{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain in terms of IoT security?","a":"Data encryption: Blockchain technology uses encryption algorithms (such as SHA-256) to encrypt and  protect data, ensuring its security during transmission and storage. In addition, data in blockchain cannot be tampered with; once information is recorded in a block, it cannot be altered or deleted."}]}],"pr":"f7957dd1456bce958ba48853030398b47d7b87299699464b505fb83e49884b5a"}