{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to securely handle transaction expiry issues in blockchain?","a":"Transaction validation: Implement a robust transaction validation mechanism to verify the authenticity and  compliance of transactions before adding them to the blockchain."}]}],"pr":"58e5f1ace87931424e68be26da3fb6e00990822beba0a6decc16644c9d4a7cd7"}