Every piece gets an NFT certificate, and you never need a wallet

ChainChum started as an NFT platform on Polygon. Artists and parents loved the idea that a drawing could have a permanent, public record. Almost nobody loved installing a crypto wallet, buying coins and paying gas fees to get one.

So the new ChainChum keeps the NFT and removes everything around it.

#What changes

• You pay by card. Card, Apple Pay or Google Pay, in US dollars.
• We mint the NFT for you. Every work on ChainChum gets an NFT certificate of authenticity on Base, a low-cost Ethereum network, minted when the seller publishes it, for a one-time $1 certificate fee taken from the work's first sale. ChainChum pays the network fee, and every later sale is recorded on it for free.
• No wallet unless you want one. We keep a wallet for you and the record in step with the blockchain. Collectors who already use a wallet can export their token at any time and trade it elsewhere; ChainChum itself never trades tokens.
• Real art only. Every photo is screened for AI-generated images and every seller is a verified adult.

#Why keep the NFT at all?

Because a certificate is only as good as the record behind it. A paper certificate can be lost or forged. An NFT can't be quietly edited, and anyone can check it without asking us. Each ChainChum certificate stores a content hash, a fingerprint of the piece's details and photos, so a changed record is easy to spot.

That record follows the piece through every ChainChum resale, and the artist earns a royalty each time.

#Where to start

• New to all of this? Read What is an NFT?
• Buying? See buying art with an NFT certificate by card.
• Selling? See how to sell your art with an NFT certificate.
• Or see the whole journey in How ChainChum works.

Card checkout and on-chain certificates switch on with our first pilot sales. Shops and listings are open now.