{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology help protect data privacy?","a":"Private key protection: By using private keys, users can encrypt and decrypt their own data, ensuring the  security of data during transmission and access. Private keys can achieve data anonymity and protect user privacy."}]}],"pr":"5b8c92bfa3c8a2472e8a5a781d2062f6fe9648814b1e54397b05d5b1c2000541"}