Sometimes you would like to add some kind of a attachment to a work in order to report, supplement, or make clear any particularity of it and so on. You can send documents such as contracts (for the case of shared ownership of rights) that specify the degree of ownership that exists, mock ups, details of the work in the case of for example a sculpture or a painting, etc..

The document is also sealed up digitally and may be publicly shown, downloaded or not, etc...

This option is not available in the basic registrations.