{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do blockchain transactions ensure security and privacy protection?","a":"Cryptographic encryption: Blockchain adopts cryptographic principles to encrypt  transaction data, ensuring the confidentiality of the data. Common encryption algorithms include SHA-256, ECDSA, etc."}]}],"pr":"bd39af15e79545490091372f16ca4de2d5d5e4f664e208c02685ef50467f9de7"}