{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the application scenarios of smart contracts in blockchain technology?","a":"Supply chain management: Smart contracts can track and verify the origin,  transportation process, and quality of goods, ensuring the transparency and credibility of the supply chain."}]}],"pr":"b049474e6e4ad209343722867e684994d04c49c1ae1ed2c298b4ee0fe77a1301"}