{"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":"12c5f3b713027707a7d5edd4265aa042769116ce4b274bfa58e44a957891395c"}