d23e594c83b8
- 0x49583dc30a60716d7e176937ebee91342a2ce250fde72def5e424748d585b681
- 0xf87a7ec64783cfb91dd7204aab49f00f0b7add530c66c442337a9431d3e2e337
- 0xd446fb8a293ef659909ea01ca759b213fcef3b2391af4ad20116c641340e19e2
- 0x299a3ff4761c07d1cb4987908783634f7b9e00f8f10a005c2d99c16a74924a4f
- 0x049f39c56b6b9cf95e0d9ebf2081f54ac35b4d69ec211e8498958f47d088b46c
- 0xf522fa92d4115c2b18b96aa43119f8df9b4e96c92f5d6449d0fe96dcd4bf324c
- 0xc8abb13c711b67d9f1ef145286ed450a0f5566f054a4b290ea3d711873bcbe20
- 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
- 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae