If I read you right you are in the wrong forum since this one is about copy writing and I think your question is one of the legal kind. This being said, you don't have to do anything. When you create unique content it is automatically protected but owning the rights and enforcing them are two separate matters entirely. So if your question is how do I get my article to be protected by copyright, the answer is do nothing, but if the question is how to enforce that right you should ask your question at: https://forums.digitalpoint.com/forums/legal-issues.44/ Good luck!