{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology address data disasters and security vulnerabilities?","a":"Consensus mechanism: The  consensus mechanism in blockchain systems (such as proof of work, proof of stake, etc.) helps to resist malicious attacks and ensure the security of the system."}]}],"pr":"327c029b7eb84990ca6a143a43de127b03e5d8e498e1555b150cd690d315fe5f"}