{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain improve the security of transactions?","a":"Decentralization: Blockchain adopts a decentralized network structure, with data stored on multiple  nodes, avoiding the risks of centralized control and reducing the success rate of hacker attacks."}]}],"pr":"517e1972ab72640157282d4779c27ac6eb59136d32baca0828ab30cd5f7a2a8e"}