{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do you ensure the expiry time of transactions in a blockchain?","a":"Blockchain Consensus Algorithm: Consensus algorithms in blockchain networks (such as proof of work, proof of stake, etc.) can ensure the security and consistency of transactions. When transactions are bundled into new  blocks, the consensus algorithm will verify and confirm the transaction's validity, ensuring that only legitimate transactions are included in the blockchain. This process also helps maintain the overall integrity of the blockchain network and prevents fraudulent transactions from being processed."}]}],"pr":"b3236d56a6b91b9b504ac43e1e2665c0c57d7650d74457dc9f0bd79b93f87d81"}