{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve the security and trustworthiness of devices in the Internet of Things (IoT) field?","a":"Solve privacy protection and data sharing issues: Blockchain's privacy protection and permission control  mechanisms ensure the security and privacy of data while enabling secure data sharing."}]}],"pr":"833859b73e978405f19547907d32813c0c0ce92de43eab9561dbdbd16f634ab1"}