What is an art certificate, and what should yours say?

Every serious work of art travels with a piece of paper that is worth more than its frame. The certificate of authenticity says who made the work, who sold it and who owns it, and it is the first thing a buyer, an insurer or an auction house will ask for when the work moves again. Yet many certificates are a logo, a signature and a hope. This is what a good one contains.

What it is for

A certificate does three jobs. It identifies the work so precisely that no other object can be confused with it. It attests that the artist made it, in the artist’s own hand or through the gallery that represents them. And it records ownership, so that when you sell, give or bequeath the work, the next owner inherits a history rather than a story. Without it, a work is still the same work; it is simply much harder to sell, insure or lend.

What it must say

The work: title, year, medium and technique, dimensions (height × width × depth, in centimetres), and for editions the size of the edition and the number of your copy, plus the number of artist’s proofs. A photograph on the certificate itself avoids arguments later.

The people: the artist’s signature or a statement from the representing gallery, the seller’s signature, and the first owner’s name and the date of sale. A certificate that names nobody proves nothing.

The identifiers: the gallery’s inventory number or SKU, and a unique code that can be checked somewhere other than the paper itself.

Six things a weak certificate leaves out

The dimensions, or dimensions that do not match the work.

The edition number, on a work that is one of many.

Any signature at all: a printed name is a label, not an attestation.

The date and the first owner, which turns the document into a receipt for nobody.

A way to verify it: a code, a register, a phone number that still works.

A record of what happens next: transfers, loans, restorations.

Paper, and what replaces it

Paper certificates get lost, copied and, occasionally, forged. The answer is not to abandon paper but to anchor it: a public register where the code on your certificate resolves to the same work, the same people and the same history, and where every transfer adds a line rather than a new document. That is how ours works, and it is the subject of a later guide. For now, the rule is simple: if the certificate cannot be verified without trusting the person who handed it to you, it is a promise, not a proof.

Ask for the certificate before you pay, not after. A gallery that has it ready has done the work; one that will “send it later” has not.

How avant.dev helps

Art advisory is what we do every day from Mexico City: we help collectors discover, acquire and build collections of original contemporary art, with the paperwork, the delivery and the certificate handled. If you would like a second opinion before your next acquisition, book a free 30-minute consultation or browse the works available now.