{"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":"Authentication: The blockchain uses a secure authentication mechanism, allowing only authorized nodes to access and participate in  the network. This prevents unauthorized access and ensures the integrity of the system."}]}],"pr":"5558527f5d3eb590c3933966c93bc6dc661917346c7684e3e2ffe89830b27720"}