Evidence row 19376

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.marketintelligenceapi.com/api/v1/eu/fx"
    ]
  ],
  "name": "Market Intelligence API",
  "owner_address": "0x48d5a78d480b4c32de319c2aef69e682dc304615",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:137",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:42161",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9CAhY1vdaZfrfoto3KLQtRAo1dVWxNn5xAfmc2XbZVsf",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:480",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "900",
        "asset": "0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
        "extra": {
          "name": "EURC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "900",
        "asset": "0x1C60ba0A0eD1019e8Eb035E6daF4155A5cE2380B",
        "extra": {
          "name": "EURC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:480",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:84532",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      }
    ],
    "description": "Euro exchange rates and forex reference rates ($0.001): official ECB euro rates for about 30 currencies (USD, GBP, JPY, CHF, CNY, ...) with the date and the change vs the previous fixing. Use for official FX conversion rates.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "base": "EUR",
              "date": "2026-09-25",
              "rates": [
                {
                  "changePercent": -0.214,
                  "currency": "USD",
                  "pair": "EURUSD",
                  "rate": 1.1712
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "additionalProperties": true,
              "properties": {
                "example": {
                  "description": "Example JSON response returned by this endpoint"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input",
            "output"
          ],
          "type": "object"
        }
      },
      "sign-in-with-x": {
        "info": {
          "domain": "api.marketintelligenceapi.com",
          "expirationTime": "2026-10-26T02:40:44.699Z",
          "issuedAt": "2026-10-26T02:35:44.699Z",
          "nonce": "1cba1d6b2acbd5f98200cfdf00d04a2e",
          "resources": [
            "https://api.marketintelligenceapi.com/api/v1/eu/fx"
          ],
          "statement": "Pay this call from the prepaid credit of this wallet (bought with POST /api/v1/credits/buy/5)",
          "uri": "https://api.marketintelligenceapi.com/api/v1/eu/fx",
          "version": "1"
        },
        "supportedChains": [
          {
            "chainId": "eip155:8453",
            "type": "eip191"
          },
          {
            "chainId": "eip155:137",
            "type": "eip191"
          },
          {
            "chainId": "eip155:42161",
            "type": "eip191"
          },
          {
            "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "type": "ed25519"
          },
          {
            "chainId": "eip155:480",
            "type": "eip191"
          }
        ]
      }
    },
    "lastUpdated": "2026-10-26T02:35:44.757Z",
    "quality": {
      "l30DaysTotalCalls": 18,
      "l30DaysUniquePayers": 12,
      "lastCalledAt": "2026-10-26T02:35:44.271Z"
    },
    "resource": "https://api.marketintelligenceapi.com/api/v1/eu/fx",
    "serviceName": "Market Intelligence API",
    "tags": [
      "forex",
      "fx",
      "euro",
      "ecb",
      "exchange rates"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Euro exchange rates and forex reference rates ($0.001): official ECB euro rates for about 30 currencies (USD, GBP, JPY, CHF, CNY, ...) with the date and the change vs the previous fixing. Use for official FX conversion rates."
}

What the leaf hashes

{"body":"40a512319bf72597435f869311a3b10ef2098a6ef56820bd9d765089c6c09cae","id":19376,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025331582463,"prev":null,"subject":"x402_bazaar:https://api.marketintelligenceapi.com/api/v1/eu/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).

1. 0x16a5cbf10a25a0a390d6cb4ac16986216d2e02f83bc8c46b2e982604a990db4d
2. 0x1cba48267e0ef4542ee95ed427dc425eba429b24c200888e689d3cbb025ac2ab
3. 0x56ba313347fb9fa66d0afeb0e9ae8b09ce70185861699306d61fa70a30e44cce
4. 0xa043333b942bfe38e074a100f1648728fa0e800add4c2079ab7a00637fb34373
5. 0x24b44077afe748ded4a3f48230ac50f137b8e1330db4b8ea6761faad31971b3f
6. 0xd1dd9bbc0b05070fa4d771ebf41873bf0074f59b2592eb9446b673b14d867b33
7. 0x3dc11b936f955076f10cc7fe2454c9731af43a415cd66985b393a3c02a7d8144
8. 0x1fc307de931aa2e3e3c90f396faf8256bd59e00cf216c0426a34c72b27eccd31
9. 0x649aa5cafaafc7d2ca7ec3470d371c71fe05e3286a3aeafcc71734bb93fd3776
10. 0x051922b623453bd4bca9a9af0907e733bcc4583746990b8b7f187b87a9891e47
11. 0x1ff0b13d2481c9da18eda22ffeb00b1ce27c383301867cb629c19e9a2e4b869a
12. 0x856fd0d049baa5f07cd2d5d524b40c994bed22cb46ea15af4cc075b3f3f3d444
13. 0x32f46c5f73ecbfd4f770f7f760a79bee2afed4b3e7572fa882b3e7dce8df4356
14. 0x770e4376196188c7fc9ec40f8e218dc0d1cb92bba5fe0425a0edce27ca9a997f
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae