{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in cultural heritage preservation?","a":"Trading of digital cultural heritage: Blockchain technology can achieve the transparency and automated transaction  of digital copyrights. Through smart contracts, digital copyright transactions can avoid issues such as information asymmetry and high intermediary fees in traditional transactions, thus improving the efficiency of copyright trading."}]}],"pr":"16f20222ba401ec3587dc710b558bf53dd06c6b537fe388c2ecd0b5aa404efc5"}