{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does etcd ensure the security of communication between nodes and the reliability of data storage in a blockchain?","a":"Data encryption and transmission:  etcd uses the SSL/TLS encryption protocol to encrypt communication data to ensure the security of data during transmission."}]}],"pr":"4546f569ccc76477be6a88430b79483e95cbbe17532edcf4377736933978fe41"}