Evidence row 2199927

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://chainhilt.ai/api/v1/perp/hyperliquid/twap/cancel/preview"
    ]
  ],
  "name": "chainhilt-x402",
  "owner_address": "0xdece8e839414e4a99213c658abbd2294d5bd42b0",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xdECE8E839414E4a99213C658ABbD2294d5BD42B0",
        "scheme": "exact"
      }
    ],
    "description": "Prepare a TWAP cancellation for L1 signing. Supply action type twapCancel, asset ID a, and TWAP ID t. Sign and submit unchanged using the returned submitPath. Treat spot and perp as one balance only when the account abstraction mode is \"unifiedAccount\".",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "action": {
                "a": 0,
                "t": 77738308,
                "type": "twapCancel"
              },
              "nonce": 1710000000000
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "response": {
                "actions": [
                  {
                    "chainId": 42161,
                    "data": {
                      "action": {
                        "a": 0,
                        "t": 77738308,
                        "type": "twapCancel"
                      },
                      "nonce": 1710000000000,
                      "typedData": {
                        "domain": {
                          "chainId": 1337,
                          "name": "Exchange",
                          "verifyingContract": "0x0000000000000000000000000000000000000000",
                          "version": "1"
                        },
                        "message": {
                          "connectionId": "0xe38cc5f6146ad42c08a03fd4f091c539f997a972ee251958d9356a3d2fa825a9",
                          "source": "a"
                        },
                        "primaryType": "Agent",
                        "types": {
                          "Agent": [
                            {
                              "name": "source",
                              "type": "string"
                            },
                            {
                              "name": "connectionId",
                              "type": "bytes32"
                            }
                          ],
                          "EIP712Domain": [
                            {
                              "name": "name",
                              "type": "string"
                            },
                            {
                              "name": "version",
                              "type": "string"
                            },
                            {
                              "name": "chainId",
                              "type": "uint256"
                            },
                            {
                              "name": "verifyingContract",
                              "type": "address"
                            }
                          ]
                        }
                      }
                    },
                    "protocol": "hyperliquid",
                    "submitPath": "/perp/hyperliquid/twap/cancel/execute",
                    "type": "signature"
                  }
                ],
                "errors": [],
                "warnings": []
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "accountAddress": {
                      "pattern": "^0x[a-fA-F0-9]{40}$",
                      "type": "string"
                    },
                    "action": {
                      "additionalProperties": false,
                      "properties": {
                        "a": {
                          "description": "Hyperliquid asset ID",
                          "maximum": 9007199254740991,
                          "minimum": 0,
                          "type": "integer"
                        },
                        "t": {
                          "description": "TWAP ID returned by placement",
                          "maximum": 9007199254740991,
                          "minimum": 0,
                          "type": "integer"
                        },
                        "type": {
                          "const": "twapCancel",
                          "type": "string"
                        }
                      },
                      "required": [
                        "type",
                        "a",
                        "t"
                      ],
                      "type": "object"
                    },
                    "expiresAfter": {
                      "maximum": 9007199254740991,
                      "minimum": 0,
                      "type": "integer"
                    },
                    "nonce": {
                      "maximum": 9007199254740991,
                      "minimum": 0,
                      "type": "integer"
                    },
                    "vaultAddress": {
                      "pattern": "^0x[a-fA-F0-9]{40}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "action"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T17:41:13.714Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T17:41:13.539Z"
    },
    "resource": "https://chainhilt.ai/api/v1/perp/hyperliquid/twap/cancel/preview",
    "serviceName": "chainhilt-x402",
    "tags": [
      "perp",
      "hyperliquid",
      "trading"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Prepare a TWAP cancellation for L1 signing. Supply action type twapCancel, asset ID a, and TWAP ID t. Sign and submit unchanged using the returned submitPath. Treat spot and perp as one balance only when the account abstraction mode is \"unifiedAccount\"."
}

What the leaf hashes

{"body":"d1fe2b4a2d6ba65607d5da8e160de1f2fffa1d818c9578809611d72afc4e2545","id":2199927,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646793592122,"prev":null,"subject":"x402_bazaar:https://chainhilt.ai/api/v1/perp/hyperliquid/twap/cancel/preview","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x55909d54b8970245701903be5cc9fefbc7108cadb975029e0f1f9f1a6ea61767
2. 0x9a679e475e2863d2f5b6546a2d694a4e924cde7cac7ca09dbd039f81c7b9cd2a
3. 0xd42f5e7fe244203bdbe2031806ff45fdb4c3c98c0dc19a8b25bc8f6130bb7c02
4. 0xc4fb594d3b93e14332a064bc8e1577fbf80592c8c261464abc63db019ea7b203
5. 0xe17291ac83e2fb33bca4664c09e7a47ee86fcfdb90fb36135a5980632e251671
6. 0xff9d8d7a297299705b90c348e61e0f7ba702ae76f09f0adb22ac2896b9a69517
7. 0x13e0e0625b13b3a3030097cd78b7adc4fffeb69bb4b8b0cfe30f213ff21d04a2
8. 0x3a20110998ab3a6b031e850ebcd77b6b65d2480dbc1b52eb7125ad965b4dbb9c
9. 0xe970a8a7040094d1782d7ee821069c84755a95f6ceedf794c4f708b70b93814d
10. 0x8aeda7c8800d731662762d48f22e9becf88b6a661a3ff4f310f71794a8024f01
11. 0x3738c107423c05d06d19332e8f2dc26707ea31936d5a59e0273aa3050c9bbd11
12. 0x60fa0410e92b55107aa67b0dc49b0a16f4a6d03a6b806a712da9290629167b04
13. 0xb5b32de12fac3b68a23088b6007f1052bd84011d7da80663c8664b4a4c7bcebf
14. 0xc73349c9955998a166e6e5920ac8ee0aa7bc6c9d66bace60f6dbd465dd9e0530
15. 0x52242d46cadab5f421a6f86c1edc6379b085ae98482fa80904e4a3028c1849a3
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af