← The evidence ledger
Evidence row 1788069
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.losbeto.xyz/forex-rate
- Recorded
- Previous row
- #1506654
- Body SHA-256
- bd99f4a22ad8cbd0462b3c2eb303ae4aea833fe85a120c39191ac70a75c70b5f
- Leaf
- 0x8f9424c25287519e76d89f04cd16f9561cc60621dfc8956e558278e392b40c6e
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": 59,
"l30DaysUniquePayers": 5,
"lastCalledAt": "2026-11-01T16:09:04.041Z"
},
"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":"bd99f4a22ad8cbd0462b3c2eb303ae4aea833fe85a120c39191ac70a75c70b5f","id":1788069,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559895408416,"prev":1506654,"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 (302406 rows).
- 0x8f942ca9c12229ecfa046e20cc273eceaaa9eba0d32160482f937ff2d31713d6
- 0x2521464d442454cc65b71931c669044cdb8d25c58152b048cfbf52d711549e47
- 0x392da3f604b8e25964518a5dfef20d9e1a8674332003d245bfdbdc632efc03bb
- 0x6a67dea76f65271997b045648396d88fb03f8f1bb54d7faecf1f75d0f457480e
- 0xfa27a03c10ddbe8ee7087a523d46aa7b5a920c150c0ddd6d494eaaf3c7a0b73b
- 0x3bbc638b35da5b3553959edbb3298661dabfa48241257c81b830f3e0398cad5a
- 0x2f597391e6197fd437b99c6c1e1c44239c70de377261809359c0c7b8e6d49de2
- 0x5cd16c800959c0a6642eb0f743bc49d616ff430e609806a00768bb63634c329d
- 0xd08af6e69689d2b1e78dd54363787910c5594a4567932ced2fef5318baf7216d
- 0x00c71907037b85ff015196426e58aec739789efd6cbabff00043b2852654ea8c
- 0xd4e6d2a5d588554f8c9aa5b924a8860189507f70b39346c868d4e03c702ff5bd
- 0x975ddd222bead9708a1d5eb602535d44e806cc898a062f63445bcd5475b18160
- 0x592c6bf7478ece75e30eaddee3c7949403bcafb35d8489fe5310c10667a2df24
- 0x43a0d126875c656347b68ba3c0196959406aa8df8a7cd284fd2814ddd386322c
- 0x23107b06227fe01d939429fa5248f5555093c421dfc6b8bc6ba3518a65263d17
- 0xc2b1c84ef3531511a3d8d9db5ff9eeca2725a3782e7f9c4ac87fc0f1588349fa
- 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
- 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
- 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910
- Day root
- 0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3
- Chained
- 0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4
- Published
- On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90