Evidence row 527750

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vendsdk.com/api/v/fx-rate"
    ]
  ],
  "name": "vendsdk.com/api/v/fx-rate",
  "owner_address": "0xc648116b5debe4af7d78838aa468d07e0a9ab697",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xc648116b5deBE4AF7D78838AA468d07e0A9Ab697",
        "scheme": "exact"
      }
    ],
    "description": "Live fiat FX rates (Frankfurter/ECB primary, open.er-api fallback) for cross-border agents",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {},
            "queryParams": {
              "base": "USD",
              "symbols": "EUR,GBP"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "base": "USD",
              "ok": true,
              "rates": {
                "EUR": 0.92,
                "GBP": 0.79
              },
              "service": "fx-rate",
              "source": "frankfurter.dev (ECB)"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v/fx-rate",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "base": {
                      "description": "ISO 4217 base, default USD",
                      "type": "string"
                    },
                    "symbols": {
                      "description": "Comma list e.g. EUR,GBP,JPY",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "base": {
                      "type": "string"
                    },
                    "ok": {
                      "type": "boolean"
                    },
                    "rates": {
                      "type": "object"
                    },
                    "service": {
                      "type": "string"
                    },
                    "source": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:14:56.833Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-27T10:14:56.651Z"
    },
    "resource": "https://vendsdk.com/api/v/fx-rate",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live fiat FX rates (Frankfurter/ECB primary, open.er-api fallback) for cross-border agents"
}

What the leaf hashes

{"body":"52812b485827c0205bfadb427e37d1740b78eb5575077350ddffaef0e67a85ad","id":527750,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124854568921,"prev":453092,"subject":"x402_bazaar:https://vendsdk.com/api/v/fx-rate","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. 0x24fdcadd13afe07627754cdb98faea13454437b39543b8f95fc97d78d632e098
2. 0x94da08d22bcae4e230a36b71bdc0b0c6e502831334404c60be8a2a4e00b55268
3. 0x1a1e6a16a9501f2951de2dfe1213d0228d8e600d6fd49a1f0e106c6d6c63b32c
4. 0x2356d9cf096c643461180391613f2ba33acb65fb66e8656697c994aa88cecb90
5. 0xfd93dc83eeb733dd22eaf39e6f3b0ee576b90bd16b63d56df6554b6875434f9d
6. 0x717114d6c3d4fc3d110443c8394677c00291ad938140a672a2525fb75ef43af8
7. 0x55673bbc94df7faea9c976b5db64b69266a7c9e503dd258833a7da9581647cd0
8. 0xc92692058c41b23561bd01184f5dd43c1b11203c4ba20354d0720f0045480a32
9. 0x936e4c18c6839bdf232ce197d77c8be56ef271ee49b2936bdf2caf82c964f96c
10. 0x5fafa0283d2f8e918d0e3e14682d238f1e0d03a1e16175569f59939cabd18cfa
11. 0x17a5d8a0d619389b23b9c7065a443f140dfd86a50ae32f665f667aeeb0d62b5c
12. 0x442ef05dbe7931d22c60e72d459fdb2874e7d0eab89c16f41f0a865bf55610d6
13. 0x1a710d4f8e6092d584b581d8599ff9183c0008f9275cf0601c925b43b4e84ae6
14. 0xe8ee6f6ed50253c5ee2d1aa85a4b1a38ce94bca7f3b72fd1850f496152dbe285
15. 0xa383a1cfe9b3f6af67eb4c7642564b9424d46d7fca90e7ba175d549f8b67dd0c
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4