{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What special situations are suitable for persistent transactions in blockchain?","a":"Internet of Things (IoT) applications: In IoT  scenarios, persistent transactions can be used for secure communication between devices."}]}],"pr":"e7e24501c1563711b0f0ab3cad1b10bdc6ef585b4b3094c9ec24ef8a9a9dcbe0"}