Crypto Decoded

NFTs: what they actually are and where they stand now

The NFT hype has burned off. What is actually left of the technology, why the 2021 boom collapsed, and where genuine use cases remain.

By Oliver Crane · April 23, 2026

Non-fungible tokens, NFTs for short, are simply records on a blockchain that say you hold a specific digital item. That is the whole technology. The 2021 boom was something else.

Reviewed by James Whitfield, Senior Editor · May 17, 2026, 00:29

In this article

The short version

Non-fungible tokens at the simplest level: a token on a blockchain that records the unique owner of a specific digital item. The 2021 market for non-fungible tokens was a speculative bubble, and most of it has unwound. A handful of real use cases remain.

An NFT is a record of ownership, not the file itself. The picture lives somewhere else, usually on a normal web server.
At the 2022 peak, NFT trading volumes on the main marketplace ran at around five billion dollars a month. They are now down more than ninety five percent.
Most non-fungible tokens had no use other than resale. Once the buyers ran out, the market collapsed.
Tokenised tickets, in-game items, and on-chain credentials are the survivors. They do real jobs.
HMRC treats NFTs as taxable assets in the UK. Capital gains rules apply.

Non-fungible tokens: what an NFT actually is

An NFT, or non-fungible token, is a record on a blockchain. It says that a specific digital item is uniquely owned by a particular wallet address. The item could be an image, a piece of music, a video clip or a line in a database.

The word fungible matters. A pound coin is fungible: swap one for another and you have the same thing.

A house is not fungible. Each one has its own postcode and its own title deed.

Non-fungible tokens apply that second logic to digital objects. Each token has a unique identifier, and the blockchain keeps a public ledger of who holds it. That is the whole core of the idea.

What you actually own when you buy an NFT

Non-fungible tokens explained honestly should start with what you do not get. When someone bought one of the famous cartoon ape images for millions, the image was not stored on the blockchain. What was stored was a link, usually pointing to a file hosted somewhere else, plus some metadata.

Ownership in the NFT sense means ownership of the token. You hold the right to say, on the ledger, that you have it.

It does not mean exclusive control of the image. It does not mean copyright. Many buyers discovered that distinction after the cheque cleared.

For a related risk worth knowing about, see our post on what is a rug pull and how do you spot one. The same patterns showed up across the NFT market.

The 2021 NFT boom: how prices got that high

The 2021 boom had several ingredients, and they worked together for a short window. Covid lockdowns had left people stuck at home with unspent income and a lot of screen time. Crypto prices were rising in a way that made early holders look clever rather than reckless.

Celebrity endorsements came thick and fast. Paris Hilton talked about Bored Apes on Jimmy Fallon. Premier League clubs launched their own fan tokens. A digital artist called Beeple sold a collage through Christie’s for sixty nine million dollars.

The combination of easy money, social proof and the feeling that something new was being built pushed prices into indefensible territory. No fundamentals supported them. Trading volumes on OpenSea, the dominant marketplace, peaked in January 2022 at around five billion dollars in a single month.

The crash: how the NFT market unwound

The collapse, when it came, was not a single event. It was a grind. Crypto prices fell through 2022 and the NFT market fell with them, only faster.

Projects that had raised money on promises of games, metaverses and membership benefits quietly stopped delivering. Some founders walked away with the proceeds in what the industry politely calls a soft rug pull. Others tried and simply ran out of money.

The secondary market dried up because the buyers had also been the sellers. Once confidence went, there was no one left to sell to. By the end of 2023, OpenSea’s monthly volume was down more than ninety five percent from the peak.

Most non-fungible tokens had no use other than resale. If the only reason to buy something is that you expect to sell it on, the market is a greater fool machine. When the fools run out, the structure gives way at once.

That does not make the technology fraudulent. It does mean a great deal of what was sold was speculative froth dressed up in the language of culture and ownership.

What survived: NFT use cases that still work

The more interesting question is what survived, because some things did. Tokenised event tickets are now used by some artists and festivals. The ticket lives in a wallet rather than an email inbox, and the resale market can be controlled by the issuer. That matters for anti-scalping efforts.

Non-fungible tokens for in-game items, where players genuinely own rather than rent from a publisher, remain a live area. The design challenges are harder than the early games admitted, but the underlying idea is sound. Digital identity and credentials are another live area. Academic certificates and professional memberships recorded on a chain have quiet early adoption where verification has been painful.

In the art world, some artists who built genuine audiences during the boom have kept going. They sell directly to collectors without a gallery in the middle. The volumes are a fraction of what they were, but the relationships are real.

NFTs and tax: the UK position

For a UK reader, the rules to know are straightforward. HMRC treats non-fungible tokens as taxable assets. The capital gains rules apply in the same way they do to other crypto holdings.

The official guidance lives in the HMRC Cryptoassets Manual. It covers individual holders, businesses, and the question of when a disposal triggers a tax event.

Royalties that creators were promised on secondary sales have largely been eroded. Marketplaces made those royalties optional.

The environmental argument, loud during the Ethereum proof-of-work era, has softened since the network moved to proof of stake. The reputational damage took longer to fade than the energy use did. For more on how that shift changed the picture, see our explainer on proof of stake versus proof of work.

A worked example

Say you bought a profile-picture NFT in late 2021 for one Ethereum, then worth around £3,000. By late 2023, the floor price for the same collection had dropped to around 0.1 ETH, worth roughly £150 after the wider ETH price fall.

If you sold for £150, HMRC treats this as a capital loss against your original cost in pounds. The loss is not theoretical, and it can be set against other capital gains in the same tax year. Records of the original purchase price and the gas fees you paid both count.

If you held on hoping for a recovery, you owe no tax until you sell. You also own a token pointing to a file that might not still be hosted. That is the worked example most NFT buyers from the boom ended up living through.

What this means for you

Non-fungible tokens as a category are now narrower, slower and occasionally useful. The hype is gone, and that is probably healthy. What is left is the genuine kernel: a way to record unique ownership of a digital item on a public ledger.

If you were thinking about buying something purely because prices are lower than they were, that is not a strategy. It is sentiment chasing. If you care about a specific creator or use case, the technology still has a role. You need to understand that you own a line on a ledger, not the thing it points to.

In plain English

An NFT is a digital receipt. The receipt says you own a particular file at a particular point in time. The file usually lives on a normal web server. The receipt lives on a blockchain.

That is useful for some things, like proving you hold a specific ticket. It is not useful for most things you saw advertised during the boom. Non-fungible tokens stripped of the marketing are a tool, not a movement.