{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain for digital identity verification?","a":"Data controllability: Users can independently control their identity information, choosing to disclose or  anonymize it as needed, thereby improving the security of identity information and enhancing privacy protection capabilities."}]}],"pr":"6eaef53974ebc54a1a511a26b348d3cf8222240c9ef181d3ca761f763b0894a9"}