NFTs Explained: Beyond Digital Art

When NFTs first hit the headlines in 2021, the conversation was dominated by extraordinary prices for digital images. Beeple sold a digital collage for the equivalent of £47 million. Twitter’s founder sold his first tweet as an NFT for approximately £2.1 million. A year later, that same tweet sold at auction for just over £180. It was easy to conclude that the entire sector was a bubble that had popped. But three years on, the underlying technology is being applied in ways that have nothing to do with collecting digital art — from concert tickets and music royalties to property ownership and university degrees. This guide explains what NFTs are, how they work, and what applications are emerging in the real world.

What Is an NFT, Exactly?

NFT stands for non-fungible token. To grasp what this means, you first need to understand fungibility. A fungible asset is one that is perfectly interchangeable with another of the same type. One £10 note has exactly the same value as any other £10 note. One bitcoin is worth exactly the same as any other bitcoin. Fungible things are identical and substitutable — there is nothing special about one unit compared to another.

A non-fungible asset is unique, or part of a strictly limited edition with no perfect substitute. A signed first-edition copy of a novel, a specific seat at a particular concert, a plot of land registered at the Land Registry, or an original painting — these are non-fungible. There is only one, and no identical replacement exists.

An NFT is a digital token recorded permanently on a blockchain that represents ownership of something unique. The token contains a cryptographic record of who owns it, the complete transaction history from creation to present, and metadata pointing to the asset it represents. Unlike a paper certificate of ownership, an NFT cannot be secretly duplicated or forged — the blockchain record is publicly verifiable and immutable.

Most NFTs are built on the Ethereum blockchain, though alternatives including Solana, Polygon, and Tezos also support the technology. Ethereum charges a processing fee called gas whenever an NFT is minted or transferred between wallets. Gas fees are paid in the cryptocurrency Ether and fluctuate significantly based on network demand — ranging from a few pounds during quiet periods to over £100 per transaction when the network is congested.

How NFTs Work on the Blockchain

Creating an NFT is called minting. When you mint an NFT, you are writing a permanent entry to a public blockchain ledger. The entry includes a unique token identifier, the creator’s wallet address, the current owner’s wallet address, and a cryptographic hash — a unique digital fingerprint that identifies this specific token and only this token, making duplication detectable instantly.

Most NFTs do not store the actual file on the blockchain itself. A high-resolution digital artwork or video might be hundreds of megabytes. Storing that volume of data directly on a blockchain would cost thousands of pounds in gas fees and is technically impractical at scale. Instead, the NFT stores a reference — typically a link to a file hosted on IPFS, the InterPlanetary File System, which is a decentralised storage network designed to be persistent and resistant to single points of failure.

This is both a practical necessity and a vulnerability. If the storage host shuts down, if the IPFS link becomes unpinned and the content expires, or if the hosting fees lapse and a server goes offline, the NFT token persists on the blockchain but points to nothing. Several collections of NFTs that sold for significant sums during the 2021 boom have since lost their associated files entirely. When evaluating any NFT, the long-term storage arrangement is not a minor technical detail — it is fundamental to whether the asset retains any meaning.

Smart contracts govern NFT behaviour automatically and without any centralised controller. A smart contract is self-executing code deployed on the blockchain that runs exactly as written, every time, without the possibility of modification after deployment. A smart contract can encode royalty payments — so that every time an NFT is resold on a secondary marketplace, the original creator automatically receives a pre-set percentage, typically between 5 and 10 per cent. This was a genuinely significant innovation for artists, musicians, and other creators who in traditional markets received no benefit from secondary sales of their work.

NFTs in Music and Entertainment

Digital art generated the initial headlines, but music NFTs have been building a quieter and arguably more commercially durable market since 2022. The music industry has long struggled with fair revenue distribution — streaming platforms like Spotify pay the majority of royalties to labels and distributors, with artists often receiving fractions of a penny per stream. NFTs offer a way around this structure.

Musicians use NFTs to sell albums, singles, and exclusive content directly to fans, bypassing record labels and digital intermediaries entirely. American DJ 3LAU sold an NFT music album for approximately £9.5 million in February 2021. UK musician Grimes sold a collection of digital artworks with accompanying audio tracks for a total of approximately £4.5 million in the same month. Both artists dealt directly with buyers, retaining a far greater share of revenue than any traditional label deal would have permitted.

Royalty-sharing platforms allow fans to purchase NFTs representing a fractional stake in a specific song’s future streaming income. If the track accumulates streams, NFT holders receive proportional royalty payments automatically through smart contracts. Platforms including Royal.io and AnotherBlock have built this model commercially, giving fans a genuine financial interest in the artists they support — something traditional fan merchandise or vinyl records never offered.

Event ticketing is one of the most practically compelling applications for NFT technology in entertainment. Traditional concert tickets are prone to fraud through counterfeiting, and secondary market platforms routinely mark up prices by 200 to 400 per cent. NFT tickets are tied to a buyer’s specific wallet address and can be programmed through smart contracts to cap resale prices, restrict transfers to verified accounts, or automatically distribute a percentage of each resale to the artist and the venue. UK festival organisers and promoters have begun piloting NFT-based systems for exactly these reasons.

NFTs in Gaming and Virtual Worlds

Gaming is one of the most commercially interesting long-term applications for NFTs, and the space is evolving rapidly as early experimental models are replaced by more sustainable approaches.

Traditional game economies are closed systems. Players spend real money on in-game items — weapons, skins, characters, cosmetic upgrades — but these purchases exist only within the game’s own database. If the publisher shuts down servers, changes its terms of service, or bans an account, the player’s investment disappears entirely with no recourse. Players in popular games like Fortnite, FIFA, and World of Warcraft have collectively spent billions of pounds on items they do not legally own and cannot sell or transfer.

NFT-based games give players verifiable ownership of in-game assets recorded on a public blockchain that exists independently of any single company’s servers. A weapon, a character skin, or a plot of virtual land exists as an NFT in the player’s wallet — not as a database entry controlled by a publisher. It can be sold peer-to-peer on open marketplaces, lent to other players in exchange for a fee, or held as a speculative investment. Ownership is real, portable, and does not depend on the continued goodwill of any game developer.

Axie Infinity demonstrated in 2021 that blockchain game economies could reach significant scale. Players in the Philippines, Indonesia, and other countries were earning more through the game than their day-job wages, by breeding and battling NFT creatures. At its peak, the game had over two million daily active users. The economy proved unsustainable — it relied on a constant influx of new buyers to sustain payouts to existing players — and the in-game token price collapsed by over 95 per cent in 2022. The experiment failed economically, but it proved that blockchain gaming economies were technically viable and could attract mainstream user numbers.

More balanced models are emerging from the lessons of that era. Games including Illuvium, The Sandbox, and Gods Unchained design economies where NFT assets have genuine utility within the game rather than purely speculative value. Major publishers including Ubisoft and Square Enix have published long-term roadmaps for NFT integration, focused on player ownership rather than speculative token mechanics.

NFTs for Real-World Assets and Credentials

Perhaps the most durable long-term application for NFT technology is as a digital record of ownership for real-world assets — property, luxury goods, financial instruments, and professional qualifications. These use cases require regulatory clarity that is still developing, but the practical logic is compelling and several are already in commercial use.

Property tokenisation involves using NFTs to represent fractional ownership of real estate. Rather than requiring the full purchase price of a property to invest in it, an investor might buy tokens representing a small fraction of the asset. This would allow someone to invest £500 in a rental property rather than needing £50,000 for a deposit. UK startups and European platforms have begun exploring tokenised property funds, though mainstream adoption is currently constrained by legal uncertainty around whether token ownership constitutes binding legal property ownership under English land law.

Luxury goods authentication represents an immediate commercial application. The LVMH Group — owner of Louis Vuitton, Dior, Givenchy, and Bulgari — developed the Aura Blockchain Consortium, which assigns each luxury item an NFT-based digital certificate of provenance. When a product is sold, the buyer receives an NFT proving its origin, authenticity, and full ownership history. This makes counterfeiting and the resale of stolen goods in secondary markets significantly more detectable, protecting both consumers and brand value simultaneously.

Academic credentials are being issued on blockchain-based NFT systems at a growing number of institutions worldwide. The Massachusetts Institute of Technology began issuing blockchain-based digital diplomas in 2018. The University of Edinburgh and several other UK universities have explored equivalent systems. An NFT-backed degree certificate can be verified by a prospective employer within seconds — no waiting weeks for a paper certificate, no phone calls to a registrar, and no risk of a fraudulent credential passing an initial screen undetected.

The UK NFT Market and HMRC’s Position

The UK participated actively in the NFT market during its 2021 to 2022 peak, with British collectors, artists, and creators all active on global platforms. Trading volume has fallen sharply since those years — global NFT transaction volume declined by over 90 per cent between the January 2022 peak and January 2024, according to data from DappRadar. UK activity has tracked this global trend. Despite the contraction, developers, artists, and institutional investors continue building in the space with longer time horizons in mind.

HMRC has published guidance making clear that NFT gains fall squarely within the UK capital gains tax regime. If you purchase an NFT for £2,000 and later sell it for £7,000, the £5,000 gain is a taxable capital gain in the tax year of the disposal. The annual CGT allowance fell from £12,300 to £6,000 in the 2023/24 tax year, and dropped again to £3,000 from the 2024/25 tax year onwards — a reduction that has significantly increased the tax exposure of even relatively modest NFT profits made by UK residents.

HMRC’s guidance also establishes that exchanging one NFT for another constitutes a disposal for CGT purposes, even if no pounds sterling change hands in the transaction. If you swap an NFT valued at £3,000 for another NFT also valued at £3,000, this is a taxable event. The market value at the point of exchange determines whether a gain or loss has arisen. This requirement catches many active NFT traders completely off guard and creates complex record-keeping obligations that must be met regardless of whether a profit was ultimately realised.

Income earned through play-to-earn gaming — receiving cryptocurrency or NFT tokens as rewards for playing — may be treated by HMRC as trading income rather than capital gains, depending on the frequency and nature of the activity. Anyone earning consistently through NFT gaming should seek specialist advice on whether this activity constitutes a trade for tax purposes. Keeping detailed records of every transaction — purchase price, sale price, exchange value, date, and the GBP equivalent at each point — is a legal obligation, not merely good practice.

The Risks You Need to Know

NFTs carry material risks that anyone considering buying, selling, or holding them should understand before committing any capital.

Liquidity risk is the most immediate and least discussed concern. Creating or acquiring an NFT is technically straightforward. Finding a willing buyer at a price you consider acceptable is hard, and for most NFTs, may be impossible. During the 2021 boom, thousands of collections were minted and sold. The overwhelming majority now have no active secondary market at any price. Capital can be permanently trapped in an illiquid asset with no realistic exit — this is unlike almost any other investment class where a market price, however low, can usually be found.

Scams and rug pulls were rampant during the boom and remain an ongoing risk. A rug pull occurs when project creators raise money from NFT sales and then abandon the project — often within days of launch — disappearing with the funds and leaving buyers with worthless tokens. The Frosties NFT project raised over £1 million in January 2022 before the founders closed all communication channels and transferred the funds hours after launch. The founders were subsequently arrested by the FBI and charged with wire fraud and money laundering, but victims recovered very little of their losses.

Smart contract vulnerabilities can cause instant and irreversible losses. Because blockchain code is immutable once deployed, a flaw in a smart contract cannot be patched by simply releasing an update — the contract either has to be abandoned or new funds routed through a corrected version. Before engaging with any NFT project, research whether its smart contracts have been independently audited by a reputable security firm. Unaudited contracts from new projects carry significantly higher risk.

Environmental concerns have largely been resolved for Ethereum-based NFTs. When Ethereum completed its transition from proof-of-work to proof-of-stake in September 2022 — an event known as the Merge — its energy consumption fell by over 99.9 per cent. NFTs minted on Ethereum since that date have a negligible energy footprint comparable to a few minutes of internet browsing. However, some platforms and alternative chains still operate proof-of-work consensus, and buyers concerned about environmental impact should confirm the energy model of whichever blockchain they are using before transacting.

What This Means for UK Investors

NFTs are not disappearing, but their role is being redefined. The speculative collectibles market that dominated 2021 and early 2022 has contracted dramatically and shows no signs of returning to those levels. What is emerging in its place is quieter and more purposeful — ticketing systems that resist fraud and scalping, credentialing systems that resist forgery, royalty structures that pay creators fairly, and ownership records that reduce the friction of asset transfer for real-world goods.

For UK investors and anyone curious about this space, the practical framework starts with four essential questions. What does this specific NFT actually represent — a speculative asset, a utility token, a fractional claim on a real asset, or something with genuine ongoing use? Is the smart contract code independently audited by a named, reputable firm? What are the full tax implications, and do you have records sufficient to file an accurate HMRC return? Who is behind the project, what is their track record, and are they publicly identifiable?

HMRC’s guidance has been consistent and is unlikely to become more lenient as the market matures and the tax authority develops greater expertise in digital assets. CGT applies to gains. Swaps between NFTs are disposals. Income from gaming activity may be taxable as trading profit. If you are active in NFT markets without specialist advice, you may face unexpected tax liabilities that significantly erode any returns. Speak to a crypto tax adviser with documented experience in digital assets before the end of each tax year — not after.

The technology itself is solving a real problem: how to prove unique ownership of anything digital, or to create a trusted and transparent public record for anything physical. Whether current NFT projects deliver lasting value for investors depends on which applications achieve genuine traction with real users and real commercial use cases — and on the regulatory environment that the UK, the European Union, and global markets collectively build around digital assets over the next five years.

This article is for educational purposes only and does not constitute financial advice.