So I guess anyone can say their work is copywrited without having to submit any kind of forms to an agency like a patent process. You just have to have the date involved on it somehow and say that it is your original work. But, does this need to involve any written material from original art that is purchased Daz or Renderosity? If so, that's a LOT of text file documentation to keep track of. Or do you only need the documentation proof when you are legally questioned on the copyright itself?