Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Home

The ten good practices

The detail of the Charter's ten commitments, from provenance to the reporting of anomalies.

Updated : October 28, 2026· 3 min read

Ten actions, one aim

Adoration of the Shepherds, Bernardo Cavallino (c. 1650)
Adoration of the Shepherds, Bernardo Cavallino (c. 1650)

The Charter's ten practices follow the order of an acquisition, then of responsible possession. Each is briefly explained below, with its rationale and the means of putting it into effect.

To download the full text, see the page Download the Charter; for implementation, the practical guide.

  • Practices
  • Provenance
  • BIOP

The ten good practices in figures

10Practices
3Before purchase
48,200Works searchable in BIOP
24 hAlert in case of theft

Source: OIMAP General Secretariat.

Breakdown

VerifyProvenance, certificate, BIOP
DocumentInvoices, insurance, training
ActDeclare, return, cooperate, report

Indicative thematic breakdown.

1 to 4: before buying

The first practice is to verify provenance: who owned the work, since when, under what conditions. The second is to require a certificate of authenticity or provenance. The third is to keep invoices and deeds. The fourth is to consult BIOP before any purchase.

These four actions greatly reduce the risk of acquiring a stolen or forged item. They take little time compared with the cost of a forced restitution.

Bidri Hookah Bowl with Roses (c. 1650s)
Bidri Hookah Bowl with Roses (c. 1650s)
Figure (kiteki) (late 1800s–mid-1900s)
Figure (kiteki) (late 1800s–mid-1900s)
Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495)
Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495)

5 and 6: declare and protect

The fifth practice is to declare exports and comply with the licences required by States. The sixth is to insure and document works: photographs, measurements, condition, history.

A well-documented item is easier to recover if stolen and simpler to sell afterwards, because its provenance is established.

7 and 8: act in case of a claim

The seventh practice calls for returning in good faith an item recognized as stolen or illicitly exported, relying on mediation if necessary. The eighth is to cooperate with the authorities in charge of the investigation.

This attitude protects the collector's reputation and often opens the way to a fair settlement, with compensation where good faith is established.

9 and 10: train and report

The ninth practice is to train your teams: curators, registrars, assistants, brokers. The tenth is to report any anomaly: suspect document, abnormally advantageous offer, unknown seller.

Reporting is done through the dedicated page. Training can draw on the courses of the Academy.

Practices and tools

Each practice, its tool
PracticeOIMAP toolWhere to find it
Verify provenanceProvenance certificateDesk
Require a certificateCertificates of authenticityDesk
Check BIOPSearchable databaseProtection
Declare exportsImport/export licenceDesk
Report an anomalyReporting formHome

Milestones

  1. Before purchase

    Provenance, certificate, BIOP.

  2. At purchase

    Invoices, declarations.

  3. Possession

    Insurance, documentation.

  4. If difficulty arises

    Restitution and cooperation.

Documenting is better than justifying

Album with Views of Rome and Surroundings, Landscape Studies, page 23a: Castle Saint Angelo, Rome, Franz Johann Heinrich Nadorp (c. 1830s-70s)
Album with Views of Rome and Surroundings, Landscape Studies, page 23a: Castle Saint Angelo, Rome, Franz Johann Heinrich Nadorp (c. 1830s-70s)
Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508)
Farmhouse on the Slope of a Hill, Fra Bartolommeo (c. 1508)
Portrait of a Couple (c. 1580–88)
Portrait of a Couple (c. 1580–88)

Preventive and corrective practices

Gathering among the Members of Office Censor-General (1700s)

Preventive

Practices 1 to 6
  • Reduce risk
  • Inexpensive
  • To be done at purchase

To be prioritized.

Mortar, Wenzel Jamnitzer I (c. 1550–1560)

Corrective

Practices 7 to 10
  • Activated when difficulty arises
  • Preserve reputation
  • Facilitate settlement

As a complement.

Applying the ten practices

  1. Prepare the list

    Before purchase.

  2. Verify

    Provenance, certificate, BIOP.

  3. Document

    Keep all supporting documents.

  4. React

    Report or return if needed.

Last-minute check

A curator (example)

Portrait of a Man, Gustave Caillebotte (1880)
« The ten practices fit on one page. That is what makes them useful: they are easy to remember and can be applied the same day. »
Camille Rousseau, foundation curator (example)

Glossary

Provenance
History of the successive owners of an item.
BIOP
OIMAP database of stolen or lost works.
Export licence
Authorization for an item to leave a country.
Good faith
Absence of knowledge of a defect in title.

The limits of the Charter

The Charter does not replace the advice of a lawyer when the situation is complex: inheritance, an item of ancient origin, a work from excavations. It gives principles, not ready-made solutions.

It presupposes good faith. It does not protect a buyer who wilfully ignores obvious warning signs.

Frequently asked questions

Must I apply all ten practices together?

Ideally yes, but each already offers protection.

Is the BIOP check free?

Yes, consultation is public.

What should I do if the work is flagged?

Suspend the purchase and contact the Desk.

Where can I find a template record sheet?

Useful documents

Contacts

The Grotto of Posillipo, Hubert Robert (c. 1769)
The Grotto of Posillipo, Hubert Robert (c. 1769)
General SecretariatParis — Headquarters+33 1 00 00 00 00secretariat@oimap.exampleMonday to Friday, 9 am – 5 pm

Download the Charter

Egypt and Nubia, Volume I: The Great Sphinx, Pyramids of Gezeeh, Louis Haghe (1846)

The full text in PDF.

Download
Image credits (17)
▲