{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the authentication problem?","a":"Decentralized storage: Blockchain technology adopts a  decentralized storage method, distributing data across multiple nodes, thereby avoiding the risks of centralized storage being vulnerable to hacker attacks and data breaches."}]}],"pr":"1970894d39f47bf14350630756b9389bf30ff2a0b4f1f2acc6350e00cc2e9db8"}