Evidence row 407727

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": 84,
      "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":"36ef1cee852e1faad08ab5dc17cffa0b85c3fc4962c7370bc3ac8dccbd7902ad","id":407727,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080251539899,"prev":278775,"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 2026-10-27 (273461 rows).

1. 0xdcf91f00e245c48ced5babbca320d9e48108b722ea36595e8e8944d3525fa87c
2. 0x0ccab2d57955e8d2d01c1195c3bbf3fcd0b00b7cacc246093af2d84c6e8faf8f
3. 0xe10dcf421df9cf542664870c0c6b9cace00e49b577006d8b72713201c723db61
4. 0xb3cf34f0c7f1bbb39cac321e2beb69840b47c688bb24fadf2a7cf040d1559d1c
5. 0x74681939377578decd4950bf32e2b5ab3046f15a524f1a223c5f4dd8dc3e13cb
6. 0x156fe3e8c01ed42386148d50bb6ad2fe19720a5e85ba03ffcfec52b6f0849b22
7. 0xbe8a35d0129d64906d4ea211d53fc61bd74ded323fd519620bf2114cdf7e8c42
8. 0x7d1ccd6447a447adb720716c3cc3104568a7928c309bffddc7bd9fdcbc6a229a
9. 0x54d8ce3a1fe3b7bb24109fbc9aacfb7a6609fee099d55299638270599f05e161
10. 0xd041fc31177f879025c438c75a3956c116173e7c79932bb41a72b95c68aadcf5
11. 0xe7eebf475975d90d310c445a11de6a904d138911aeb29ce874f38db2815689d0
12. 0x1269bf9fca7c16778dd2b72e0163a91a5a288ca31d13ad19673e0d6ecf6de8d5
13. 0x9f8e192630bb5fc72241bfdb0460be2fccc141b3afd0197fe2e478dc28ce82a9
14. 0xd59f3e577867f5105dd7f75598f16da8286185e426dfcdafb84e733fde2b2492
15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4