{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain technology in copyright protection?","a":"Immutable information: Once the data is recorded in blockchain technology, it is difficult to tamper with, providing a reliable guarantee for copyright protection and ensuring  the rights of the original creators of works."}]}],"pr":"738aeaa3a90913e9aadcf9353b08459b8ec52fc38cb2a24f730e5ef396e2ba46"}