Certificate of authenticity for art: what it must include
A serious certificate of authenticity should carry eight elements: title, dimensions, medium, year, an archive or edition number, the artist's signature, a date of issue, and a statement of uniqueness. A document missing several of these is a label, not a certificate — see how Perfeito Studio's own certificate applies this standard in practice.
The eight elements a serious certificate must carry
Buying across a border, from an artist you have never met in person, removes most of the usual ways to judge whether a piece is what it claims to be. The certificate is supposed to fill that gap — but only if it actually contains the information that makes a claim verifiable rather than decorative. At minimum, a certificate worth relying on should carry:
- Title — the work's name, matching what is shown on the artist's own catalog or website.
- Dimensions — height and width (and depth, if relevant), stated in the same units used elsewhere in the sale.
- Medium — the actual materials used, not a vague "mixed media" with nothing behind it.
- Year — when the work was completed, not when it was sold or shipped.
- An archive or edition number — a unique identifier tying this specific object to the artist's own records. For a one-of-a-kind piece this is an archive number; for a limited edition it is the edition number out of the total run.
- The artist's signature — not a printed name, an actual signature, ideally matching the signature on the work itself.
- A date of issue — when the certificate itself was signed, which should correspond to the sale or delivery, not be backdated or left blank.
- A statement of uniqueness — explicit language confirming the piece is original and, where applicable, that no other copies or editions exist.
A document that skips several of these — say, a signature with no date, or no archive number at all — is closer to a decorative label than a piece of provenance documentation. These eight are a general baseline for any serious certificate, not a checklist to match line for line against a specific studio's document. Perfeito Studio's own certificate covers this ground under its own labels — title, series, year, medium, dimensions, a studio image, an internal Archive ID, signature and date, studio identification, care guidance, and a QR code to the work's official page — see the full breakdown on the studio's own Certificate of Authenticity page.
What a certificate does not prove
It is worth being precise about the limits of this document, because overstating what a certificate does is as misleading as underdocumenting a work.
- It does not prove value. A certificate confirms who made the work, what it is, and when — not what it is worth. Value is a separate question, established by appraisal, comparable sales, or the market at the time of resale, and a certificate has no bearing on it.
- It does not predict future provenance. A signed certificate is the start of a paper trail, not a guarantee of what happens to that trail afterward. If the document is lost, if a future owner fails to pass it along, or if a piece changes hands informally, the chain breaks — the certificate at the moment of sale cannot protect against that.
- It does not substitute for insurance or appraisal. Insuring a piece, or establishing its value for a future sale or an estate, typically requires a separate appraisal process. The certificate is one input an appraiser will want to see, not a replacement for their assessment.
Treat the certificate as what it is: a factual record of authorship and description at a specific point in time, issued by the person who made the work.
Certificate vs dossier vs acquisition agreement vs invoice
These four documents get treated as interchangeable, but each does a different job. Confusing them is the most common mistake a first-time buyer makes when organizing their paperwork after a purchase.
- Certificate of authenticity — a short, signed statement identifying the work: title, dimensions, medium, year, archive number, signature, date, and a statement of uniqueness. Its job is authentication, nothing more.
- Curatorial dossier — a longer document describing the work's place within its series, the ideas and materials behind it, and its context in the artist's broader practice. It is interpretive and descriptive, not a legal or financial record.
- Acquisition agreement — the signed document confirming the transfer of ownership and the terms of the sale: price, parties, and the conditions under which the work changed hands. This is the closest thing to a bill of sale in a legal sense.
- Invoice — the payment record: what was charged, when, and through what method. Useful for accounting, customs declarations, and insurance claims, but it says nothing about authenticity or the work's content.
A complete acquisition file has all four. Missing any one of them creates a specific, predictable gap later — an invoice without a certificate cannot prove authorship; a certificate without an invoice cannot prove what was paid.
What to do with the documents afterwards
The paperwork is only useful if it survives as long as the artwork does. A few habits make that more likely:
- Store the physical certificate somewhere it will not be damaged or discarded — with other important documents, not tucked into a drawer near the piece itself where it can be lost during a move or a reframe.
- Digitise everything. Photograph or scan the certificate, dossier, agreement, and invoice, and keep the files somewhere backed up and searchable — by the work's title or archive number, not just "art" in a general folder.
- Pass the full set along at resale or inheritance. A future buyer, an heir, or an appraiser will ask for exactly these documents. Handing over a complete file, rather than the painting alone, is what keeps the provenance chain intact past the point of your own ownership.
If you bought the piece from outside Brazil, keep the shipping and customs paperwork alongside the four documents above — a customs authority or a future insurer may ask for the full set, and having it assembled in one place removes any guesswork later.
From the studio
From the studio
I decided to treat the collection as an archive, not a pile of paintings for sale, from the very first piece I put on the site. That means every work gets an Archive ID — the series code plus the year it was completed, like AP-HOC-2025-001 for Genesis of Flame, the first work in the Heart of Chaos series — before I even know whether it will sell quickly or sit in the collection for months. It is not something I assemble later, on demand, when someone asks.
The practical reason is simple: a certificate improvised at the moment of sale tends to come out incomplete, and a buyer only notices the gap years later — when they want to resell, or when an heir receives the piece with no idea of its origin. Numbering by series and year from the start means that, ten years from now, if someone asks me about AP-HOC-2025-001, I know exactly which piece it is, when it was made, and I can confirm that certificate matches that canvas. For the buyer, that solves a problem that usually only shows up later: having, in hand, a way to prove the piece is genuine — not because they trust me, but because the document is verifiable.
Frequently asked
Is a certificate of authenticity legally required to buy art?
<p>There is no single global law requiring it — requirements vary by country and are not something this guide can state as fact for your jurisdiction. In practice, a signed certificate is standard market practice among serious independent artists and studios, and its absence is a legitimate reason to hesitate before buying, whatever the local legal minimum happens to be.</p>
What if the artist is not yet well known?
<p>Documentation matters more, not less, when an artist has not yet built a long exhibition record. A complete certificate, dossier, and agreement are what let a buyer establish clear provenance from the very first sale, rather than relying on reputation that has not been built yet. Perfeito Studio applies the same numbering and documentation to every work, regardless of how early it falls in the artist's career.</p>
Does a certificate guarantee the work will increase in value?
<p>No. A certificate documents authorship, materials, and description — it says nothing about future value, and no studio or artist can honestly promise appreciation. Value is established separately, through appraisal and the market, at the time you might resell or insure the piece.</p>
What is the difference between an archive number and an edition number?
<p>An edition number identifies one print or cast out of a fixed run of identical or near-identical copies (for example, 4 of 50). An archive number, used for one-of-a-kind originals, identifies a single unrepeated work within an artist's own cataloging system — it confirms the piece is unique, not one of several.</p>
What should I do with the certificate after I receive it?
<p>Store it safely, digitise a copy, and keep it together with the curatorial dossier, acquisition agreement, and invoice for that specific piece. Pass the complete set to any future owner — at resale or through inheritance — since that full file is what keeps the piece's provenance intact after it leaves your hands.</p>
See how Perfeito Studio documents every work
Every piece ships with a signed certificate, a curatorial dossier, a conservation guide, and an acquisition agreement — ask on WhatsApp to see an example before you decide.
Talk to the studio on WhatsApp
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