{"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":"b4c016970f9c81f2d0b69d2f1c15c697e69b6d078f1d55271a7bd1c5de69d91d"}