Hello again, I am not in a postion to give any legal advise upon this other than to strongly advise that you have obtained copyrights for any material you are shopping registered with the library of congress.There is no such thing as a "poor man's copyright" as in a registered letter to yourself or a notary seal.In some countries this does exist yet even then it is very hazy when you are in court. There is a link to the library of congress here on my link page which will guide you to what you need to know to register your work. Warmest Regards and best of luck to you, Rene