{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain?","a":"Decentralization: Blockchain adopts a distributed network architecture, does not depend on centralized servers or  institutions, and improves the stability and security of the system."}]}],"pr":"d55fea1ab36ea7ee701eda1a757a1c33a217609facba1955de544abfe8c80568"}