{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the challenges of blockchain in protecting personal privacy?","a":"Data Privacy: Although blockchain technology is decentralized, data storage and transmission on the blockchain still may be monitored. Due to the transparency of blockchain, all transaction records are  public, which means sensitive information may be obtained by malicious attackers."}]}],"pr":"6f62e8ebea3b452a2c4a45007393572d7d8e37ea2a172f0febc533db1fec95b8"}