{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the security of transactions?","a":"Consensus mechanism:  Blockchain employs a consensus mechanism to ensure that transactions are valid and secure. The consensus mechanism verifies the validity of transactions and prevents double spending"}]}],"pr":"832e5288eed18842c21bac6d80680ac1f8178a8f8903b768e52825c14cf63a08"}