{"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":"Decentralized Control: Blockchain's decentralized control system promotes collaboration and information sharing among participants,  reducing the need for centralized management and improving the overall efficiency of data"}]}],"pr":"1980373e1d366525866360b00f621f624441d125c2d72658d34268b34b97f4d3"}