{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain technology?","a":"Openness and transparency:  The data in the blockchain can be viewed by everyone, everyone has a set of identical accounts, thus avoiding errors caused by individual moral risks. In addition, there is no need to organize professionals to verify information, greatly improving the efficiency of social operation."}]}],"pr":"1e80706a21e7c273053944e78a9160438dcfbd2c8075f3a577c5dc81793015a8"}