Det stykke pap, der ikke er et bevis: Sådan læser du et ægthedscertifikat uden at blive snydt

Everybody thinks the certificate is the finish line. You've read the listing, you like the picture, and then a piece of card arrives — gold border, serif type, a signature that swoops like it means business — and something in your lizard brain relaxes. Ah. Official. Case closed.

Case very much not closed. I want you to look at that card the way a detective looks at a confession that arrived a little too fast: not as the answer, but as a claim that now needs checking. Because here is the sentence nobody prints on the certificate itself, in gold or otherwise: a certificate of authenticity is a written statement by the seller. That's it. That's the whole legal weight of the object. Not a court. Not a museum. Not some silver-haired panel of experts nodding gravely. The person who wants your money wrote it, about their own goods, and had it printed on nice paper.

The Lie You've Been Told, and the 30-Second Truth

Everyone treats the certificate like it's the ending. It's the opening. A wall label at a museum is expensive to fake — you'd have to fool curators, conservators, and a public paper trail. A certificate of authenticity requires a printer and an embossing stamp, both of which you can buy this afternoon. The most official-looking document in the whole transaction is, mechanically, the single easiest thing in it to counterfeit.

Exhibit A and Exhibit B: Put Them Side by Side

Received wisdom: a certificate is a certificate, they're all more or less the same reassurance in different fonts. Let's put two of them on the table and see how fast that falls apart.

Certificate A, in full: "This artwork is certified authentic. A beautiful addition to any collection." Heavy card, gold border, no named issuer, no way to reach anyone, no explanation of how the writer knows anything they're claiming. It could be stapled to any print by anyone. Nothing on it would need to change.

Certificate B is plain paper, no border, and it says: "Issued by [named dealer, registered business, address, phone]. Title: [specific]. Artist: [named]. Medium: giclée print, pigment ink on cotton rag. Edition: 45 of an edition of 150; three artist's proofs exist in addition. Signed in pencil, lower left margin. Based on the dealer's direct commission of the edition from the artist in 2023."

Strip the ornament off both and watch what's left. Certificate A has nothing — take away the gold border and there is, literally, no content. Certificate B has everything that matters: a named issuer, a specific and checkable claim, and a stated basis for that claim. The card stock was never the evidence. The name and the specifics were the evidence, the whole time, and one certificate has them and the other is decoration.

Why Two US States Legislated This Exact Trick Decades Ago

This isn't a new con. Mail-order print dealers were running Certificate A on paper customers before the internet existed, and California and New York got tired of it. California's Fine Prints Act and New York's Arts and Cultural Affairs Law both took the same approach: rather than banning vague certificates outright, they specified, by statute, exactly what a certificate for a print or photograph must disclose.

New York's statute adds a detail worth remembering on its own: when a dealer hands over a certificate, the law treats the facts in it as a warranty — a promise the dealer can be held to, not a description they can shrug off later. And the remedy isn't symbolic. Under California law, a dealer who sells without the required certificate, or with false information in it, owes the buyer their money back with interest — and if it was deliberate, three times that amount, plus legal costs. That's a very good reason for an honest dealer to get the certificate right, and it's precisely the incentive an anonymous seller of Certificate A has engineered around, by making sure nobody can ever be identified as the one who wrote it.

Applying all of this costs you nothing but four minutes of actually reading the thing. Who's the issuer, and can they be reached? What exactly is the medium? What exactly is the edition? How is it signed? And the single most revealing line, when it's present: what is the basis for the claim. "Commissioned directly from the artist" or "compared against the catalogue raisonné entry" is doing real work. A certificate that only asserts, and never explains how it knows, is not.

The Twist: A Perfect Certificate Still Hasn't Proven the Artist Exists

Here's the part that trips people up even after they've done everything right. Say a certificate passes every test above — named issuer, specific claims, a clear statement of its own basis. What has it actually proven? That a real, identifiable business is willing to put its name behind a specific claim and can be sued if it's false. Genuinely valuable. But it has not proven that the artist named on it is anything more than a name the dealer chose to type. A beautifully constructed certificate for a completely fictional artist is still fiction — just fiction with legal exposure attached. Verifying the paperwork and verifying the person it describes are two separate jobs, and passing the first doesn't excuse you from the second.

Checking the Artist Against a Record the Seller Doesn't Control

For a historical or already-established name, go outside the seller's own website entirely. A general art encyclopedia is the easiest starting point — WikiOO, for instance, documents several hundred thousand artworks and tens of thousands of artist biographies, free to search, with the artist and the specific composition checkable independently of each other. Beyond that sit the authority files that museums, libraries and auction houses themselves consult to settle disputed names — the Getty's Union List of Artist Names chief among them, cross-linked through Wikidata to library and national-collection records. An artist absent from all of these, where their claimed period and reputation would normally guarantee inclusion, is either genuinely obscure in a way worth asking the seller to explain, or is not who the listing says.

For a living artist, no database will help you, and that's honest — reputations take years to accumulate and a working artist may not have one yet. What substitutes for a database is continuity that would be tedious to fake: years of posted work including the ordinary pieces and the abandoned ones, not just the highlights reel; photographs and video of work in progress, in a studio recognisable across many posts by the same easel, the same floor, the same light; an exhibition history at venues you can actually telephone and get confirmed. A portfolio that looks complete and professional overnight isn't automatically suspicious — but it also isn't yet the kind of evidence that years of unglamorous documentation is.

The Scam Wearing a Real Artist's Face

There's a specific, now-common version of this worth naming directly, because naming it defuses it. An account is built by copying a real artist's portfolio and biography, with the username altered by a character or two — a doubled letter, a numeral swapped in for a word. This account contacts a buyer directly, rather than waiting to be found. Urgency follows fast: a piece "on hold," a discount expiring within the hour. And sooner or later, the request is to move payment off the platform where the conversation started, onto a channel that can't be reversed.

Two things kill this pattern stone dead. First: never complete any part of the transaction inside the conversation that initiated it. Close it, find the artist's own site or verified account independently, and start again from there. If both routes genuinely lead to the same seller, you've lost two minutes. Second belongs to the payment stage rather than the identity stage — a different, and equally important, article's worth of caution.

"From a Private Collection" Is Not an Answer

One more question belongs in this stage, especially for anything with real age or a documented ownership history behind it: where has this object been since it left the artist's hands, and what actually supports each step of that journey? "From a private collection," offered with no date and no document, is not provenance — it is the absence of provenance, dressed up to sound like its presence. A credible answer names prior owners, or at minimum gives dates and invoices, even where a current owner's name is withheld for privacy.

For anything of real value, there's a free public backstop worth using regardless of how convincing the seller's own story is: a stolen-art register. INTERPOL maintains a public database, searchable through a free app, of tens of thousands of items recorded as stolen by police worldwide. It exists because the alternative — buying in good faith something that turns out to be stolen — can mean handing it back to its rightful owner later with no compensation, whatever the seller told you. A few minutes against that register is cheap insurance against the single worst outcome in this entire process.

Where We Stand on This

Full disclosure, since a comparison table that only flatters the writer is a brochure, not an article. On OriginalUniqueArt.com, every work is a genuine one-of-one original — sold once and withdrawn from sale the moment it's bought — from a roster of roughly 25 exclusive in-house artists, and a certificate is optional, can be issued as an on-chain NFT record, and names the specific piece it covers. That's the Certificate B model: named issuer, specific claim, checkable basis. It is a small catalogue — a few hundred works against millions on the open marketplaces — and that's the honest trade-off: scarcity and unrepeatability, not a huge talent pool to browse.

Read that table for what it actually says, not for who comes out looking best. A reproduction seller can't fake an authorship claim it isn't making — that's a different kind of honesty than a certificate. A one-of-one original seller can, which is exactly why the certificate matters so much more on that side of the table, and exactly why it should name a real person you could, in principle, sue.

Frequently Asked Questions

What is a certificate of authenticity, legally?

A written statement by the seller, attesting to authorship. It is not issued by a court, a museum, or any neutral party. It is exactly as trustworthy as whoever wrote it — no more.

What must a real certificate say?

Under California's Fine Prints Act and New York's Arts and Cultural Affairs Law: the named issuer and how to reach them, the title and artist, how it's signed, the edition size and whether it's closed, the medium, and the basis for the claim — how the issuer knows what they're asserting.

What happens if a dealer lies on a certificate?

Under California law, the buyer gets their money back with interest, and if the violation was wilful, three times that amount plus legal costs. That's why a legitimate dealer signs their name to a certificate, and why an anonymous seller never does.

How do I check if an artist actually exists?

For a historical or established artist, check them against a record the seller doesn't control — a general art encyclopedia such as WikiOO, or an authority file like the Getty's Union List of Artist Names. For a living artist, look for continuity: years of ordinary posted work, a recognisable studio, an exhibition history you can telephone and confirm.

What is the classic art-seller impersonation scam?

An account copies a real artist's portfolio and biography with the username altered by a character or two. It contacts a buyer directly, manufactures urgency — a piece "on hold," a discount expiring within the hour — and pushes payment onto a channel that can't be reversed. Close the conversation and find the artist's verified site independently instead.

How do I check if an artwork is stolen?

INTERPOL maintains a free, public, searchable database of tens of thousands of items recorded as stolen by police worldwide, accessible through the free ID-Art app. A clean result isn't proof of clean title, but a hit is a hard stop.

The Verdict

The certificate was never the finish line. It was the opening statement in a case you're allowed to cross-examine. Ask who wrote it. Ask how they know. Check the artist against a record the seller can't edit. Run the stolen-art registers for four free minutes. Do all of that, and you've done more due diligence than most auction-house interns manage before lunch.

And the next time somebody hands you heavy card stock with a gold border and nothing else on it, remember what it actually is: not proof, not a court document, not a museum label. A claim. Written by the one person in the room with the most reason to want you to stop asking questions.

Keep asking them.

Sources

• Certificates of Authenticity: A Complete How-To Guide — Format
• California Civil Code § 1745 — Remedies and Penalties, Sale of Fine Prints (Justia)
• California Civil Code §§ 1742–1744.9 — Full Disclosure in the Sale of Fine Prints (Justia)
• New York ACA § 15.01 — Full Disclosure in the Sale of Visual Art Objects Produced in Multiples (Justia)
• Art Law on Consumer Protections for Purchasers of Prints and Multiples — Artnet News
• Union List of Artist Names (ULAN) — Getty, via Collections Trust
• Union List of Artist Names ID (P245) — Wikidata
• About — WikiOO, The Encyclopedia of Fine Arts
• Art Provenance: What It Is and How to Verify It — ArtBusiness.com
• INTERPOL Stolen Works of Art Database
• INTERPOL ID-Art mobile app
• How do blockchain certificates work — Verisart Help Center
• Don't fall for this Instagram art scam — Fox News
• F.A.Q.: Certificates of Authenticity — Securing Value for Elite Collectors — our own support-desk explanation of how a certificate is prepared and what it documents.

Data as of 11 August 2026. Certificate and returns policy figures for named vendors reflect each operator's own published policy, checked directly.