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The Provenance Service is research, not authentication. We do attribution research, document chain of custody as far as records will carry, and issue a signed file with a sourced market range. What we deliver is an attribution opinion based on the documentation supplied — not a guarantee of authenticity, and not a substitute for in-person examination by a credentialed authenticator or USPAP-licensed appraiser.

The market range we cite is an indicated market range based on comparable sales in the public auction record. It is not an appraisal in the regulated sense of that word. Where a USPAP-certified appraisal is required — for IRS donation, insurance scheduling, divorce or estate valuation — we will tell you, and refer you to an independent appraiser.

Each file is signed, dated, cryptographically anchored, and delivered with the sources we relied on so you can verify the work yourself. The file is the record of our research. Buyers, sellers, and anyone relying on it are expected to conduct their own independent due diligence before acting on it.

What we will not opine on. Works claimed to be by living artists without that artist's confirmation. Works subject to an active artist-estate authentication committee. Works with a reasonable indication of theft or active title dispute. Where one of these conditions surfaces during research, we stop, return your fee, and tell you why.

Limitation of liability. JG Art Gallery's liability for any claim arising from a Provenance file is limited to the fee paid for that file. By submitting a work for research, you grant JG a limited license to the images for the purpose of executing the service, and warrant that you have the right to share those images. Disputes governed by Washington state law; venue Kitsap County, WA. Full terms confirmed at the time of intake.