{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the signing and management of electronic contracts?","a":"Identity authentication: Blockchain technology can achieve user identity authentication, ensuring that only  legitimate users can perform operations related to electronic contracts."}]}],"pr":"02e40bad4da862ef91c1ce091296e9df7072452f1b66d9900b6d4f39d0440a21"}