{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to prevent replay attacks on the blockchain?","a":"Utilize trusted timestamping services: Use trusted timestamping services to timestamp transactions, which  can help prevent malicious nodes from manipulating the transaction order or timestamp."}]}],"pr":"0285df95352e7de2493eef89e1e4e739d149665a2b6637de8a2165826b1e61f8"}