This will protect you from others who may try to pass off your art as their own. If your career starts to take off and your work becomes highly sought-after, then you need to be able to prove that any art you have created in the past belongs to you. While it may seem like a waste of time now, it is important to remember that it may become vital in the future. Many small artists who haven’t developed a reputation yet may not think that obtaining a COA is worth their time and effort. Do You Need a Certificate of Authenticity?