{"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":"856073b763c3f25f5edc2875474a1e2bc91fd2ff36bf98bf019bfd5b4f617c38"}