{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the application scenarios of blockchain?","a":"Blockchain technology can be used to establish a transparent and  traceable supply chain system, reducing transaction costs and ensuring the safety of the supply"}]}],"pr":"79c7e08a339f8587890ce062ac142c60c52c1239cd5326574a8853a8dba836ed"}