Okay, so I have been playing around with blender for a long time, and have several finish compositions. I posted a few of my okay ones to facebook so that my friends could see. I have posted my favorites with the fear that someone will steal the artwork. Then i started thinking of how Facebook records when you post things so it has exactly what time and date I put a picture up. That means if someone copied it and put it somewhere else they would have to be later then me. Does that give me the copyrights, and would this even hold up in court?