{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security of transaction data?","a":"Decentralization: Blockchain adopts a distributed database, where data is not dependent on a single central node but is spread across multiple nodes. This  decentralized feature reduces the risk of data tampering and attacks."}]}],"pr":"453e815042cc504e16492f68e3a6903f898e6eda82622d88919647c643c6bb03"}