{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the possible upgrade paths for blockchain upgrading?","a":"Apply blockchain technology to more fields, such as finance, supply chain management, IoT, copyright  protection, etc., to expand the value and influence of blockchain."}]}],"pr":"5e3424d841f725fa8533b84b1118af85ec1625b95c8ee8dd2842b08b5b6547bc"}