← The evidence ledger
Evidence row 3063452
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.losbeto.xyz/forex-rate
- Recorded
- Previous row
- #2631873
- Body SHA-256
- 6b0404bfe2ab56692d52ea8d1b193e1351c8f0a5dc0e9b2d0aa4bcad996a13a1
- Leaf
- 0x0317b3aa763934dc7b7471bbde84a8ecd5626f895e5f6034e41045c5601a060e
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": "ad11c676b8c6",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xd5Ba9711a3D052846a3695C70e7fcb8b3168FE7d",
"scheme": "exact"
},
{
"amount": "12000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww",
"requestId": "ad11c676b8c6"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "GEhr9HCFTRDjanMg435frSgCVwVZYpNoPrEkmNBnFHFE",
"scheme": "exact"
},
{
"amount": "12000",
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
"requestId": "ad11c676b8c6",
"tag": "x402-global-challenge"
},
"maxTimeoutSeconds": 300,
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
"payTo": "MRVA6OABPQJNJ2WFUHFY57FMJXHBV37IU665MXRJX4JYBIWGACP3LSDUF4",
"scheme": "exact"
},
{
"amount": "12000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"requestId": "ad11c676b8c6",
"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": 1.116071,
"source": "exchangerate-api",
"timestamp": "2026-11-01",
"ts": 1793511126,
"version": "48.43.0-SIGNALFIX"
},
"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.",
"outputSchema": {
"properties": {
"base": {
"type": "string"
},
"pair": {
"type": "string"
},
"provider": {
"type": "string"
},
"quote": {
"type": "string"
},
"rate": {
"type": "number"
},
"source": {
"type": "string"
},
"timestamp": {
"type": "string"
},
"ts": {
"type": "integer"
},
"version": {
"type": "string"
}
},
"type": "object"
},
"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": {
"properties": {
"base": {
"type": "string"
},
"pair": {
"type": "string"
},
"provider": {
"type": "string"
},
"quote": {
"type": "string"
},
"rate": {
"type": "number"
},
"source": {
"type": "string"
},
"timestamp": {
"type": "string"
},
"ts": {
"type": "integer"
},
"version": {
"type": "string"
}
},
"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": "2026-11-01T05:43:31.974Z",
"quality": {
"l30DaysTotalCalls": 61,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-11-03T13:08:35.266Z"
},
"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":"6b0404bfe2ab56692d52ea8d1b193e1351c8f0a5dc0e9b2d0aa4bcad996a13a1","id":3063452,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793822188980130,"prev":2631873,"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 (424109 rows).
- 0x03184561caba37789d0fdc353251187e079b01720fbf93332815ce3a9319bb79
- 0x496fcd2b373ed4edecafabc2e3bed1edf30010c1b08a370b2594070e05c1b6cf
- 0x91c317e061b4c526d2ace7e19d32cde1344de3caf69a4f4dd9ae461cab6d4eb7
- 0x97b1356a88998b54b1b89beaa9573d6758b1d4afde8b7dc4adde240c35c17884
- 0x453679b2b2f781e4221e0c9a9fdda5163d94d2e2fbd6ba5d49d09297b2637059
- 0xdb06ab2090af5a8f267a712ab84032c190561e1805619da99f50880a28cdfb57
- 0x5b4e65eddfd990b99249ced2dc97dadb2c53c9eb0991f1b007cc3e6a920b12b9
- 0xfdcc7fa0755831822d8ba6f6c58caa19cd8ddafcd8f69c785757699afcd198a0
- 0xc7b6600e5f382af3a67cf0d6a0d03d5892a52a196bceedc9b383244270b3a6b1
- 0x0a8da480eea11395976bff2f36e288628f51dca572b5e5e913bee28f905a1632
- 0x960082aa62b2655dcc3c97aae26b92804a17f34d6fd51e38a5bdd13a994f9151
- 0xe82e08db55ec4d45c4297caab683f026dabd4d92fa23977e774f15c27c7af57e
- 0xad5a46dfc15b1fa22e8486151450a6f37d899055566d4c35056addcd7ce6bcf8
- 0x6a3416cf73ed4756d52640940225459d148cd46e589ccdf5cf8d39dc68c403bf
- 0x25c6f3031e09eeef9fb0f5c010f6aa1605f7af5f1a8859ce4db5ae48d0598359
- 0xcdac863807ea81d51a9ab718457637e91824fd377a06759901352d9a23933554
- 0x01c26569ec8e231551522ab452fd5d417c3d66f29c7c76886a8ec295a18dd624
- 0x02f64ca19e7d9b09718851d2ce3abf641982580de99411626d894607cf386cd5
- 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5
- Day root
- 0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee
- Chained
- 0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b
- Published
- On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345