{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain?","a":"Blockchain adopts a distributed  network architecture, does not depend on centralized servers or institutions, and improves the stability and security of the system."}]}],"pr":"9e48163c9b3137752130b37279950037cff731d5e576bdc6c0665e0a86ff9453"}