{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What aspects should be noticed when setting up security for blockchain nodes?","a":"Network isolation: Through network isolation technology, the blockchain node is separated from  the external network to prevent potential security threats."}]}],"pr":"620ea233550e3abeb142fd125fe3de9f58803a8acb3e9ff12a29513984d3d961"}