NFTs or “non-fungible tokens” are a popular new way of selling art or photos. NFTs are tracked on the Ethereum blockchain, and enable someone to buy and own the original copy. Oddly, you can buy the original, but the digital copies are the same quality. If you are a photographer, it is good to know that NFTs also enable you to collect a fee each time the item sells. You can also retain the copyright and reproduction rights, just like with physical artwork, but you would need to stipulate that in the sale agreement.
To try your hand at selling NFT images, two of the biggest markets are OpenSea.io and Rarible.com