{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain?","a":"Trustworthy data: Blockchain uses encryption algorithms and consensus mechanisms to ensure the authenticity and integrity of data, making it difficult to tamper with data in  blockchain, thereby improving the credibility of data."}]}],"pr":"437e5ccd7d5d2cd838897c0d70ee0ac356c1efd677a32d56ea8f5d89d7deb879"}