Evidence row 1038467

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": 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":"14e85ec09b025611456e5864c33e3696bdff82b62c7e43520fad8c7c01dfa945","id":1038467,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793298271109192,"prev":425304,"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 2026-10-29 (242798 rows).

1. 0xd939293d96bd8d3878c77b6b1a1ef18c319e3fb7ee4fba6d2ab36bac62c7a3da
2. 0x61d98896c1ee35d38c41e22c53f8c5a9c94b2cd2f876f31914d646fb2e735774
3. 0xd3323f4db5995d3c1056a5e6313599196a0d3b1b11a063bf3c7860d53c99f3c9
4. 0x5c0b73b3f63e2d54d8e6072ca936f13a1ec69c9534bb99e6f52fe736b27c2d3b
5. 0x24b9adc85ca470ef9c6978d6dca3aba65c23a6f5a246f45d61e1972f1a908a26
6. 0xd65328d46b849e8db0a8c21514bd16a5e1e8b58401f5c01dc32c7b7d8d21a230
7. 0x77481928276d0cdcc99cd6c9df2d0b823965636b3a22c48ebb05ab80e95c0324
8. 0xcaae9c66ec46865c74fd0412128dd5fde8cc83a9111b4d047c7b04ab2bdad6e1
9. 0x2e38d0ff25b0b715cb1666274060b1d270d03b5db8acabacaab4c4e80851c1cf
10. 0x07d55d0d154e5c61b7555ba631093650e8d378757a57394d078c9b79f412a902
11. 0xec6706d13f61f71259971a675d1e6d0681cfd76845bf57d2424af851c810ea5b
12. 0x8522b6d17f15c0c1abc36194c9894bdee4c4687a5eb503bcb0fab90198db90af
13. 0xbab97b696ffe737616975d37e243af07fa246058d99161c165f9f96fde8768ff
14. 0xb75e183026f9112474e3710d846b63188d3bba750c3ad3feabd9a22ee7d080fc
15. 0xa7d3fa0a08edea990614977b51a6b3289c357a88d8ca06dcbfe67415a017c0e7
16. 0xa034ebc8d117fbf1ed466b70baa0478bf213b743e1a41cba1d2da7a9f310184d
17. 0x1597ec94933260048e5e583aff1ad0fd44cc49efcd0a994091ed5db4924d7b02
18. 0xe01539ac4c9f9cdf265a9e5c6d99c8da11e70ff0c7175fb23e402d33b9d79785

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1