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

Provenance disputes

Who is the rightful owner? Principles, evidence and TAO decisions when the origin of a work is contested.

Updated : October 28, 2026· 3 min read

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The history of a work is a title deed

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

A work reappears on the market; a family claims it was stolen from them eighty years ago; the buyer, in good faith, produces an invoice. To whom does it belong? Provenance disputes raise the most sensitive question in arbitration: title.

They account for 22% of the requests received. The provenance chamber handles them with lawyers, historians and archivists, in a spirit of seeking an equitable solution.

This section presents the principles, the evidence and the decisions.

  • Provenance
  • Title
  • Good faith

Provenance disputes in figures

22%Share of requests
14 monthsAverage duration
61%Disputes with archival research
44%Amicable agreements

Source: Registry of the OIMAP Arbitral Tribunal.

Three pages

Breakdown

Historical spoliation30%
Successions28%
Old theft22%
Uncertain title20%

Origin of the disputes.

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Seal Color Box (1662–1722)
Seal Color Box (1662–1722)
The Triumph of Mordecai, Lucas van Leyden (1515)
The Triumph of Mordecai, Lucas van Leyden (1515)

A delicate balance

The law protects both the dispossessed owner and the good-faith buyer. The balance varies from country to country: some protect the buyer after a certain period, others maintain the original owner's right. The tribunal determines the applicable law and then examines the facts.

Beyond the law, the arbitrators pay attention to equity and to international principles on the restitution of spoliated property. Negotiated solutions are frequent: compensation, sharing, restitution coupled with compensation.

Archival investigations

Most of these disputes are decided on historical evidence: inventories, invoices, correspondence, old photographs, sale catalogues, insurance documents, files of past restitutions. The tribunal may appoint a historian or archivist to reconstruct the chain of ownership.

The research takes time: the average duration reaches fourteen months. The parties are well advised to put their file together very early and to request protective measures if the work risks being sold.

Sensitivities

Provenance disputes touch on personal and collective history: spoliation, war, colonisation. The tribunal ensures respectful treatment, avoids needlessly hurtful debates and, where possible, favours an amicable settlement.

The parties may request a reinforced closed-door hearing and the appointment of an arbitrator or mediator familiar with these issues.

Common questions of title

Four situations
SituationQuestionKey elements
SpoliationReturn to the owner?Proof of dispossession
SuccessionWho is the heir?Death certificates, will
Old theftLimitation?Applicable law
Doubtful titleProof of ownership?Invoice, inventory

Milestones

  1. Spoliations

    Origin of many disputes.

  2. Washington Principles

    International guidance.

  3. Creation of the TAO

    Dedicated chamber.

  4. More than 300 cases

    Accumulated experience.

Arrival of the "Southern Barbarians" (c. 1600)
Arrival of the "Southern Barbarians" (c. 1600)
Chemin de fer de Toulouse à Bayonne. Pont de l'Aran (en trois arches de 17m d'ouverture chacune). Situation des travaux au 21 juillet 1861, Édouard Baldus (1861)
Chemin de fer de Toulouse à Bayonne. Pont de l'Aran (en trois arches de 17m d'ouverture chacune). Situation des travaux au 21 juillet 1861, Édouard Baldus (1861)
Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810)
Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810)

Protective measures

Restitution or compensation

Letter Box, Ogata Kōrin (1700s)

Restitution

Return of the work
  • Symbolic reparation
  • Often claimed
  • Buyer compensated in some cases

Case of proven spoliation.

Seven Jeweled Mountain (late 1800s)

Compensation

Sum or sharing
  • Work retained
  • Negotiated agreement
  • Faster

Balanced solution.

Handling a provenance dispute

  1. Gather

    Archives.

  2. Have appraised

    Historian.

  3. Refer

    Application.

  4. Negotiate

    Mediation.

  5. Decide

    Award.

Provenance file

A lawyer

Sweet Melancholy, Joseph-Marie Vien (1756)
« In these cases, the evidence is an investigation. It sometimes takes two years of research to reconstruct a ten-page path. »
Me Clara Delmas, lawyer

Vocabulary of provenance

Provenance
History of the ownership of a work.
Title
Right of ownership.
Good faith
Legitimate ignorance of the defect in title.
Spoliation
Forced dispossession.

Frequently asked questions

Who may act?

The owner or the heirs.

What time limit?

Depending on the applicable law.

Is the work blocked?

By interim measure, if requested.

Where can I see the principles?

Useful documents

Contacts

The Pyramid of Cestius, Rome, Michiel van Overbeek (c. 1650–80)
The Pyramid of Cestius, Rome, Michiel van Overbeek (c. 1650–80)
Registry of the Arbitral Tribunal (TAO)Paris — Head Office+33 1 00 00 04 00greffe.tao@oimap.exampleMonday to Friday, 9 a.m. – 5 p.m.

Read the principles

Seal of Doge Michele Steno (reverse) (1400–1409)

Title and good faith.

Principles
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