About ChainChum

ChainChum is a marketplace for real art by real people. Independent artists and families sell originals, numbered prints and handmade goods, and every piece sold comes with a certificate of authenticity anyone can verify.

#Why we built it

ChainChum began with two parents and a pile of children's drawings that had to go during spring cleaning. We wanted a way to keep every piece and the story behind it, and to let the best of it find a home. You can read the original story on our blog.

Since then, online marketplaces have filled up with AI-generated images sold as art, and artists pay up to a quarter of each sale in fees. ChainChum is our answer:

• Human-made, checked. Every seller is a verified adult and every photo is screened for AI-generated images.
• A certificate with every piece, tied to the work's photos and details, and verifiable for life.
• Sellers keep 95%. One flat 5% on what sells, plus a $1 certificate fee per work taken from its first sale, with no monthly plan and no forced ads.
• Family art, safely. Parents sell their children's work as themselves; children's names and faces never appear.

#Who we are

ChainChum is built by Dataexpansed LLC in Stamford, Connecticut. Questions, ideas or press: chainchum@dataexpansed.com.