NFT stands for Non-Fungible Token. An NFT can neither be replaced nor interchanged because of its unique properties. NFTs are digital assets that can represent digital collectibles, art, music, games, etc. with a built-in certificate of authenticity, enabled by blockchain technology. NFTs live on the blockchain. OpenSea (opensea.io) is the largest NFT marketplace in the world. NFTs can only have one owner at a time, and blockchain technology makes it easy to verify ownership and transfer ownership between owners. Because NFTs are generally one of a kind, they can appreciate as buyers compete for one-of-a-kind items or assets in short supply.