{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure security?","a":"Encryption algorithm: 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, and the public key is used to verify signatures. This encryption technology can effectively prevent unauthorized access and tampering with data."}]}],"pr":"a12beff8266115dd55a1c0e4c0d77e00929810bead8083d29e73e5a42e35be32"}