What Is an NFT? How It Works and 10 Big Sales

An NFT, or non-fungible token, is a unique blockchain token used to identify a particular digital item or claim. Unlike a regular cryptocurrency unit, which is generally interchangeable with another unit of the same token, an NFT is distinguishable by its token ID and collection.

An NFT can be linked to artwork, a video, a game item, a membership, or another digital or physical-world claim. The token and the item are not always stored together: the blockchain may record ownership while the media file is hosted elsewhere. If that file or service disappears, the token can remain even if the content becomes hard to access.

In practical terms, owning an NFT usually means controlling the token through your wallet. It does not, by itself, guarantee that you own the copyright, can use the art commercially, or can redeem a physical object. Those rights depend on the project’s terms and the specific NFT. Treat the token as a record with rules to verify—not as automatic proof that you own everything it depicts.

These are ten widely reported headline sales, listed roughly from highest to lowest by the dollar value reported at the time. They are historical examples, not a live 2026 ranking or a guide to current market value. Dollar amounts can vary by report because cryptocurrency prices move, and some transactions are not directly comparable.

NFT or work	Reported sale value
Pak, The Merge	About $91.8 million
Beeple, Everydays: The First 5000 Days	About $69.3 million
Pak and Julian Assange, Clock	About $52.7 million
Beeple, Human One	About $28.9 million
CryptoPunk #5822	About $23.7 million
CryptoPunk #7523	About $11.8 million
Tpunk #3442	About $10.5 million
CryptoPunk #4156	About $10.3 million
CryptoPunk #3100	About $7.6 million
CryptoPunk #7804	About $7.6 million

The biggest caveat is The Merge: its reported $91.8 million represented a large sale of units to many buyers, not one person buying one conventional artwork in a single transaction. Everydays was a single artwork sold at auction. Comparing the two as if they were identical kinds of sale can mislead.

A sale price is evidence of one completed deal, not a standing valuation. It does not tell you what another buyer will pay, whether the seller made a profit, or whether the NFT can be resold quickly. Some famous sales happened during periods of intense attention that may not reflect later demand.

Before you consider a purchase, check:

• Trading activity: Are there recent sales, or only old headline prices and asking prices?
• Real buyers: Do the bids and sales look like independent activity? A listing price is not proof that anyone will pay it.
• Supply: How many tokens exist, and can more be issued?
• Utility: Is a promised membership, game feature, or redemption still available, and what are its terms?
• Exit costs: Could marketplace charges and network fees make a small resale uneconomic?

A rare trait or famous creator may attract attention, but neither guarantees buyers. If you cannot explain why the NFT might matter to you apart from the hope of selling it for more, pause. A collectible can be enjoyable without being a sound financial decision—and you should only risk money you can afford to lose.

Do not assume the token transfers every right connected to its artwork or subject. The project may grant limited personal use, commercial use under conditions, or no special licence at all. Read the collection’s terms and check whether the seller has authority to offer the rights they claim.

For an NFT linked to a physical item, confirm the redemption process, deadlines, shipping costs, storage or insurance arrangements, and what happens if the issuer stops operating. For an NFT that promises access to a service, check whether access depends on a company or website that could change or close.

Also check how the media is stored. A token can point to a file hosted on a centralized server, a decentralized storage system, or a changing webpage. The token’s continued existence does not guarantee that the linked media will remain available forever.

Before paying, identify the exact token and network, read the project’s terms, and confirm what you receive. If an important right or benefit is vague, treat it as unconfirmed rather than assuming it comes with the NFT.

If you decide to buy, use this order so you can catch the common errors before your wallet is involved:

1. Find the exact collection and token. Check the project’s official identity, the blockchain network, and the token details. Similar names and copied artwork can be used to imitate real collections.
2. Read the terms. Confirm any claimed licence, access, redemption, or creator royalty arrangement.
3. Calculate the full cost. Include the sale price, marketplace charges, network transaction fee, and any applicable royalty. The final total may differ from the displayed NFT price.
4. Use a wallet that supports that network. Keep enough of the network’s token for transaction fees, and never give anyone your recovery phrase.
5. Review the transaction screen. Verify the recipient, item, amount, network, and permissions. Reject a request you do not understand.
6. Keep a record. Save the transaction ID and the terms that applied when you bought.

Marketplace interfaces can make buying easier, but they do not eliminate the need to verify the collection or the transaction. OpenSea and Magic Eden are examples of NFT marketplaces; check which chains and transaction terms apply to the particular listing you are considering.

The purchase price is only one possible cost. Depending on the marketplace, network, and transaction, you may also pay a marketplace fee, a blockchain fee (often called gas), and a creator royalty. Fees and royalty handling can vary between platforms and transactions, so inspect the amount shown immediately before you approve.

Network fees can rise when activity is busy, and a failed transaction may still cost a fee on some blockchains. If you are moving funds between networks, a bridge or exchange may add separate charges and risks. Do not send assets to a network just because a marketplace displays a similar token name; confirm the chain first.

Selling has its own uncertainty. A high asking price is not a sale, and a thinly traded NFT may take a long time to find a buyer—or may not sell at all. You may need to accept a lower offer, pay transaction costs, or find that the marketplace does not support the listing method you expected.

Check the final payable amount and likely resale expenses before you approve. If the total is unclear, or you do not understand a wallet prompt, stop and investigate rather than signing under pressure.

The most costly mistakes are often rushed approvals and mistaken assumptions about what a token represents. Slow down when a message claims you have won a free NFT, urges you to act before a countdown ends, or asks you to connect your wallet on an unfamiliar page.

Avoid these errors:

• Trusting a copied collection name: Verify the collection’s identity and contract details, not just its logo or image.
• Confusing an offer with a completed sale: A seller’s asking price does not establish market value.
• Signing blind: Read wallet prompts; an approval may grant a contract permission to move certain assets.
• Sharing your recovery phrase: A legitimate marketplace or support agent does not need it. Anyone who obtains it can control the wallet.
• Ignoring the network: Sending the wrong asset to the wrong chain can make recovery difficult or impossible.
• Treating scarcity as a promise: Limited supply does not guarantee demand or future value.

If a transaction looks wrong, do not approve it. For a wallet you use to explore unfamiliar projects, consider limiting the assets it holds and review or revoke permissions using trusted wallet tools. Never rely on a stranger offering recovery help in exchange for your seed phrase or an upfront payment.