{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are storage fees calculated in a blockchain?","a":"Energy consumption: The energy consumption of nodes in the process of data storage and  transaction verification."}]}],"pr":"03d94e84fc460d10db1846ac6547ff2d1be5f7c246def82d79289c74e208d73a"}