{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to securely handle transaction expiry issues in blockchain?","a":"Periodically update the blockchain network with  the latest security patches and improvements to maintain its"}]}],"pr":"097177020c9a4fa091d6fa3ca980e9b43fc168590a844e162579124cb78e8fac"}