A certificate of authenticity for artwork is a document that should accompany every artwork you create, whether or not it sells and it declares that the work was indeed created by you. Each certificate should include the following information: 

• Artist Name

• Title of the artwork 

• Year of completion 

• Dimensions

• Medium (for prints both the medium of the original artwork and the information about print itself)

• Photo of the artwork 

• Statement of authenticity (a brief statement written by you that states the authenticity of the work and relevant copyrights) 

• Any additional information (you can include details like subject or location of the artwork, location of artwork completion, contact information of the artist, link to online portfolio etc.) 

• Signature and date