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Independent art authentication reports

Is the artwork what it claims to be?

Roy S. personally investigates your case and delivers a signed, evidence-based report.

  • 20+ years in artwork research
  • 161 published case studies
  • Private by default
Review artwork

Reports from $99

Only have a listing link? Start with the case form.

Pablo Picasso Picasso lithograph study artwork image for ConfirmArt expert art authentication evidence reviewPablo PicassoPicasso lithograph studyHenri Edmond Cross Painting attributed to Henri Edmond Cross artwork image for ConfirmArt expert art authentication evidence reviewHenri Edmond CrossPainting attributed to Henri Edmond CrossRoy Lichtenstein Roy Lichtenstein signature study artwork image for ConfirmArt expert art authentication evidence reviewRoy LichtensteinRoy Lichtenstein signature study
ConfirmArt service map: authentication, catalogue research, frame design and conservation assessmentOpen AuthenticationOpen Catalogue researchOpen Frame designOpen Conservation assessment

Real authentication cases

Four examples from the public case archive.

Vincent van Gogh Van Gogh portrait study artwork image for ConfirmArt expert art authentication evidence reviewVincent van Gogh

Van Gogh portrait study

A Van Gogh portrait study is reviewed through verso inscriptions, medium terminology, geography, corpus anchoring and signature evidence. What does context allow?

Diego Rivera El amigo de Frida artwork image for ConfirmArt expert art authentication evidence reviewDiego Rivera

El amigo de Frida

A Diego Rivera-related drawing is examined through verso labels, documentary claims, format, signature paleography and stylistic comparison. Follow the evidence trail.

Jan Anthonisz. van Ravesteyn Portrait attributed to Jan Anthonisz. van Ravesteyn artwork image for ConfirmArt expert art authentication evidence reviewJan Anthonisz. van Ravesteyn

Portrait attributed to Jan Anthonisz. van Ravesteyn

A portrait attributed to Jan Anthonisz. van Ravesteyn is examined through costume, panel, inscription and Dutch portrait comparables. The findings are unusually rich.

Fernando Botero Botero Dibujos artwork image for ConfirmArt expert art authentication evidence reviewFernando Botero

Botero Dibujos

A Botero equestrian drawing is examined through paper, provenance, motif repetition, market comparables and signature rhythm. The key findings are in the details.

Customer experiences

How customers used their report.

Read published reviews on Trustpilot

Evidence prepared for a bank refund process

A buyer reports receiving a detailed assessment in two days and using it to submit refund documentation to their bank.

Dourati · United States · July 2026

Repeated use by an auction-house owner

A professional client reports ordering numerous reports for clients and personal cases, describing the work as precise and fast.

Adrian Jacob · United States · February 2024
Paraphrased from published customer accounts. Individual experiences vary; banks, sellers and other third parties make their own decisions.

Partners and clients

ConfirmArt supports galleries, appraisal platforms, charities, ventures and private collectors.

Selected collaborations and client contexts include gallery inventory, artwork research, authentication support, catalogue documentation and market-facing case files.

Atlantiques Gallery logoAtlantiques GalleryAppraisily logoAppraisily
Goodwill of Central and Northern Arizona logoGoodwill of Central and Northern Arizona
Westmore Gallery logoWestmore Gallery
Ingress Ventures logoIngress Ventures
Invaluable logoInvaluable
eBay logoeBay
and many morePrivate collectors and professionals