{"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":"18b3df7988ca6747575ebfc765a6999fb2e017c5bd84a2c78cc9d70207d9be4c"}