← The evidence ledger
Evidence row 750130
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.losbeto.xyz/forex-rate
- Recorded
- Previous row
- #547257
- Body SHA-256
- f25c7e57205d34a58b0203100b453a23c5746cf0437b61e997b70928226faa4b
- Leaf
- 0x2de8be9127d684561a67c491c66dc4085be74201d0a0e9fdddd86a959834d315
What was observed
{
"endpoints": [
[
"x402",
"https://api.losbeto.xyz/forex-rate"
]
],
"name": "Losbeto Market Intelligence",
"owner_address": "0xd5ba9711a3d052846a3695c70e7fcb8b3168fe7d",
"raw": {
"accepts": [
{
"amount": "12000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"requestId": "28a8c13b7227",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xd5Ba9711a3D052846a3695C70e7fcb8b3168FE7d",
"scheme": "exact"
},
{
"amount": "12000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww",
"requestId": "28a8c13b7227"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "GEhr9HCFTRDjanMg435frSgCVwVZYpNoPrEkmNBnFHFE",
"scheme": "exact"
},
{
"amount": "12000",
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
"requestId": "28a8c13b7227",
"tag": "x402-global-challenge"
},
"maxTimeoutSeconds": 300,
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"payTo": "MRVA6OABPQJNJ2WFUHFY57FMJXHBV37IU665MXRJX4JYBIWGACP3LSDUF4",
"scheme": "exact"
},
{
"amount": "12000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"requestId": "28a8c13b7227",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xd5Ba9711a3D052846a3695C70e7fcb8b3168FE7d",
"scheme": "exact"
}
],
"description": "Live FX rate for major pairs (?pair=EUR/USD): EUR, GBP, JPY, CHF, AUD, CAD crosses with the provider named in the response. [Wrapper over a free public source (https://exchangerate-api.com (free tier)) — you pay for o...",
"extensions": {
"bazaar": {
"dataFreshness": {
"cache_ttl_s": 60,
"live_data": "≤3s from source",
"preview_data": "≤15min delayed"
},
"description": "Live FX rate for major pairs (?pair=EUR/USD): EUR, GBP, JPY, CHF, AUD, CAD crosses with the provider named in the response. [Wrapper over a free public source (https://exchangerate-api.com (free tier)) — you pay for o...",
"info": {
"input": {
"method": "GET",
"queryParams": {
"pair": "EUR/USD"
},
"type": "http"
},
"output": {
"example": {
"base": "EUR",
"pair": "EUR/USD",
"provider": "Losbeto/Forex",
"quote": "USD",
"rate": 1.121076,
"source": "exchangerate-api",
"timestamp": "2026-10-26",
"ts": 1793058776,
"version": "48.34.1-GUARDFIX"
},
"type": "json"
}
},
"inputSchema": {
"properties": {
"pair": {
"description": "Currency pair, e.g. EUR/USD, GBP/USD, USD/JPY",
"type": "string"
}
},
"required": [
"pair"
],
"type": "object"
},
"naturalLanguageDescription": "Live FX rate for major pairs (?pair=EUR/USD): EUR, GBP, JPY, CHF, AUD, CAD crosses with the provider named in the response. [Wrapper over a free public source (https://exchangerate-api.com (free tier)) — you pay for one schema, one payment rail, signed receipts and monitored uptime.]. Tier: discovery. Live via x402 or credits; free delayed preview via ?preview=1. Auditable on-chain settlement; Ed25519-signed metrics.",
"pricingRationale": {
"notes": "Aligned to x402 ecosystem median (~$0.028/call). Premium tiers reflect multi-source aggregation cost.",
"price_usdc": 0.012,
"tier": "discovery",
"vs_median_x402": 0.43
},
"provider": {
"name": "Losbeto Market Intelligence",
"url": "https://api.losbeto.xyz"
},
"ranking_hints": {
"category": "discovery",
"primary_tag": "Forex",
"unique_selling_point": "Live FX rate for major pairs (?pair=EUR/USD): EUR, GBP, JPY, CHF, AUD, CAD crosses with th"
},
"sampleQueries": [
"GET /forex-rate?preview=1 # free delayed sample",
"GET /forex-rate # live data (returns 402 with payment challenge)",
"GET /forex-rate?pair=EUR/USD # with parameters"
],
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"queryParams": {
"properties": {
"pair": {
"description": "Currency pair, e.g. EUR/USD, GBP/USD, USD/JPY",
"type": "string"
}
},
"required": [
"pair"
],
"type": "object"
}
},
"type": "object"
},
"output": {
"properties": {
"example": {
"description": "Live FX rate for major pairs (?pair=EUR/USD): EUR, GBP, JPY, CHF, AUD, CAD crosses with the provider named in the response. [Wrapper over a free public source (https://exchangerate-api.com (free tier)) — you pay for one schema, one payment rail, signed receipts and monitored uptime.]",
"type": "object"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"forex",
"globalmarkets",
"fx-rates"
],
"title": "Forex Rate — Losbeto",
"useCases": [
"FX arbitrage",
"hedge sizing",
"cross-currency valuation"
]
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790529703/bazaar-icons/b104f2f7df1a4ce6.png",
"lastUpdated": "2026-10-27T00:06:19.862Z",
"quality": {
"l30DaysTotalCalls": 76,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-27T00:06:19.681Z"
},
"resource": "https://api.losbeto.xyz/forex-rate",
"serviceName": "Losbeto Market Intelligence",
"tags": [
"forex",
"globalmarkets",
"fx-rates"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Live FX rate for major pairs (?pair=EUR/USD): EUR, GBP, JPY, CHF, AUD, CAD crosses with the provider named in the response. [Wrapper over a free public source (https://exchangerate-api.com (free tier)) — you pay for o..."
}What the leaf hashes
{"body":"f25c7e57205d34a58b0203100b453a23c5746cf0437b61e997b70928226faa4b","id":750130,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178672788591,"prev":547257,"subject":"x402_bazaar:https://api.losbeto.xyz/forex-rate","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (231336 rows).
- 0x2de84e8d1c6c2c24a1414ff23a6867ef990d8a4b96502f8f73231713c03753ee
- 0x8ea16a02a286a024cb908dab48531b26d25f90ddd4847ba2114da68dcc2ba344
- 0xfbe080180e90bd351d2a8162c082c40dc01d0f279aa90e045208f430e5bead2c
- 0x527349c730cfcbe1606ec90e56c44744a23a2fcceadafac703ccb1957cc1dcb4
- 0xb892c3522490a15bc06d696e395a039c61e6248199320bc02473673a7bd6da8b
- 0x8c132f7d1f21d9eb3b8f2f753defddef871a24fcb18198a8d49a6f0d113cb299
- 0x830496cf996d96b51c5410eacc7942845ddc8e1d20a3461d8b949ff7f72e7d68
- 0xe6f0ffcddae98ca25687c2dfce2a6d5f736d6a34f02cc397494c03d048a87d19
- 0x1bcdabe59e49d9ca24b15d1727ef9c48ef0254a725db7b0c044208dd0a4d2616
- 0xd504ba4e4dc631fbef01fd982d9bcd0a25e6b732049f9ac0225c551d46694717
- 0x82b8b74796b52bbdd62f7ed69facdd2972a94c39757c46f736b2180dba1d5061
- 0x0383fe3255c79fb178376a593551d0aefd8c75bd939df4c4f78d5b4cddb8108a
- 0x812d7bac70bc08f291fb19afa5eb8416c90a0b364e6f03602654beab04a997ad
- 0xa96695bb231e3cabeb4f03cab216cc6730b71e2304bf5be1e6c0447ea577aae6
- 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
- 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
- 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
- 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f
- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae