A certificate of authenticity is an important document that comes with an artwork and contains relevant information regarding its origin, provenance, and legitimacy. This certificate guarantees that the artwork is authentic, and an original work from the specified artist. It is often signed by an artist or any authorized person, and works of art that have depend claim to authenticity as well as value in the market. The certificate of authenticity aids in guaranteeing these claims. Initially used in the combatting of forgery, a certificate of authenticity became important in the 20th and 21st century peak periods of the art market in the protection of artist and collector's rights. Famous artists like Andy Warhol, Pablo Picasso, and Banksy, are well known to have used certificates of authenticity for their pieces. Aw while adding real monetary value to an artwork, a certificate of authenticity increases its provenance and market appeal. Galleries, collectors, and auction houses use these certificates to guarantee authenticity and ensure a clear art market. Certificate of authenticity today is central in preserving the integrity and value of original artworks.