{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain?","a":"Lower transaction costs: Blockchain technology can reduce transaction costs and improve  transaction efficiency."}]}],"pr":"b4daf9f077495c634479ba9c448c301d15410038b16d43f8aa52134698f199eb"}