Verify by OIMAP number

The number consists of the prefix OIMAP, the year of issue in four digits and a rank in six digits. The three elements are separated by hyphens. The number OIMAP-2026-004281 thus designates the 4,281st file of the year 2026.

Case does not matter. However, the hyphens must be present, and the leading zeros of the rank must be entered.

The module has an input field and a verification button. After submission, the response appears without reloading the page. No account is needed and no personal data is requested.

To check several documents, restart the entry for each one. A batch check can be requested from the Desk by administrations.

A "valid" result displays the type of document, the date of issue and a brief description of the work. This description should be compared with the actual property: dimensions, technique, signature, inscription.

An "expired" or "revoked" result calls for asking the seller for explanations and checking whether a new document has been issued.

The most frequent errors are confusing the letter O with the digit zero, forgetting a leading zero and swapping two digits. A badly copied number gives an "unknown" result without the document being fake.

Before concluding, reread the number on the original document rather than on a copy or a poor-quality photograph.

Keep the date and result of the check with the purchase file. In the event of a dispute, this record shows that you acted with due diligence, which counts in assessing good faith.

If the result is a cause for concern, report it: the page Report a forgery explains the procedure to follow.