Why Certificates of Authenticity Matter
A Certificate of Authenticity (COA) serves as the primary legal document establishing that a work of art is genuine. For galleries, it's not optional — it's a standard requirement for any sale above a few hundred dollars.
A properly issued COA:
- Protects the buyer's investment
- Supports insurance claims in case of damage or theft
- Establishes provenance for future resale
- Demonstrates gallery professionalism
The 9 Essential Elements
1. Artist Full Legal Name
Not just a signature — the artist's complete legal name as it appears on official records.
2. Title of the Work
The exact title, including "Untitled" if applicable. Avoid abbreviations.
3. Date of Creation
The year the work was completed. For works created over multiple years, use the range (e.g., 2024–2026).
4. Medium and Materials
A precise description: "Oil on Belgian linen" not just "oil painting." Include any unusual materials.
5. Dimensions
Height × Width × Depth in both inches and centimeters. Specify whether dimensions include the frame.
6. Edition Information
For prints and multiples: edition number (e.g., 3/25), plus AP (artist's proof) designation if applicable.
7. Unique Identifier
A catalog number, inventory code, or registration number that ties the COA to the specific work.
8. Artist or Authorized Signature
A hand signature or authorized representative's signature. Digital certificates should include a verifiable hash.
9. Date of Issue
The date the certificate was created, distinct from the date of the artwork itself.
3 Common Mistakes That Undermine Credibility
1. Vague medium descriptions. "Mixed media" tells the buyer nothing. Be specific: "Acrylic, oil pastel, and gold leaf on wood panel." 2. Missing dimensions. A COA without dimensions cannot be used for insurance purposes, which defeats one of its primary functions. 3. No unique identifier. Without a way to match the COA to the specific artwork, it has limited legal value.Professional COA Standards
Gilded Artworks generates certificates that include all 9 elements, formatted to meet industry standards used by auction houses and insurance underwriters. Each certificate includes a unique document ID and is optimized for archival printing.