After I receive an image from the artist I immedately put it into my own controlled triple redundancy (Sta.sh, Computer HD, Portable HD). Been doing that since I ended up losing all my photos and interesting files from my high school days when my computer exploded.
Recently saved my ass when I got a nasty infection and had to hard wipe my computer. Having all my photos, arts, music, programs, ISOs, text files, etc. at my finger tips makes the process a whole lot less painful.