{"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":"6b4d6b1e5ddd2699381412310f2996a3b1bd6434b804209c3c281363e7ba126a"}