Evidence row 1262319

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": "2026-10-29T18:15:09.16Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-29T18:15:08.769Z"
    },
    "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":"1197612c440a3bd03b4a9db3c802a439860f75a37721a71cb482cb37959a2357","id":1262319,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385521757611,"prev":1038467,"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 2026-10-30 (243099 rows).

1. 0xc82f781eb82e6a7a18c2de111674b5b3daae64ff060174bfb1988681e16e4dd0
2. 0xae4300bbda586c362c340832163243048f9e1d41709685361ef3b583a68b35af
3. 0x4ac28c4fd848bbc9a37ac5d769a1e44f43e32a373daa5cfdf5da6394320836d9
4. 0x5522e37a5cccf11fb684cf5efb9403c27e6684d9cbdc647d4e8477904629f2d1
5. 0x15ca622c5cd20129cbb03eaef084e4e0e16954b285f82510cd1a2fc0726c69f9
6. 0xcab59af37af08fae6a34ef3a3406f13111ef03c762c5093991de0b88b16086a7
7. 0x7d3e1d910b7dbe4b160d005309c604ac0dcea81715a895b9d7b733c23b52c138
8. 0x2539241d2bd0e4b0f77c4f7f58f9cf5114afc876520476876349114adb37e925
9. 0xd4298fb9f493316662c39aaa2dd2e2e7da057fb6e264348e15903b665b8e501e
10. 0xa84453294c6b2996970d302516223b3a9e04002b6815a621a8f14555cd08faf2
11. 0xcad197591ff71ea6f6936b8f69dcc60f872fa296d82dfa3f94b253ebe3bae38d
12. 0xf743749440a75595d1a689eaa9b10992f3c1ff2568626a04c93ad6d757ea076a
13. 0xe871cd2428940032cad4322fd8bd6009090d0d2fb6caaee78884f2cf23381bfc
14. 0x7ac7cb68967f6959f2b6a4c2bd1261865c8bce61484defcaab7d55cd759f2223
15. 0x9fb4eebd924fd42d4eb61d55691812de0db9242fc9c0dabb65c4054447246797
16. 0x0c59b8770d2782eb535aefbb9b2f6810bab4757f51b37e00f5147713a1de9481
17. 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
18. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861