{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve the efficiency of big data storage and processing?","a":"Chain-based Data Structure: Blockchain uses a chain-based data structure where data is linked in  sequence, with each data block containing a reference to the previous one. This structure ensures the immutability of data while facilitating data query and verification."}]}],"pr":"10a544f9d3fdc62b88d7034268c260b6ca340086392e28faf44b17df961a0bc6"}