{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are storage fees calculated in a blockchain?","a":"Storage capacity: The amount of data that nodes need to  store, including block size, transaction records, etc."}]}],"pr":"862bc069d9778223647bbda794ad2171b8e9a384e6f2dc58da500ce4f3d77cff"}