cancelOrders

The cancelOrders method sends a JSON‑RPC request to cancel one or more orders. For each order, the node validates the provided signature and order ID. The response is an array of booleans—each element indicates whether the corresponding cancellation request was valid.

Note: A true value means the cancellation request is valid and accepted by the node (although full cancellation requires network propagation), while a false value indicates the request is invalid.

Parameters

The request accepts an array of objects. Each object should include:

Parameter	Type	Description
signature	Object	Contains signature details:
		- y_parity (bool): Parity indicator
		- r (U256): Signature component
		- s (U256): Signature component
user_address	string	Address of the user initiating the cancellation
order_id	string	Unique identifier of the order to cancel

Result

Array<bool> — Each boolean indicates whether the corresponding cancellation request is valid (true) or invalid (false).

Code Sample

 curl "NODE_URL" -X POST -H "Content-Type: application/json" -d '
{
  "jsonrpc": "2.0",
  "id": 0,
  "method": "angstrom_cancelOrders",
  "params": [
    {
        "signature": {
            "y_parity": true,
            "r": 4232450345324523451,
            "s": 234321905834598324753894572,
        },
        "user_address": "0x39f11b34e4702bcfbce388c919e7d77b45b4df94",
        "order_id": "0xdcf4c51c20054616866ad48fb566c12cfb01f24a819a03b7a7c8af7d4dc746c1"
    },
    {
        "signature": {
            "y_parity": false,
            "r": 423245034532452345123,
            "s": 23432190583459832475389457223,
        },
        "user_address": "0x39f11b34e4702bcfbce388c919e7d77b45b4df94",
        "order_id": "0x4444c51c20054616866ad48fb566c12cfb01f24a819a0ac5a7c8af7d4dc746c1"
    }
  ]
}
'

Response

{
  "jsonrpc": "2.0",
  "id": "0",
  "result": [false, false] // False since signature doesn't match order ID in the request above
}