Copyright.gov, “What is Copyright?”
Association of Research Libraries: Know Your Copyrights
Copyright is a type of intellectual property. It protects original creative works as soon as it has been fixed into a tangible medium by the author. Copyright covers works such as books, poems, blog posts, movies, plays, paintings, photographs, illustrations, sound recordings, musical compositions, and more.
Copyrighted works are created by a human and have a minimal degree of creativity. They are captured in a sufficiently permanent medium (i.e., when it is written down, recorded, etc.).Copyright protects expression, not ideas, procedures, methods, concepts, principles, or discoveries. Because original works must be made by a human, works created by Artificial Intelligence by definition cannot hold copyright.
View CU's Copyright and Beyond Research Guide for an in depth description of copyright.