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NFTs are non-fungible tokens stored on a blockchain. The term NFT can apply to any unique token, but it's most commonly used to describe a collectible, such as a piece of digital art or a trading card. An NFT may be bought, sold, or traded within the confines of the platform where it was created. Unlike Bitcoin (in theory), every NFT is unique—no two are exactly alike, even though they can be traded using the same technology.