A certificate of authenticity is a document necessary for the attribution of a work to an artist, or the paternity of a testimony to an individual. It may include the title of the work, the date of its creation, the name of the artist and various elements specific to the artistic discipline (support, dimensions, number of copies made, materials, photo of the work, etc. .).
Each certificate of authenticity for works of art does not have the same value: it depends on the level of expertise and recognition of the person who carried out the certificate of authenticity.