{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the contribution of blockchain technology to secure identity authentication?","a":"Decentralization: Blockchain technology adopts a decentralized network architecture, and  there is no single central node in the data storage and transmission process, thereby reducing the risk of hacker attacks. In the authentication process, the decentralized feature can ensure the security of user information and prevent data breaches."}]}],"pr":"d5995ccb35fe2b8ece5be14cfc2dc91956662ee702de874d56f4d12c05620e7c"}