What Are NFTs and How Do They Actually Work?

When Beeple’s digital collage ‘Everydays: The First 5000 Days’ sold at Christie’s for $69 million in March 2021, it introduced most of the world to NFTs, or non-fungible tokens: unique entries on a blockchain that represent ownership of a specific digital or physical item. The word fungible describes something interchangeable, like a dollar bill, where any one unit is identical in value to any other. Non-fungible means the opposite: each token is distinct and can’t be swapped one-for-one with another, the way one particular concert ticket for a specific seat isn’t interchangeable with a ticket for a different show.

It's important to understand exactly what an NFT records. Buying an NFT tied to a piece of digital art typically doesn't transfer the copyright to that artwork, the artist usually keeps that. What you actually own is a token on the blockchain that points to the item, often via a link or hash, and serves as a verifiable, tamper-resistant record that you hold that specific token. The underlying image file itself can usually still be viewed or copied by anyone, ownership is about the token, not exclusive access to the image.

NFTs exploded into mainstream attention through digital art and collectibles, with profile-picture projects and generative art collections trading for large sums during the 2021 boom. That speculative frenzy cooled significantly afterward, and prices for most collections fell sharply, which led plenty of observers to write off the entire category. But the underlying technology, a way to create verifiable, transferable ownership records for unique items, kept finding new uses outside of art.

Today NFTs show up in event ticketing, where a token can prove you hold a legitimate ticket and prevent fraud; in gaming, where they represent in-game items players can genuinely own and trade across platforms; and in real-world asset ownership records, where they've been used to represent everything from event memberships to fractional ownership of physical property. The common thread is using a blockchain to create a unique, verifiable record of ownership for something that isn't interchangeable.

As with most of crypto, the technology itself is neutral, it's just a tool for recording unique ownership on a shared ledger. Whether a particular NFT holds lasting value depends entirely on what it actually represents and whether people continue to want that underlying thing, not on the fact that it happens to be an NFT.