Evidence row 119932

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/fx/czech"
    ]
  ],
  "name": "Saylor Innovations Data Desk",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:datadesk:czech-fx",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:datadesk:czech-fx",
          "name": "USD Coin",
          "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:datadesk:czech-fx",
          "name": "USD Coin",
          "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:datadesk:czech-fx",
          "reference": "D3RyZxpYZCkShs1yXp1915v2H278XD1E5dnkbBwuXbrD",
          "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjemVjaC1meCIsInJlZmVyZW5jZSI6IkQzUnlaeHBZWkNrU2hzMXlYcDE5MTV2MkgyNzhYRDFFNWRua2JCd3VYYnJEIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzODI1NjgzMTl9.EcnyHuPstSTDgIHYvZYItGTYKL4L7jqXirR_eYm7f4Q"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:datadesk:czech-fx",
          "reference": "8HrSXXXkfQWwg6BsZvg55f1BxgJS4RQap5ijXM5yo1Lq",
          "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjemVjaC1meCIsInJlZmVyZW5jZSI6IjhIclNYWFhrZlFXd2c2QnNadmc1NWYxQnhnSlM0UlFhcDVpalhNNXlvMUxxIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTIzODI1NjgzMTl9.94RAeQbcSRVKa1gQrzFvryY0QzjR-i_RJeZthorpnVs"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92266",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:datadesk:czech-fx",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "95120",
          "reference": "HRMPXr868ZKgQfvzJRawz7GcJwEitTLsHBHNCir8tLT7",
          "session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjemVjaC1meCIsInJlZmVyZW5jZSI6IkhSTVBYcjg2OFpLZ1FmdnpKUmF3ejdHY0p3RWl0VExzSEJITkNpcjh0TFQ3IiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkyMjY2LCJleHAiOjE3OTIzODI1NjgzMTl9.FYfdaoplmz1ZRevCrLIyxqvVl5bmgZq8LA-NwE4nPFQ",
          "solUsdPrice": 105.13
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Czech koruna exchange rates from the Czech National Bank - official daily fixing for about 30 currencies, CZK per unit, EUR, USD, GBP and more",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "currency": "EUR"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "base": "CZK",
              "count": 1,
              "date": "2026-10-15",
              "note": "Official CNB fixing, published each working day around 14:30 Prague time. czk is the price of \"amount\" units; czk_per_unit normalises it.",
              "rates": [
                {
                  "amount": 1,
                  "country": "EMU",
                  "currency": "EUR",
                  "czk": 24.35,
                  "czk_per_unit": 24.35,
                  "name": "euro"
                }
              ],
              "source": "Czech National Bank (CNB)"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "currency": {
                      "description": "optional ISO currency code such as EUR or USD (omit for all ~30 currencies)",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "base": {
                      "description": "Base asset or base currency",
                      "type": "string"
                    },
                    "count": {
                      "description": "Number of items returned",
                      "type": "number"
                    },
                    "date": {
                      "description": "Date (YYYY-MM-DD)",
                      "type": "string"
                    },
                    "note": {
                      "description": "Caveat or context for reading the result",
                      "type": "string"
                    },
                    "rates": {
                      "description": "Rates keyed by code",
                      "type": "array"
                    },
                    "source": {
                      "description": "Data source the values come from",
                      "type": "string"
                    }
                  },
                  "required": [
                    "base",
                    "rates"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-19T04:00:48.35Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-19T04:00:47.926Z"
    },
    "resource": "https://saylorinnovations.com/api/fx/czech",
    "serviceName": "Saylor Innovations Data Desk",
    "tags": [
      "czech koruna exchange rate",
      "cnb daily fixing",
      "czk to eur",
      "czk to usd",
      "czech national bank rates"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Czech koruna exchange rates from the Czech National Bank - official daily fixing for about 30 currencies, CZK per unit, EUR, USD, GBP and more"
}

What the leaf hashes

{"body":"032e4bd9b46c3146209a89c0ad112b5f70831bf1546d6dffd5fdb81ab77e7b9a","id":119932,"kind":"listing","method":"baseline/1","observed_us":1793025616958075,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/fx/czech","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).

1. 0xfd0fdb4f477894cde9fed78624ad3c42cfa7737be1db8e1853e8699aa62e74d2
2. 0x4cde392ccdcebc8d23c947a78516c0245104b059cc3b848e18dba70c0e3a2417
3. 0xa59de835d4b0df5f95384fa99d461472a82ef3b6b91ca3cffc16a22c2e26edfb
4. 0x52c371b25a4bcf8029f67de8b018ece1ab6464657056a3dd3dd5da15c3ba2e26
5. 0x36b4d33400cb78ca465043c407e77dfacf3dc88c0147adc55fbc3ade6c91dc63
6. 0xb046ab6b57c1871971d76503ffc6e4d9e7ed432760dba9a6aa6059bcf93bef5c
7. 0xa9e7a9e091b715ce5bb8a7d56359eb9e0cb0c871fac9b9a44b2e40c7750c7058
8. 0x22ffa7c020efad3f08c4dbd31bfff0c149938fd1cbdbf399cea341a3627fc7ec
9. 0x166e1fc806f28d2cfb90b5e917853fbf01cf0f341d4c8822b0f786e4cbcf1d74
10. 0xf060241fb56836c62d3feefbc60d9401bb5e9f24893c10a5f67e7eab0a959c8a
11. 0x2e09594bba0b7c90654eee0c9a8e6b9ed83ead47a7e7c90e73414beaf0ad4088
12. 0xa1d268c111b09550fdb70b6d9d0b58c94dc828b083baa8f1360300aab6230a9c
13. 0xbee644d57738676bfb20eb90d6021f364bf883a8d54f8d17e9dc4749b4074c3d
14. 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae