{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the data types in a blockchain program?","a":"Date and time type: Used  to represent date and time information, such as the timestamp of creating a block."}]}],"pr":"f82d4f00c90bfe6a0e5f6ff3e6c91b2d92e3b4263ac5d607d28e5b6abe22d61d"}