A report that protects all parties

Forged certificate, fabricated provenance, misappropriated OIMAP number, counterfeit artwork: every report strengthens the protection of the market. The form on this page allows you to submit the facts to the Organization, confidentially if you wish.
Before reporting, verify the document by number or by QR code. For a stolen item, use the BIOP report instead.
Reporting a forgery in figures
Source: OIMAP General Secretariat.
What can be reported
Three situations are covered: a document that imitates an OIMAP certificate, an OIMAP number used for the wrong artwork, or an artwork for which there are serious grounds to believe it is counterfeit.
Commercial disputes over the quality of an authentic artwork fall under a different procedure, presented in the arbitration section.



Useful information
Describe the facts precisely: date, place, persons involved, nature of the document, OIMAP number if any. Attach photographs, a copy of the document and, if possible, the result of the online verification.
The better documented the report, the faster it can be handled. However, a mere suspicion may also be reported: the Secretariat's experts will sort it out.
Preserving the evidence
Never destroy or alter the suspect document. Keep the original, the messages exchanged with the seller, invoices and screenshots. These items may be passed on to the competent authorities.
Avoid confronting the person concerned yourself. A discreet report preserves the possibility of an investigation.
Handling by the Organization
The service receives the report, acknowledges receipt within twenty-four hours (indicative), then analyses the document with the Certification Directorate. If the forgery is confirmed, the number concerned is revoked or marked as misappropriated in the Registry.
The Organization may then alert the national authorities and, where appropriate, circulate an alert to accredited auction houses, without mentioning the name of the person reporting.
Information to provide
| Element | Example | Required |
|---|---|---|
| Nature of the document | Certificate of authenticity | Yes |
| OIMAP number | OIMAP-2026-004281 | If available |
| Circumstances | Sale offer, seller's email | Yes |
| Attachments | Photographs, copies | Recommended |
| Contact details | Contact email | Optional |
Milestones
- Report
The form is submitted.
- Acknowledgement
The Secretariat confirms receipt.
- Analysis
Comparison with the registries.
- Follow-up
Revocation or referral to the authorities.
Theft or loss: a separate service



Anonymous or named report

Anonymous
No contact details- Maximum protection
- No reply possible
- Limited follow-up
Discreet.

Named and confidential
With contact details- Exchange possible
- Identity protected
- File follow-up
Effective.
Report a fake
- Gather the evidence
Document, messages, photographs.
- Verify online
By number or QR code.
- Fill in the form
With the precise facts.
- Await the acknowledgement
Within twenty-four hours.
Before sending
An accredited expert (example)

« Reports from collectors allow us to identify recurring patterns, for example the same forged certificate presented in several countries. »
Glossary
- Fake
- Forged document or object.
- Counterfeiting
- Imitation of an artwork presented as authentic.
- Misappropriation
- Improper use of an identifier.
- Requisition
- Official request from a judicial authority.
Confidentiality and protection
The person reporting may request anonymity with respect to third parties. Their identity is passed on only to judicial authorities and only upon requisition. Data are kept for the time necessary for the investigation.
A report made in good faith does not engage the liability of its author, even if the investigation ultimately concludes that there was no forgery.
Frequently asked questions
Is my report public?
No, it is handled confidentially.
Do I have to prove the forgery?
No, a serious suspicion is sufficient.
How long for a reply?
An acknowledgement within twenty-four hours, then an analysis depending on complexity.
How do I contact the Secretariat?
Through the online form.
Useful documents
Contacts

BIOP alerts
Image credits (17)
- The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530) — Cleveland Museum of Art, CC0 1.0
- Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495) — Cleveland Museum of Art, CC0 1.0
- The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855) — Cleveland Museum of Art, CC0 1.0
- Portrait of a Couple (c. 1580–88) — Cleveland Museum of Art, CC0 1.0
- Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840) — Cleveland Museum of Art, CC0 1.0
- Relief Portrait Head of the Emperor Balbinus (c. 238 CE) — Cleveland Museum of Art, CC0 1.0
- Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815) — Cleveland Museum of Art, CC0 1.0
- View of the Château of Pierrefonds, François-Louis Français (c. 1870) — Cleveland Museum of Art, CC0 1.0
- The Calumny of Apelles, Giorgio Ghisi (1560) — Cleveland Museum of Art, CC0 1.0
- Bidri Hookah Bowl with Roses (c. 1650s) — Cleveland Museum of Art, CC0 1.0
- Lace Towel End (c. 1700s–1800s) — Cleveland Museum of Art, CC0 1.0
- The Grotto of Posillipo, Hubert Robert (c. 1769) — Cleveland Museum of Art, CC0 1.0
- Twilight in the Wilderness, Frederic Edwin Church (1860) — Cleveland Museum of Art, CC0 1.0
- Sports on a Frozen River, Aert van der Neer (ca. 1660) — The Metropolitan Museum of Art, CC0 1.0
- The Doge's Palace, Venice, Richard Parkes Bonington (1826) — Cleveland Museum of Art, CC0 1.0
- Châteauvieux-sur-Suran, Antoine-Claude Ponthus-Cinier (1848) — Cleveland Museum of Art, CC0 1.0
- Nymphs and a Satyr (Amor Vincit Omnia), Nicolas Poussin (c. 1625–27) — Cleveland Museum of Art, CC0 1.0
Cleveland Museum of Art · CC0 1.0
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