International reference database, fed by INTERPOL National Central Bureaus, UNESCO and ICOM. Image search available via the ID-Art mobile app.

FBI registry of artworks and cultural property reported stolen in the United States and abroad. Mobile app available.

World's largest private database of stolen, looted, counterfeit or disputed items. Paid search service used by auction houses and insurers.

Private database covering thefts, looting, forgeries, disputes, financial liens and loans. Living artists can register their works directly.

One of the largest databases of illegally removed cultural goods. Simplified public search available, professional access on request.

Meta-catalogue aggregating collections from over 400 museums and institutions. Useful for checking if a work is documented in a public collection and detecting unreported presences.

Database and academic resources on crimes against cultural heritage. Academic journal (Journal of Art Crime), case directory, professional training.

US federal programme combating cultural property trafficking. Public list of recent seizures and returns. Covers looted antiquities, stolen objects and cultural property unlawfully imported into the United States.

Open-access database of case notes on cultural property restitution disputes, settled through judicial proceedings or alternative dispute resolution (ADR). Attached documents: judgments, agreements, photographs.

OCBC database: around 110,000 photographs linked to 32,000 files of works reported stolen in France. Visual similarity search engine since 2005. Not publicly accessible; professionals can submit reports via competent authorities.

International registry of objects looted under the Nazi regime, archives, laws and current cases, aggregating data from dozens of countries.

Inventory of objects looted by the Einsatzstab Reichsleiter Rosenberg in occupied France and Belgium, processed through the Jeu de Paume from 1940 to 1944.

Inventory of the Musees Nationaux Recuperation, including works with incomplete history for the 1933-1945 period. Accessed via the POP platform.

Reference German database of objects confiscated from victims of Nazism and goods displaced by war. Also covers items in Austria, Switzerland and Israel.

Research database complementary to Lost Art. Documents four fields: Nazi looting, war booty, GDR and Soviet zone expropriations, and colonial contexts.

Photographic database of works intended for the Fuhrermuseum planned by Hitler in Linz. Key tool to identify works collected by Hans Posse and Hermann Voss.

Database of works processed at the Allied central depot in Munich after 1945, where the Allies photographed, inventoried and restituted confiscated goods.

Public database of the Cornelius Gurlitt estate with color-coded categorisation (green, yellow, red) by likelihood of looting.

Digital platform unifying archival evidence of theft of Jewish cultural property, scattered across archives worldwide. Launched in December 2025.

Historical portal listing objects in US museum collections with provenance gaps for 1933-1945. Archived since July 2024 but still consultable.

Austrian database of objects in federal collections with doubtful provenance. The National Fund assists heirs in identifying goods confiscated under the Nazi regime.

German federal database of artworks, books and numismatic collections transferred by the Allies between 1948 and 1952 for restitution purposes and remaining in federal custody.

Database of artworks in Czech public collections that belonged or may have belonged to Holocaust victims. Established under Law 212/2000.

Database of objects identified in Czech public collections as confiscated during the Second World War and not restituted. Searchable by owner name or artist.

Only Polish national registry of movable cultural property lost during the Second World War. Catalogue of recovered works and ongoing restitution procedures.

Composite database including German sales catalogues 1930-1945, collectors files, and sales catalogues from Belgium, France, Germany, UK, Netherlands and Scandinavia from 1650 to 1945.

Specialised database on shipping goods (lifts) confiscated by the Gestapo at German ports from 1939 onwards, which belonged to Jewish families in the process of emigrating.

Indexed and digitised documents on Nazi looting: seizure orders, inventories, photographs, claim forms 1939-1961. Searched via Discovery.

Digitised database of the commercial archives of one of the most important German art dealers (1890-1939). Detailed access to a large number of significant paintings.

Auction sales catalogues 1930-1945 covering Germany, Austria, Belgium, France, Italy, Netherlands, Poland, Switzerland and Czech Republic. Searchable by house, artist or work.

Registry of Nazi-era provenance declarations made by AAMD member museums for works acquired after 1932 and before 1946, or with a documentary gap during that period.

British organisation representing families of Nazi looting victims. Case database, restitution decisions, legal resources. Entry point for heirs seeking formal assistance.

Dutch advisory committee issuing opinions on restitution claims for works looted under Nazism and held in Dutch national collections. Searchable database of published opinions and case files.

International portal aggregating archives from dozens of institutions relating to cultural property looted under Nazism: Nazi documentation, recovered artworks inventories, claims files, dealer archives. Created pursuant to the Washington Principles (1998).

Online portal for the Nederlands Kunstbezit collection: approx. 4,700 works (paintings, drawings, prints, ceramics, silverware, furniture) confiscated during WWII, repatriated from Germany and remaining in Dutch state custody. Searchable by provenance, artist or object type.

Archives on 17.5 million victims of Nazism. Essential for establishing the identity of dispossessed owners, their deportation dates and addresses. Does not directly list objects but identifies legitimate owners and their heirs.

Database of names of Shoah victims, documents and photographs. Useful for identifying owners, verifying persecution dates and tracing heirs. Repository of documentation on looting and dispersed collections.

USHMM digital collections: documents, testimonies and archives relating to Nazi confiscations. Includes Monuments Men reports, Allied collecting point documents and archives on Nazi-era dealers and gallerists.

German federal archives covering confiscations, forced sales and property transfers under the Third Reich. Includes NSDAP archives, ministerial records and Gestapo files. Partial online access; on-site consultation required for many holdings.

Austrian commission specialising in provenance research for property looted during the Nazi regime. Research reports, databases of identified objects, Austrian restitution case law, and provenance research glossary.

Portal of 700 European Jewish archive institutions in 27 countries. Archival holdings descriptions to locate primary sources useful for provenance research. Contains no object data but identifies relevant archive repositories.

First comprehensive catalogue of objects looted from the Kingdom of Benin during the 1897 sack, aggregating data from dozens of institutions across about twenty countries.

Dutch platform bringing together collections from colonial contexts: Suriname, Indonesia, Sri Lanka, South Africa, Aruba, Curacao. Linked to the official Restitution Committee.

Online catalogue of the museum's ethnographic collections, a large part of which originates from the Democratic Republic of Congo. Frames bilateral provenance research.

Federal registry of NAGPRA notices (1990): inventories of human remains and funerary objects by museum and tribal affiliation. Search by tribe, state or institution.

Platform documenting restitution cases and European institutional positions regarding objects of African origin. Critical monitoring, restitution news, institutional policy comparisons.

Catalogue of over 4 million objects, a large part of which originates from colonial contexts. Useful to check if an object is referenced in the collection, consult published provenance data and identify contested historical acquisitions.

Over 450,000 objects from African, Asian, Oceanian and American civilisations. Provenance data, acquisition histories and research notes available online. Reference for objects from French colonial contexts.

Archaeological and anthropological collections including many objects from colonial and ethnographic contexts. Active provenance research, particularly for Pacific and African collections. Provenance data published online.

Australian repatriation programme for Aboriginal and Torres Strait Islander heritage. Database of objects and human remains repatriated or in the process of repatriation. Reference for objects of Australian Indigenous origin.

Repatriation programme for Māori and Moriori ancestral remains and taonga (cultural treasures). Database of objects in the process of repatriation. Reference for objects of Māori or Pacific origin.

Label system (TK Labels, BC Labels) signalling cultural rights and protocols associated with Indigenous collections in institutions. Identifies cultural obligations and source communities to contact. Adopted by many international museums and archives.

Directory of researchers and ongoing catalogues raisonnes projects, with contacts and progress statuses. Reference tool for identifying authorities on a given artist.

Digital catalogues raisonnes (Monet, Renoir, Degas, Wesselmann) and 11,000 digitized pre-1945 sales catalogues. Reference for verifying a work's inclusion in an artist's authenticated corpus.

Geneva reference: comprehensive index of all catalogues raisonnés and critical catalogues of artists born between 1780 and today. Covers painting, sculpture, works on paper and contemporary media. Edited by Marc Blondeau and Thierry Meaudre.

Non-profit platform publishing digital catalogues raisonnés in partnership with institutions (WPI, artist foundations, museums). Ongoing Degas catalogue, Gauguin post-1889, Wesselmann, Franz Kline. Continuously updated.

Online index of print catalogues for European and American artists, extended to drawings and photographs. Entries for prints, publishers, drawings, photographs and Japanese prints.

Complete online catalogue of the Museo Larco, the first Latin American museum to have placed its full pre-Columbian collection in open access.

Categories of cultural objects vulnerable to looting and trafficking, by world region (20+ lists). Reference tool for customs, police and art market professionals.

Documentation archive of Syrian cultural heritage threatened or destroyed by conflict. Georeferenced photographs, site records, damage reports. Reference tool for identifying objects potentially looted from Syrian sites.

Research and investigative project on online antiquities trafficking (social media, marketplaces). Database of over 26,000 screenshots, videos and images of looted antiquities since 2012, primarily covering the Middle East and North Africa.

Database of national cultural heritage laws. Allows verification of a country of origin's export legal framework, protected property lists and notification obligations. Essential for assessing the legality of an export.

Satellite-georeferenced database of endangered archaeological sites in the Middle East and North Africa. Essential for evaluating the geographical context of looting for an object of uncertain origin.

Academic database on illicit trafficking of cultural property: documented case studies, profiles of convicted traffickers, criminal network analyses. Useful for evaluating trafficking routes by region of origin.

World Customs Organization platform for identifying and intercepting cultural property at borders. Integrates the UNESCO-WCO model export certificate. Used in Operation Pandora (INTERPOL/Europol).

British Museum e-learning platform and database to combat trafficking of Egyptian and Sudanese antiquities. Lists legal, illegal and unknown-status objects for cross-referencing and identification.

Art and rare book sale catalogues from the late 16th century to the present, indexed by auction house, location, vendor and date. Complements Lugt for sales not listed in the Répertoire.

30 million auction prices and detailed results for 635,000 artists. Archive of over 210,000 sale catalogues. Market indices and per-artist reports.

AI-powered art market analytics platform. Aggregates sale results from Christie's, Sotheby's, Phillips, Bonhams, Dorotheum, Artcurial and Bruun Rasmussen. Market trend indicators and per-artist price alerts.

Online edition of Frits Lugt's Répertoire listing over 100,000 sale catalogues from 1600 to 1925. Essential reference for tracing works sold at auction in Europe over 325 years.

Over 24,000 pre-1945 sale catalogues digitised and OCR-indexed, covering the US, France, UK, Belgium, Netherlands, Austria, Germany, Switzerland, Italy, Sweden and Denmark. Essential for Nazi-era sales.

Online access to 7,821 French sale catalogues including those of the Hôtel Drouot. Supplemented by CFAJ catalogues. Essential resource for French inter-war and Occupation-era sales.

Digitised archives of Knoedler & Company (New York, 1846–2011). Stock books, correspondence, client files. Provenance on thousands of works that passed through the gallery.

Over 10 million sale results from more than 1,700 auction houses since 1985. Over half of records include illustrations. Useful for identifying public sale appearances and tracing recent ownership changes.

Over 57 million sale results from more than 2,000 international auction houses. Includes Artcurial, Koller, Tajan and Dorotheum. Useful for recent sales not covered by Artnet.

Data on over 900,000 artists: sale results, gallery listings, global exhibition archive. Artist signature library. Useful for provenance research via exhibition history.

PDF catalogue archives and sale results from the Hôtel Drouot and French regional houses. Broad coverage of the French provincial market often not indexed by international aggregators.

World's oldest family-owned auction house. Specialities: old masters, modern and contemporary art, Asian art, tribal art. Offices in Berlin, Frankfurt, Munich, Zurich, Brussels, Paris, Tokyo and Shanghai.

Specialist in 19th and 20th-century German art, German Expressionism, photography and design. Offices in Munich, Düsseldorf, Zurich and New York.

Munich house specialising in old masters, 19th-century art, European furniture, sculptures, carpets and Asian art. Around 700 sales per year.

Parisian house founded in 1956. Specialities: modern art, Impressionism, contemporary art, decorative arts, jewellery, furniture, books. Downloadable PDF catalogues.

One of the leading French houses outside Drouot. Specialities: modern and contemporary art, African and Oceanian art, automobiles, wines.

Online results archives. Offices in Paris (Drouot), Lyon, Nice and Brussels. Specialities: old masters, furniture, decorative arts, watches, jewellery. Significant French regional presence.

Parisian house specialising in 20th and 21st-century modern and contemporary art, French design and photography. Full catalogues accessible online.

Parisian house based at the Hôtel Drouot. Specialities: rare books and manuscripts, autographs, photographs, prints. Reference for works on paper and archives that passed through the French market.

Parisian house specialising in contemporary art, street art, design and editions. Useful for tracing contemporary works that passed through the French market over the past twenty years.

Leading Scandinavian auction house founded in Stockholm in 1870, integrated into the Bonhams network in 2022. Specialities: Swedish and Nordic art, Nordic design, jewellery, silverware, Asian art.

Parisian house integrated into the Bonhams network in 2022. Specialities: modern and contemporary art, haute couture, Asian art, jewellery, automobiles. Rooms in Paris (avenue Hoche) and Brussels.

House specialising in Napoleonic collections, French history and royal objects. Offices in Fontainebleau, Versailles and Paris. Results searchable since 1970.

House at Drouot since 1990. Specialities: old and modern paintings, decorative arts, numismatics, books and manuscripts, jewellery. Results searchable online since 2000.

Parisian house specialising in jewellery, luxury fashion (Hermès, Chanel, Louis Vuitton) and decorative arts. Results searchable since 2003.

Parisian house specialising in decorative arts, drawings and prints, furniture and private collections. Results and catalogues accessible online.

Parisian house at Drouot. Specialities: 19th and 20th-century paintings, Art Nouveau, Art Deco, furniture, jewellery and archaeology. Catalogues and results online.

House specialising in tribal arts, primitive art and antiquities. Sales at Drouot with online catalogues. Regular partner of major museum institutions on provenance issues.

General house at the Hôtel Drouot, one of the most active on the Parisian market. Multiple weekly sales: paintings, furniture, art objects, jewellery, books and comics. Results since 2003.

Geneva general auction house. Specialities: old and 20th-century paintings, furniture, contemporary art, Swiss art, Asian art, archaeology, watches and jewellery. Drouot partner.

World's first auction house specialising in modern and vintage watches, founded in Geneva in 1974. Participates in Geneva's biannual watch weeks. Results searchable online.

New York specialist in fine art, furniture, decoration, Asian art, jewellery, rare books and silverware. Has conducted notable sales for Columbia University and the Metropolitan Museum.

Pioneer of China's leading auction houses. Specialities: ancient and modern Chinese paintings, calligraphy, bronzes, porcelain, Buddhist art. Reference for Asian works on the mainland Chinese market.

Digital portal aggregating catalogues and results from 70 auction houses operating at the Hôtel Drouot. Full calendar, complete catalogues and hammer prices freely accessible.

Searchable archive of Sotheby's sales since 1998. Lot data, declared provenance, estimate and hammer price. Over 70 categories: paintings, sculptures, Asian art, jewellery, furniture, manuscripts.

Archive of Christie's sales since 1998. Records including provenance, literature, exhibitions, estimates and hammer prices. Rooms in London, New York, Paris, Geneva and Hong Kong.

World's oldest active auction house (founded 1707). Central role in Nazi looting research: the Dorotheum sold goods seized by the Gestapo (Vugesta) between 1938 and 1945. Market leader in Central Europe.

Sale results since 2003. Over 450 annual sales across 60+ categories: fine art, antiques, jewellery, automobiles, Asian art. Rooms in London, New York, Los Angeles, Paris and Hong Kong.

Results since 2006. Specialist in contemporary art, 20th–21st century design, photography, watches and jewellery. Rooms in New York, London, Geneva and Hong Kong.

Archives since 1941. Oldest continuously operating auction house specialised in works on paper in New York. Specialities: rare books, manuscripts, photographs, prints, African American art.

Specialist in German Classical Modernism (Expressionism, Bauhaus, Neue Sachlichkeit). Reference for Kirchner, Nolde and Kandinsky.

France's leading auction house by turnover. Specialities: modern and contemporary art, original comics, automobiles, jewellery, design.

Geneva's leading general auction house, founded in 1870. Specialities: old and 20th-century paintings, furniture, silverware, jewellery, Swiss art. Reference for estates and private collections in the Lake Geneva region.

Switzerland's leading auction house. Specialities: old masters, Swiss art, European furniture, jewellery, Asian art. Reference for works that passed through the Zurich market.

Scandinavia's leading auction house. Specialities: fine art, Danish furniture, Nordic design, silverware, jewellery.

World's third-largest auction house. Specialities: coins, stamps, comics, memorabilia, American and European art. Very comprehensive free archives.

One of China's leading auction houses. Specialities: ancient Chinese art, modern Chinese painting, calligraphy, contemporary Chinese art.

Digital aggregator of millions of objects from European museum, library and archive collections. Useful for locating objects in European public collections.

Smithsonian collections: 22 museums and 154 million objects. Provenance data available for many objects. Useful for checking if an object appears in US public collections.

Over 700,000 objects with detailed provenance data including Nazi-era research. Reference for Dutch and Flemish masters.

Over 490,000 works with published provenance data. Includes Nazi-era and antiquities provenance research. Global reference for identifying works in museum collections.

Louvre collections including the MNR (Musées Nationaux Récupération) register. Provenance data for potentially looted works. Reference for French collections.