Evidence row 407499

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": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-25T10:20:29.503Z"
    },
    "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":"85196bdd48ef3da71df291facdf426cf0f6888f7e6c060368a50ea54bf860710","id":407499,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080248970063,"prev":71568,"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. 0x5b7638a7cb536adbc1288a3ee7cfb1cc7f44c3c85fee7350feee34c72dc38977
2. 0x945f6788ee9810d33065b1d033b9ec59d108634bfde0555e9611fc3cb1b86f2a
3. 0x823308292dcb528674092cda1cd0530038860bb6eee017ac4b4754a53f5f5aba
4. 0xa64734e987cf501e4cbc1fd2163cc3c63bb5dcf2885389467a283364c75f71d2
5. 0x67b4b629d16fb40e667c2493baecc50bb2cdcdf03ff0ad81a6671b6282c24d8e
6. 0x6942689f7a98f434482866cf35e1a0a341cc836d864fcbd54ff0fa6abbd4bbe3
7. 0xc59b62a9cdee01151aaca190ed7f627f3f9fea4e798e7e1edcf7c0507311626a
8. 0xd306a1f2d0ed7c7a52973b462d56aecee3f141b7647103334ecbc6e3857f334b
9. 0x9e2eebf123fae7b6849c93b6a9b9181478123c0f3e9bcf339c234bd8e7cb811d
10. 0x34609b4680e3eed53a7c5a7e6737b62a6cdb03d45e071798749af092dfb4d679
11. 0x2d219b1e0544e01cd0a0543f34de9ec53392c428e9c0deac7c16fabc7482887f
12. 0x8b6f2e00ca53627a556efa28a330329defff6f53091e97b18db21c58436307cd
13. 0x5b3213451efe1e2950dd287afaede00cc8a45dfd9721ef9b3d698bde1eeb9909
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4