{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security and immutability of transactions?","a":"Distributed Consensus: Blockchain employs a distributed node consensus algorithm, allowing computers (nodes) worldwide to jointly validate and record new transactions. The  consensus mechanism ensures the security and consistency of transactions, and only when most nodes agree on a transaction can it be added to the blockchain."}]}],"pr":"0d71bd83207deb6b889c326834e6e45cbd843df1c6e0b0d6b1685f753548faab"}