{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain handle the validation of transaction operation effectiveness?","a":"Confirm transaction input：Firstly，verify whether the transaction  input is valid，including checking whether the amount is within a reasonable range and whether the signature length meets the requirements."}]}],"pr":"b722a0e966ed1b722e18bfe1b03437fb81063055bbe7f3e654d9b02982c7d8a8"}