{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the security of blockchain be ensured?","a":"Cryptographic principles: Blockchain utilizes encryption algorithms (such as SHA-256) and digital signature technologies to ensure the confidentiality, integrity, and authentication of data, preventing tampering or  leakage during transmission and storage."}]}],"pr":"335ef29a474665b5082479f67fdd2afc9c741c26538e397c2111cd744bac3d3c"}