How long do DSC fees last?

Could you please clarify what you mean by "DSC fees"? Assuming you're referring to some sort of digital service charge or fee associated with cryptocurrency transactions or services, the duration of such fees can vary greatly depending on the specific service or platform in question. Some DSC fees may be one-time charges, while others may be recurring or ongoing. If you're referring to a specific service or platform, it's best to check their official documentation or contact their customer support for the most accurate and up-to-date information on DSC fees and their duration. Additionally, it's always a good idea to thoroughly research any fees or charges associated with cryptocurrency transactions or services before committing to them.