Evidence row 70510

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.x402node.dev/market/funding-arb"
    ]
  ],
  "name": "api.x402node.dev/market/funding-arb",
  "owner_address": "0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e",
  "raw": {
    "accepts": [
      {
        "amount": "15000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e",
        "scheme": "exact"
      },
      {
        "amount": "15000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up",
        "scheme": "exact"
      }
    ],
    "description": "Cross-exchange perpetual funding-rate spread for a symbol across OKX, Bybit and Binance. Returns each venue funding rate, annualized, the cheapest and most expensive venue, the spread and a cash-and-carry funding arbitrage hint. Live aggregated derivatives data for funding arb and perp venue selection. funding rate arbitrage, perp funding, cross exchange spread, basis trade Accepts payment on Base or Solana — either network works.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "symbol": "string"
            },
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "symbol": {
                      "description": "coin symbol, e.g. BTC, ETH, SOL (default BTC)",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:20:58.162Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:20:57.868Z"
    },
    "resource": "https://api.x402node.dev/market/funding-arb",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Cross-exchange perpetual funding-rate spread for a symbol across OKX, Bybit and Binance. Returns each venue funding rate, annualized, the cheapest and most expensive venue, the spread and a cash-and-carry funding arbitrage hint. Live aggregated derivatives data for funding arb and perp venue selection. funding rate arbitrage, perp funding, cross exchange spread, basis trade Accepts payment on Base or Solana — either network works."
}

What the leaf hashes

{"body":"a8559a9f37b9de052a4bcfd52c208578c0641b7ec9342bd67ce016400077426e","id":70510,"kind":"listing","method":"baseline/1","observed_us":1793025480613372,"prev":null,"subject":"x402_bazaar:https://api.x402node.dev/market/funding-arb","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. 0x18feb67fa3b6056c198c0516f5d0cf99afc1181e577faf152882d3893a6dd48d
2. 0x72ccd6a6610e42c122ccb7bf89cc36fa20b293e2c7e87645d3f8072eb9359db5
3. 0xe41e8eed21a2da6ea056a45dd9da911d979dd6c101a653981ffe2fbc757d2a9a
4. 0xbd4b251c5dfb97fe84d9c11e27e99a407a1bf6a72dec0b6a4e34cb38e60c718c
5. 0x01946b774eb2f604431bc4411d3462df2279139393ef6de438416fcabd90f781
6. 0x19c1df19028aaeea7d8231d721ed40c2df7c535a2592fe14d0ce8b865e9b47cd
7. 0x87710cbd85e307e2009eb49c12606aa859bdddfa25db50ebe926fdc3b5c462c8
8. 0x7d0fe68ced8b757f521199aad96f7a86f668b7c40b78645acd4718cdb2b628c6
9. 0x28f9c1963ad05d87bf739f42350f55aa6e513d8c6c846588fd639a4b5705fb3d
10. 0xcb3e3aedb72ed8e61cbaa8991a4949a4faf974931a0daec4005c2e39529d76a8
11. 0x04d98d8716f171bd2264c6c49606521f410107287c5094c713f72cdf2fe1e1ed
12. 0x15eab8feed5b3f08165d63b9f1aed508c0624966a05349e051f86f0c188707b5
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