★★★★★
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 2026Independent 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
- 160 published case studies
- Private by default
Only have a listing link? Start with the case form.
Real authentication cases
Four examples from the public case archive.
Peter MaxUmbrella Man I
Umbrella Man I is tested through Peter Max comparables, provenance and signature evidence. The report follows a familiar image into the details.
Henri MatisseDrawing
A Matisse-related drawing is tested through provenance, catalogue context and signature concerns. The report shows how a modest sheet can raise major questions.
Pablo PicassoMother Child
Mother Child is reviewed through primary source composition, catalogue entries, technical details and signature/date evidence. The findings hinge on comparison.
Keith HaringDüsseldorf 1988
A Dusseldorf 1988 Haring poster is reviewed through poster context, surface, signature and event history. The findings sit in the details.
Customer experiences
How customers used their report.
★★★★★
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 2024Partners 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.
Goodwill of Central and Northern Arizona
Westmore Gallery
Ingress Ventures
Invaluable
eBayand many morePrivate collectors and professionals