Verifying the authenticity of modern art when buying online requires careful research and attention to detail. Here are some steps and key indicators buyers should look for to avoid counterfeit pieces:

1. Purchase from Reputable Sources: Buy from well-known and reputable online art galleries, auction houses and platforms that have a strong track record and positive reviews.
2. Provenance Documentation: Check for provenance, which is the history of ownership of the artwork. Authentic pieces often come with documentation that traces the artwork’s history back to its creation.
3. Certificates of Authenticity (COA): Ensure the artwork comes with a COA issued by a reputable authority or the artist themselves. This certificate should include details like the title, date, medium, dimensions, and artist’s signature.
4. Expert Verification: Consult art experts, appraisers, or specialists who can authenticate the artwork. Many online platforms offer services where experts verify the authenticity of listed artworks.
5. Detailed Descriptions and High-Quality Images: Look for listings with comprehensive descriptions and high-resolution images from multiple angles. These should show signatures, any distinguishing marks, and close-ups of the texture and technique.
6. Artist’s Catalog Raisonné: Refer to the artist’s catalog raisonné, which is a comprehensive, annotated listing of all known works by an artist. If the piece is listed, it adds credibility to its authenticity.
7. Research the Seller: Conduct thorough research on the seller. Check their credentials, history, and reviews from other buyers. Reputable sellers are more likely to offer authentic artworks.
8. Comparative Analysis: Compare the artwork with other known works by the same artist. Look for consistency in style, technique, and signature.
9. Art Databases and Registries: Use online art databases and registries that list stolen or forged artworks. Ensure the piece you’re interested in isn’t flagged in these resources.
10. Refund and Return Policies: Ensure the seller has a clear and fair refund or return policy in case the artwork is found to be inauthentic after purchase.

By following these steps and being vigilant, buyers can significantly reduce the risk of purchasing counterfeit modern art online.