{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the security of information?","a":"Encryption algorithm: Blockchain technology uses encryption algorithms (such as SHA-256) to protect data privacy and security. Each participant has a private key and a public key; the private key is used to sign transaction records, and the public key is  used to verify signatures. This encryption technology can effectively prevent fraud."}]}],"pr":"c382d231c7c86518d4c6c536dc2bc81915ad0e532290a6a010eb52df54992877"}