An NFT is a token where each token is unique and cannot be freely swapped for another one of the same type. The distinction is with fungible tokens like ETH or USDC, where one unit is interchangeable with any other — your ETH is exactly the same as anyone else’s ETH. A non-fungible token, by contrast, has a unique ID and can have unique attributes attached to that ID, so one NFT is not equivalent to another even if they come from the same collection. This makes NFTs suitable for representing things where individual identity matters: art, collectibles, tickets, domain names, game items, music releases, membership credentials.
The dominant standard for NFTs on Ethereum is ERC-721, introduced in early 2018. A slightly newer standard, ERC-1155, lets a single contract issue both fungible and non-fungible tokens and is used by some games and marketplaces. Solana, Polygon, Tezos, Flow, and other chains have their own NFT standards that serve similar purposes. The concept is the same across chains: a contract with a unique ID for each item and a mapping from IDs to owner addresses.
The Boom and the Disillusionment
NFTs were niche until early 2021, when Beeple sold a digital collage at Christie’s for $69 million and triggered a wave of mainstream attention. The Bored Ape Yacht Club launched in April 2021 and became a cultural phenomenon. CryptoPunks, which had been minted for free in 2017, suddenly had a floor price of hundreds of ETH. Collections proliferated at a pace that made it impossible to keep track: thousands of new projects launched every month, and a mania of buying, flipping, and speculating fueled a market that peaked around $17 billion in monthly volume in early 2022.
Then it crashed. NFT trading volume fell by something like 95 percent from peak by mid-2023, most collections went to near-zero, and the narrative shifted from “NFTs are the future of digital ownership” to “NFTs were a speculative mania masquerading as a movement”. As of 2026, NFT volumes are a small fraction of the 2021-2022 peak, and most of the projects that were big names at the top have either faded or become niche communities. The exceptions — CryptoPunks, Bored Apes, Azuki, and a handful of others — have maintained recognisable markets but at floor prices well below their highs.
What NFTs Actually Turned Out to Be Useful For
Beyond the speculative collectibles use case, NFTs have found a few real niches. Domain names on systems like ENS (Ethereum Name Service) and SNS (Solana) are NFTs, and they solve a real problem — mapping a human-readable name to a crypto address — in a way that works. Event tickets are starting to show up as NFTs on Base and Solana because the format makes resale and authenticity verification straightforward. On-chain credentials — proofs that you attended a conference, completed a course, or held a token at a specific block — work well as non-transferable NFTs (sometimes called “soulbound” tokens). Music releases have found a small but genuine market on Sound.xyz and similar platforms where fans can buy editions directly from artists.
The thing NFTs did not turn out to be, despite the 2021 hype, is a mass-market replacement for traditional ownership. The legal status of “owning a JPEG” remains murky — you own the token, but whether you own any underlying copyright or even a specific rendering of the image depends entirely on what the project’s terms say, and those terms are rarely read by buyers. The link between the token and the actual image is almost always just a URL pointing to metadata hosted off-chain, and if the hosting goes away, the NFT points to a broken link. Some projects store metadata fully on-chain to avoid this, but they are a minority.
The Fractional Ownership Reality
A persistent pitch for NFTs was that they would democratise ownership of expensive assets — fine art, rare cars, real estate — by letting small buyers own fractions. This mostly did not happen, for regulatory reasons (fractionalising a physical asset runs into securities law almost immediately) and for practical reasons (the mechanism is complicated and the market for tokenised physical assets has never gotten off the ground at meaningful scale). Most NFT activity has remained with fully digital assets where ownership is unambiguous because the asset exists entirely on-chain.
The overall picture of NFTs, looking back at the full cycle, is that they are a real technical primitive that had a wildly overheated moment, produced some interesting experiments and some real ongoing uses, and settled into being one tool among many in the crypto toolkit rather than the industry-transforming force that the peak hype claimed.