{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology apply to digital copyright protection?","a":"Data traceability: Blockchain technology enables each digital content to have a unique identifier, realizing the  full lifecycle tracking of copyright sources, usage, and circulation processes."}]}],"pr":"590f86e86e47fb0849de3a5d215689a40938727062012a4611718061e1add569"}