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Evidence row 526963

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://exchange.use.x402atlas.com/currency-exchange-rate
Recorded
Previous row
#452027
Body SHA-256
21ec66ae9ad227b63bee87b3993cca499a922a32338af773a8bf41dbdd7ae32e
Leaf
0xf3b72d268c4ec6d35da1080ff1957440ce3c90539e6393ac921ca43cc4264f30

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": 6,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-27T10:06:42.858Z"
    },
    "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":"21ec66ae9ad227b63bee87b3993cca499a922a32338af773a8bf41dbdd7ae32e","id":526963,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124793265674,"prev":452027,"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. 0xf3b6eba993d14ef2e04c06980a78e0aa974aebd5029d35ebbb6696e91c65995d
  2. 0x08564f890e41e89be6236e563f9f725f78852a8b5e22e5da637c93a394891cb6
  3. 0xb58c33e2522e503aa7e516176c5177c654066d5e752753634c58ef1d3cf13f31
  4. 0xeb706db47e2ddfc0226559c35c92db9ee6acb11c4654e2f88aadd592efc2297f
  5. 0x635c054c30da36076f60f1af71a43ad814e34f5db4eee0ab51a4c70349671f5f
  6. 0x5a5f1cf45a1e26f6a1b73795ec41fd4ef82d061fade0ff01fa92bcfd24b5d17f
  7. 0xb2de1d5c32d3d382a04ac6c865cb8b3835d81c29e9fa853212416eb58240a6bb
  8. 0xd82cf3a2f3bb2cfdc2c145850bf785f08f39e7a492db250dc6b48edd53d60285
  9. 0x47ed66cff6ec1eda56dc58350fdc3b86ac0644cb25dade57d726bf89f294a73f
  10. 0xddaab828d387e516481bf4c2923ecf6c29884d48727ccbf20aa928bcba60c1f1
  11. 0xd7e1d15523cb9df856351d9c5d85a0e7b6456e5dbec143452707410c827472e5
  12. 0xd80cea574304ef1eee7c8b03c1efcaf66eb83498acb1756c4e37eb1d063b48be
  13. 0x47993ad5e402c748d96928c5127292d12f5f590d15cf544698f6bb348ad7dc9b
  14. 0xce1471491ffb52101d7cd9884cca0fb37a9496f6e8250375054907d24a35d04f
  15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
  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