{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security of transaction data?","a":"Consensus mechanism: Participants (nodes) in the blockchain network  need to reach consensus to confirm transactions."}]}],"pr":"131f49695a716fe4c2f931c08c73bc7e95c84d2b42be46b6be5a5b1a1c05e3c6"}