{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is batch cancellation of spot orders implemented in blockchain?","a":"The user creates a smart contract through a blockchain wallet application, which has the following functions:↵   - Listening to the spot order book to obtain order information.↵   - Checking the order status, only processing orders that have been placed but not yet executed.↵   - Obtaining authorization from the user's account to  ensure that only legitimate users can operate orders."}]}],"pr":"9c3184d27588c6d18d9041035a65ebb20512f6987d3c7b5f1258e2c71de402cd"}