{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do validators handle expired transactions in a blockchain?","a":"onfirm transaction timeliness: When a transaction is received, validators will check if the transaction is still within its valid period. Typically, the validity period of a transaction  is stipulated by the network consensus protocol, such as the 15-second validity period specified by the Ethereum smart contract platform."}]}],"pr":"52ce665f1a3595e52efbc3cf00166b98197f45ab3f3964bcb5d5e10d1bdc0898"}