{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve data security?","a":"Encryption algorithms: Blockchain technology uses encryption algorithms (such as SHA-256) to protect the privacy and security of data. Each participant has a private key and a public key; the private key is used to sign transaction records, while the public key is used to verify signatures. This encryption technology can effectively prevent fraud and tampering."}]}],"pr":"f20f08eb476219ab73ace3a9ace5596718d3a428fd39df7e1dd46adfacfe952a"}