★★★★★
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
- 161 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.
John LennonJohn Lennon signature study
A John Lennon signature case is reviewed through handwriting, publication context and object history. The report focuses on what the inscription can support.
Pablo PicassoThe Slave
The Slave is reviewed through architectural background, documentary support and signature evidence. The report asks whether context and hand align.
Jean-Michel BasquiatUntitled
An untitled Basquiat claim is reviewed through visual language, marks, support and provenance signals. The case shows why first impressions are not enough.
Fernando BoteroSigned painting attributed to Fernando Botero
A painting bearing a Botero signature is tested through color, surface, dimensions, inscription area and comparative form. Does the visual language hold together?
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