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BIOP alerts

The BIOP alert system: report a theft or loss, view current alerts and subscribe free of charge.

Updated : October 28, 2026· 4 min read

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An alert network for cultural property

Sports on a Frozen River, Aert van der Neer (ca. 1660)
Sports on a Frozen River, Aert van der Neer (ca. 1660)

When a work is stolen or lost, the speed of information determines the chances of recovering it. BIOP alerts circulate this report to customs, police and accredited auction houses.

This section brings together the active alerts, the archives and the subscription page. For the database of works itself, see the Protection section.

  • Alerts
  • BIOP
  • Theft

BIOP alerts in figures

24 hProcessing time for a report
1,900Alerts published since 2012 (indicative)
48,200Works in the BIOP database
4Alert types

Source: OIMAP General Secretariat.

Three pages

Breakdown

TheftTheft reports
LossLoss or misplacement
Suspicious workDoubtful offer
FakeCounterfeits identified

Indicative breakdown of published alerts by type.

Temple at Naveshera, Kashmir, India, Samuel Bourne (1864)
Temple at Naveshera, Kashmir, India, Samuel Bourne (1864)
Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508)
Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508)
Adoration of the Shepherds, Bernardo Cavallino (c. 1650)
Adoration of the Shepherds, Bernardo Cavallino (c. 1650)

What an alert is for

A BIOP alert is a short, structured message that describes a work, the circumstances of its disappearance and the person to contact. It is sent to a network of qualified recipients, who can thus recognize the object if it is presented to them.

An alert never names a culprit. It informs; it does not judge: any legal action is for the competent national authorities, which the Organization merely supports.

Who receives the alerts

Recipients are customs services, police units specialized in cultural property, accredited auction houses and institutional partners. Each receives the alerts that concern its field of action.

The general public may also subscribe. This voluntary choice widens vigilance, notably among collectors, gallery owners and restorers, who are often the first to see a doubtful object pass through.

The four types of alert

Four categories are published: theft, loss, suspicious work and fake. The first two concern identified objects, reported by their owner or custodian. The other two concern objects encountered on the market.

This distinction helps recipients adapt their response: a theft alert calls for an immediate check, while a fake alert leads rather to vigilance regarding a family of objects.

From report to distribution

The report is submitted through an online form or by the authorities. It is verified by the Protection Directorate, which checks the consistency of the documents and the absence of duplicates in the database. Processing takes twenty-four hours as a rule.

Once validated, the alert is published in the list of active alerts and sent by e-mail to the subscribers concerned. It then remains available in the archives.

The three pages of the section

Organization of the section
PageContentFor whom
Active alertsList of current alerts, filterableGeneral public
Alert archivesClosed, recovered or withdrawn alertsResearchers, buyers
Subscribe to alertsFree registration by e-mailProfessionals, collectors
ReportFiling of a theft or lossOwners, authorities

Milestones

  1. Launch of the BIOP

    The database of stolen works goes online.

  2. E-mail alerts

    First subscription free for professionals (indicative).

  3. Digital alerts

    Alerts are linked to digital certificates (indicative).

  4. 23 operations

    Alerts feed into coordinated operations.

Hercules and the Hydra (late 1500s-early 1600s)
Hercules and the Hydra (late 1500s-early 1600s)
The Four Seasons, Kano Tan’yū (1668)
The Four Seasons, Kano Tan’yū (1668)
Egypt & Nubia, Volume III, No. 8: Mosque of Sultan Hassan, Cairo, Louis Haghe (1842–49)
Egypt & Nubia, Volume III, No. 8: Mosque of Sultan Hassan, Cairo, Louis Haghe (1842–49)

Act quickly

Alert or complaint

Portrait of a Man, Gustave Caillebotte (1880)

BIOP alert

Network information
  • Rapid distribution
  • Free
  • No legal effect of its own

Complements the complaint.

Portrait of Isabella Brant, Peter Paul Rubens (c. 1620–25)

National complaint

Judicial act
  • Filed with the police
  • Opens an investigation
  • Condition of many insurance policies

Remains essential.

Receiving and using an alert

  1. Subscribe

    Choose the alert types.

  2. Read the message

    Identify the work and its distinguishing features.

  3. Compare

    Match against the objects in your possession.

  4. Report

    Contact the Protection Directorate if the object is recognized.

Before buying a work

Glossary

BIOP
Database of stolen and lost works managed by the Protection Directorate.
Active alert
Ongoing alert, the work not having been recovered.
Suspicious work
Object offered under conditions that raise doubt.
Subscriber
Person registered to receive alerts.

Limits and responsibilities

The system relies on the accuracy of the information provided. A deliberately false report engages the responsibility of its author, and the Organization may withdraw an alert if the documents no longer justify it.

Reporting a theft or loss is free of charge. The Organization nevertheless recommends filing a complaint with the national authorities, which strengthens the value of the alert.

Frequently asked questions

Are alerts paid?

No, consultation, subscription and reporting are free.

Who can report a theft?

The owner, their representative or a national authority.

Does an alert replace a complaint?

No, the two steps complement each other.

Where do I subscribe?

Useful documents

Contacts

Eighteen Views of Rome: The Piazza Farnese (recto), Lievin Cruyl (1664)
Eighteen Views of Rome: The Piazza Farnese (recto), Lievin Cruyl (1664)
General SecretariatParis — Headquarters+33 1 00 00 00 00secretariat@oimap.exampleMonday to Friday, 9 am – 5 pm

Subscribe to alerts

Jonah Under the Gourd Vine (280–90 CE)

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