Evidence row 425304

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bess-x402.onrender.com/v1/finance/fx"
    ]
  ],
  "name": "Currency Exchange Rates",
  "owner_address": "0x1129a6bb9c6165ff07fdc509c107b522ca0e1871",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      }
    ],
    "description": "Official ECB reference exchange rates for about 35 currencies (USD, EUR, GBP, JPY, CNY, INR, AED, SAR and more) for today or any date since 1999, from any base currency, with optional amount conversion. Use to convert prices, invoices or salaries between currencies.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "amount": 100,
              "base": "USD",
              "symbols": "EUR,GBP,AED"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "amount": 100,
              "base": "USD",
              "date": "2026-10-21",
              "rates": {
                "AED": 367.25,
                "EUR": 89.0155,
                "GBP": 74.6172
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "amount": {
                      "description": "Amount to convert, default 1",
                      "type": "number"
                    },
                    "base": {
                      "description": "Base currency, default USD",
                      "type": "string"
                    },
                    "date": {
                      "description": "YYYY-MM-DD (default latest; weekends use the previous fixing)",
                      "type": "string"
                    },
                    "symbols": {
                      "description": "Comma-separated target currencies (default all)",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T04:08:51.827Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-27T04:08:51.639Z"
    },
    "resource": "https://bess-x402.onrender.com/v1/finance/fx",
    "serviceName": "Currency Exchange Rates",
    "tags": [
      "finance",
      "fx",
      "currency",
      "exchange-rates",
      "conversion"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Official ECB reference exchange rates for about 35 currencies (USD, EUR, GBP, JPY, CNY, INR, AED, SAR and more) for today or any date since 1999, from any base currency, with optional amount conversion. Use to convert prices, invoices or salaries between currencies."
}

What the leaf hashes

{"body":"344a25e5a9ef7250f75d335cc8d7bc302c72d2dbdb1872afaae9d3d45640a4cb","id":425304,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086109320889,"prev":407499,"subject":"x402_bazaar:https://bess-x402.onrender.com/v1/finance/fx","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. 0xb3250926cebe69c0d394f28c97ca941f7f0421c1618eba87c4edb0197e530381
2. 0xf469271d84e33ba9846e89ca830a022b4bd87920b5f4637ea135049e4e3f4c5a
3. 0x48ce456c88fe1ba3880094d7622eba34f2c229363e3bbd7432d4a603903fc20b
4. 0x3e53f90e6fd29ec30df5cdbbd7d752c6b1d3df8be7023ed33ecb41139f7bbbdf
5. 0xa8973846f6f043de83ff330aa57b6c2412547fdacedee9e238536db520c3f4c0
6. 0x21d3e67404605d156e6c81eb416176e6d5a96ee6fe093043c48dc2b621f25119
7. 0x8ece7bc5b9389ea50713be515349558a07d393efe474b1e1aeab22229458eac9
8. 0xf65a8de462c69175a1a96667101760cfe81b3033102c120b573f93cfd90952ec
9. 0x66641a5de5773f191ee4c359122b78665def3f4c25f20287284b8f42f36b6e7f
10. 0x70e1a807254d3ffa88dc48fdd8a48e01352e196a3337a1b38bc0fb82b21b0c40
11. 0x86028923d07588db14494db8e3f5477d37f29bebfab3475069528bce48c5f3c8
12. 0x305c0e886bebb6df8123db384ccd0d5bfc3ddf1de5fbf4edca0aea32f7e223a0
13. 0xf1104ea7df082465ff9df25ed29be80a0ac7c1c6b25c289b5d2e6ae5e6331952
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4