What is an NFT?

A Non-Fungible Token (NFT) is a unique item recorded on a blockchain. Unlike a bitcoin — which is interchangeable with any other bitcoin — each NFT has its own identity. It might point to a piece of digital art, a profile picture, a game item, a ticket, or a membership credential.

How they work

Most NFTs live on Ethereum or an EVM-compatible chain, using the ERC-721 or ERC-1155 standards. An NFT contract is a smart contract that keeps a registry of token IDs and the address that owns each one. Each token usually points to a metadata file — commonly hosted on IPFS or Arweave — which describes what the NFT is and where its image, video, or other content lives.

Crucially, what the blockchain stores is the pointer, not the full file. If the metadata host disappears and no one has pinned the file, the NFT's image can go offline, even though the token itself remains. Reputable collections use IPFS with long-term pinning services or Arweave's "permaweb" to mitigate this.

The 2021 moment

NFTs exploded into public consciousness in 2021. Beeple sold a collage at Christie's for $69 million. CryptoPunks — a set of 10,000 pixelated avatars minted in 2017 for free — traded for hundreds of thousands of dollars apiece. Yuga Labs' Bored Ape Yacht Club became a celebrity-backed phenomenon. OpenSea briefly did more daily volume than the NYSE by some measures.

The mania pulled in retail, celebrities, luxury brands, and every Fortune 500 marketing team. It also pulled in scams, plagiarism, and wash trading on a massive scale. Floor prices collapsed through 2022 and most collections are now a fraction of their peaks.

Beyond speculative art

The interesting non-speculative use cases are quieter but real:

Game items. Fully on-chain games and some traditional studios issue items as NFTs so players can trade or sell them outside a publisher-controlled marketplace.

Credentials and identity. Gitcoin Passport, ENS names (Ethereum's DNS), and various proof-of-attendance systems use NFTs or soulbound variants as on-chain identity primitives.

Ticketing and memberships. Event tickets, gated community access, and subscription rights have all been issued as NFTs, letting holders resell or transfer them transparently.

Intellectual property. Music, films, and literary rights are increasingly experimenting with tokenized ownership or revenue shares.

Do NFTs still matter?

The speculative froth is gone. The underlying technology — a cheap, open way to issue unique digital objects with verifiable ownership — hasn't. Quietly, hundreds of millions of NFTs get minted every year as game items, digital IDs, and ticketing rails. Whether any of today's JPEGs hold their value is the wrong question; the more interesting one is what non-art uses finally find product-market fit.