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Evidence row 452027

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://exchange.use.x402atlas.com/currency-exchange-rate
Recorded
Previous row
#74975
Body SHA-256
b4eb918340e3929d7394c42ec4a4a8aae0395286c959028d3b3a3bc3e19d98ae
Leaf
0xd99b26fbad3c7a7d599c3cd5a88a098c2780cd9895d820b416777d051752a076

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://exchange.use.x402atlas.com/currency-exchange-rate"
    ]
  ],
  "name": "Currency Exchange Rate",
  "owner_address": "0x8c128f1ee62bb5e47867cfbae2ad89be325df1b2",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "merchant": "x402Atlas",
          "name": "USD Coin",
          "tier": "standard",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "merchant": "x402Atlas",
          "name": "USD Coin",
          "tier": "standard",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "merchant": "x402Atlas",
          "name": "USD Coin",
          "tier": "standard",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "merchant": "x402Atlas",
          "tier": "standard"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
        "scheme": "exact"
      }
    ],
    "description": "Get current exchange rate between two currencies using ECB data. Supports all major currencies. Returns rate, inverse rate, and date.",
    "extensions": {
      "bazaar": {
        "category": "finance",
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "from": "USD",
              "to": "EUR"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "date": "2026-10-07",
              "from": "USD",
              "inverse_rate": 1.176471,
              "rate": 0.85,
              "to": "EUR"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "from": {
                      "default": "USD",
                      "description": "Optional base currency, 3-letter ISO 4217 code from the ECB set",
                      "enum": [
                        "AUD",
                        "BGN",
                        "BRL",
                        "CAD",
                        "CHF",
                        "CNY",
                        "CZK",
                        "DKK",
                        "EUR",
                        "GBP",
                        "HKD",
                        "HUF",
                        "IDR",
                        "ILS",
                        "INR",
                        "ISK",
                        "JPY",
                        "KRW",
                        "MXN",
                        "MYR",
                        "NOK",
                        "NZD",
                        "PHP",
                        "PLN",
                        "RON",
                        "SEK",
                        "SGD",
                        "THB",
                        "TRY",
                        "USD",
                        "ZAR"
                      ],
                      "type": "string"
                    },
                    "to": {
                      "default": "EUR",
                      "description": "Optional quote currency, 3-letter ISO 4217 code from the ECB set, must differ from `from`",
                      "enum": [
                        "AUD",
                        "BGN",
                        "BRL",
                        "CAD",
                        "CHF",
                        "CNY",
                        "CZK",
                        "DKK",
                        "EUR",
                        "GBP",
                        "HKD",
                        "HUF",
                        "IDR",
                        "ILS",
                        "INR",
                        "ISK",
                        "JPY",
                        "KRW",
                        "MXN",
                        "MYR",
                        "NOK",
                        "NZD",
                        "PHP",
                        "PLN",
                        "RON",
                        "SEK",
                        "SGD",
                        "THB",
                        "TRY",
                        "USD",
                        "ZAR"
                      ],
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "date": {
                      "description": "ECB publication date (YYYY-MM-DD) of the rate; last business day on weekends/holidays.",
                      "format": "date",
                      "type": "string"
                    },
                    "from": {
                      "description": "Base currency code, upper-cased.",
                      "type": "string"
                    },
                    "inverse_rate": {
                      "description": "Units of `from` per 1 unit of `to` (1/rate, 6 decimals).",
                      "type": "number"
                    },
                    "rate": {
                      "description": "Units of `to` per 1 unit of `from`.",
                      "type": "number"
                    },
                    "to": {
                      "description": "Quote currency code, upper-cased.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "from",
                    "to",
                    "rate",
                    "inverse_rate",
                    "date"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        },
        "tags": [
          "currency",
          "exchange-rate",
          "forex",
          "fx",
          "ecb"
        ]
      }
    },
    "lastUpdated": "2026-10-27T10:06:42.983Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-19T11:33:13.824Z"
    },
    "resource": "https://exchange.use.x402atlas.com/currency-exchange-rate",
    "serviceName": "Currency Exchange Rate",
    "tags": [
      "currency",
      "exchange-rate",
      "forex",
      "fx",
      "ecb"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get current exchange rate between two currencies using ECB data. Supports all major currencies. Returns rate, inverse rate, and date."
}

What the leaf hashes

{"body":"b4eb918340e3929d7394c42ec4a4a8aae0395286c959028d3b3a3bc3e19d98ae","id":452027,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100516988701,"prev":74975,"subject":"x402_bazaar:https://exchange.use.x402atlas.com/currency-exchange-rate","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).

  1. 0xd99b5a3518233fd931249d8ad1328864979c69f71f6b3960a7ba609ec2d958d2
  2. 0x0fccc2f4cb11cfd6e3c0c533d307cec482e0628aae2be576653f712a5b597dfb
  3. 0x1e4bf3b5318162c67e15259cf5113df151b8a67ac3116b7df26a5f8ae5ca5636
  4. 0x6c00aff7e43a0dd1c3e91207f5286229550acda2dcfbc9610d9eb5b537e69d40
  5. 0x45e37b16af2b204b52b495549013abd5767d7c60fc31141c5d5b65f202c8e4e9
  6. 0x45b5ad3c13c377a1cd80b112cdab164bd5677437db4e287f947f11d89a82f902
  7. 0x00d6fac1826aaa2a45312b8351ad581797b39b0bb1b40356a1d130ff0c93b5ae
  8. 0xef3a70b22c61dfdb6ee50b081cd1672886f30034ac87542484a4080ff5868c83
  9. 0xedded979d6c55b62b70a8518f149b62e3262fa16f5f67e7c8a367c7b31efd3fe
  10. 0xd47af22d1878eee6975af947e6e45935f573b005c0fe9efe5590def172016768
  11. 0x7f6de085812928d3d7f3b15191238d47e17ef53dc519c83f30704118bb423398
  12. 0x29ce226640d83db3bc63fef23427a7af561200d30ffde9b1b7a61b814b844a39
  13. 0x13692b463800846f580925c8ea49b43f92b7df3f9e8d32b8a18802640cca3780
  14. 0xd59f3e577867f5105dd7f75598f16da8286185e426dfcdafb84e733fde2b2492
  15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
  16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
  17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
  18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
  19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
Day root
0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
Chained
0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
Published
On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4

How to check it · This row as JSON