The certificate arrives with the painting, usually in a manila envelope tucked behind the canvas or rolled carefully inside the archival tube. It carries the artist's signature, the title of the work, its dimensions, medium, and year of creation. Sometimes there is a photograph of the painting reproduced on it; sometimes a gallery stamp; sometimes a second signature from a curator or platform representative. You file it with the purchase receipt and, in most cases, forget about it until the moment it matters - which is always, inconveniently, the moment you least want to be hunting through files.
What a Certificate Is
A Certificate of Authenticity is a written statement, signed by the artist or an authorised representative, attesting that a specific work was created by a specific person. It is, in its simplest form, a declaration: this painting is what it claims to be. In the context of contemporary art - where the risk of outright forgery is lower than in the market for historical works, but the risk of misattribution or misrepresentation still exists - the certificate is a formal record of the work's origin.
It is not, on its own, a guarantee of financial value. A certificate does not determine what a painting is worth on the secondary market; and a skilled forger can produce a convincing certificate as easily as a convincing painting. What the certificate does provide is a starting point for provenance - the documented chain of ownership and authentication that makes a work legible to future buyers, appraisers, and institutions.
When It Actually Matters
Certificates become important in three specific circumstances. The first is resale. If you sell a work through auction, through a dealer, or privately, the buyer will ask for documentation. A certificate from the original point of sale - particularly one issued by a reputable gallery or platform - substantially simplifies the transaction and may directly affect the price a buyer is willing to pay.
The second is insurance. Fine art insurers will typically require documentation of a work's identity and provenance before issuing a policy. A certificate, combined with purchase receipts and any available exhibition records, forms the minimum documentation base that most insurers need.
The third circumstance is estate settlement. When a collection passes between generations or is dispersed at auction, clear documentation of each work's provenance - what it is, where it came from, what was paid for it - dramatically reduces the legal complexity and potential disputes that can otherwise make art inheritance genuinely costly.
Not All Certificates Are Equal
A certificate signed only by an unknown third party, without the artist's direct signature or any institutional endorsement, is worth significantly less than one signed by the artist themselves. The gold standard is a certificate bearing the artist's signature alongside a photograph of the work, preferably on a document that can be cross-referenced with gallery or platform records.
Store certificates securely - ideally in archival sleeves in a fireproof location, separate from the work itself. Photograph both sides and keep a digital copy. And when the work travels - for loan, for sale, for conservation - ensure the documentation travels with it. The painting may outlast everyone currently alive. Its paperwork should be prepared to do the same.