Evidence row 71568

Observed 26 Oct 2026, 14:38 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://bess-x402.onrender.com/v1/finance/fx
Recorded: 26 Oct 2026, 14:38 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 8afaffb2e0af885480d8a1c7c7f3ce20edccff0f0af5a83bdcdee17671280f20
Leaf: 0x36e1a113694162f3e616ca168a2f61507dc72f06b73297bf9df67846de03dc5e

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bess-x402.onrender.com/v1/finance/fx"
    ]
  ],
  "name": "Currency Exchange Rates",
  "owner_address": "0x1129a6bb9c6165ff07fdc509c107b522ca0e1871",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "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": "2026-10-25T10:20:29.728Z",
    "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":"8afaffb2e0af885480d8a1c7c7f3ce20edccff0f0af5a83bdcdee17671280f20","id":71568,"kind":"listing","method":"baseline/1","observed_us":1793025482961546,"prev":null,"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 2026-10-26 (296695 rows).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON