What Are NFTs, and Why Do They Still Matter?

Few crypto assets have swung as sharply between hype and dismissal as non-fungible tokens. In 2021, NFTs sold for millions of dollars and appeared in mainstream advertising campaigns. By 2023, trading volumes had reportedly collapsed by more than 90 percent from their peak, and much of the coverage turned to mockery. Neither extreme captures what an NFT actually is or what it can do. This guide explains the underlying mechanism, what buying an NFT does and does not grant a person, an honest account of the 2021-2022 cycle, and the practical risks worth understanding before treating one as anything more than a niche, still-developing tool.

What an NFT technically is

A non-fungible token is a unique entry recorded on a blockchain, most commonly Ethereum, though several other networks support them. “Non-fungible” simply means not interchangeable. One unit of bitcoin is identical in value and function to any other unit of bitcoin — that is what makes it fungible, like currency. An NFT is the opposite: each token carries a distinct identifier, and no two are the same, even if they belong to the same collection.

Technically, an NFT is usually implemented through a smart contract following a standard such as Ethereum’s ERC-721 or ERC-1155. The token itself typically does not contain the artwork, video, or item it represents. Instead, it holds a pointer, often a link to a file stored elsewhere, sometimes on a centralized server and sometimes on a more durable system such as IPFS. This distinction matters more than it might first appear, because it separates the token — the thing recorded on-chain — from the asset the token refers to.

What ownership of an NFT actually means

Holding an NFT in a wallet means controlling a specific token ID on a specific contract, verifiable by anyone who checks the blockchain. That is a genuine form of provenance: it is typically possible to trace an NFT’s full ownership history back to its creation. What it does not automatically confer is copyright, trademark rights, or exclusive control over the underlying image or file.

• Token versus asset. Owning the token proves a wallet holds that specific on-chain record. It does not, by itself, transfer legal rights to the artwork or intellectual property unless the project’s terms explicitly grant them.
• Copying is trivial. Anyone can right-click and save an NFT’s associated image. This does not affect who holds the token; the value some collectors place on NFTs rests on verifiable scarcity and provenance rather than technical inability to copy a file.
• Terms vary by project. Some collections do license commercial rights to holders; others explicitly reserve all rights to the creator. Reading a project’s terms of use is typically the only reliable way to know what is actually being purchased.

In short, an NFT is closer to a verifiable, transferable certificate than to a copyright deed. That is a meaningful piece of infrastructure, but it is narrower than the “owning a piece of digital art” framing that circulated widely during the boom.

The 2021-2022 boom, and what followed

NFTs existed well before 2021, but that year brought them into mainstream attention. Profile-picture collections, sports highlight clips, and generative art projects sold for large sums, sometimes to celebrities and major auction houses. Total NFT trading volume peaked in early 2022 at tens of billions of dollars over the preceding twelve months, driven by a mix of genuine curiosity, speculative flipping, and social status signaling within online communities.

The decline that followed was steep and has been well documented by blockchain analytics firms. By 2023 and into 2024, trading volumes across major marketplaces fell more than 90 percent from their 2021-2022 highs, and a large share of collections became effectively illiquid, with floor prices near zero and few active buyers. Several factors contributed: the broader crypto bear market reduced speculative capital across the board, many projects had no plan beyond initial sales, and some were outright abandoned by their creators once funds were raised. It is reasonable to describe most of the 2021-2022 NFT market as a speculative bubble that has since deflated, and treating that period as representative of the technology’s ongoing value would be misleading in either direction — too dismissive of what NFTs are structurally capable of, and too generous to how that particular cycle actually played out.

Where practical utility has persisted

Once the speculative volume receded, a smaller set of use cases kept developing, generally ones where the token’s core properties — verifiable ownership, scarcity, and transferability — solve a specific problem rather than serving primarily as a collectible.

• Event ticketing. NFT-based tickets can reduce fraud and give organizers programmable control over resale, such as capping markup or routing a royalty back to the artist.
• Gaming items. In-game assets issued as NFTs can, in principle, be traded or used across compatible titles, though most major game studios have moved cautiously and adoption remains limited relative to early projections.
• Membership and access passes. Some communities and platforms use NFT ownership as a key that unlocks token-gated content, events, or software features, functioning similarly to a digital membership card.
• Provenance for digital art. Independent artists use NFTs to establish a verifiable chain of custody and sale history for digital work, which is difficult to achieve through other means online.
• On-chain identity experiments. Projects such as soulbound tokens and verifiable credentials explore using non-transferable NFTs to represent achievements, memberships, or reputation tied to a specific wallet rather than a tradable collectible.

None of these use cases currently operate at the scale the 2021 hype implied, and most remain experimental rather than mainstream infrastructure. But they represent a more grounded, utility-first direction than the collectible-flipping that dominated the boom.

Risk factors worth understanding

Anyone evaluating an NFT, whether as a collector or out of general interest, should weigh several risks that are specific to this asset type.

• Wash trading. Blockchain analytics research has repeatedly found that a meaningful share of reported NFT trading volume, particularly during 2021-2022, involved the same parties trading with themselves to inflate apparent demand or qualify for token rewards. Reported volume and floor price figures should be treated with caution.
• Illiquidity. Unlike a widely traded token, a specific NFT may have no willing buyer at any price for extended periods. Liquidity for most collections outside a small number of well-known ones is thin at best.
• Smart contract risk. The contracts governing an NFT collection can contain bugs or, in some documented cases, functions that let a project’s creators mint unlimited additional tokens or alter terms after launch, diluting or undermining what buyers believed they held.
• Hype-driven pricing. Prices for many NFTs have tended to reflect prevailing sentiment and social momentum more than any measurable cash flow or utility, which makes them prone to sharp repricing when attention shifts elsewhere.

As with any digital asset, understanding what is actually being purchased, reading a project’s documentation, and applying ordinary due diligence matters more than the presence or absence of hype in the broader market.

This article is for informational purposes only and is not financial advice.