{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve the efficiency of digital copyright management?","a":"Transparency and traceability: Blockchain technology provides  a transparent and traceable data storage and transaction platform."}]}],"pr":"f3aeaebdfe305dd61017a007f29569103b9a7d6e2246c55a7bd5eb2aa2a37f61"}