An NFT on Ethereum is a unique token recorded on the blockchain that proves you own a specific digital item, the way a deed proves you own a specific house. Ethereum is where NFTs began and still where most high-value ones trade. This guide explains how they are made, where the artwork really lives, and where they change hands.
What is an NFT on Ethereum, and how is it different from a regular token?
An NFT, or non-fungible token, is a one-of-a-kind token whose ownership is tracked on Ethereum, unlike a regular token where every unit is identical. Each NFT carries its own ID number, so the network can tell your specific token apart from every other. That uniqueness is what lets it represent a single item rather than an amount.
The contrast with ordinary tokens makes this click. A stablecoin like USDC is fungible, meaning any one unit is interchangeable with any other, the same way one dollar equals another. An NFT is the opposite. It is built on a different rulebook, the kind of token standard our separate guide on Ethereum token standards covers. That rulebook gives every token a unique identifier instead of a shared balance. So while a token answers "how many do you have," an NFT answers "which exact one do you own."
Think of it like a property deed. A deed is just a piece of paper, but it points to one specific house and records who holds the title. An NFT works the same way. The token itself is a small entry on Ethereum that points to a specific item, a piece of art, a game character, a membership pass, and records your address as the owner. When you sell it, the network updates that record, the way a county office would update a deed.
This is why NFTs can stand for almost anything one-of-a-kind. The early wave was digital art and profile pictures, but the same structure works for event tickets, in-game items, human-readable wallet names like ENS .eth addresses, attendance badges such as POAPs, and even pointers to tokenized real-world assets. The token is a container for "this exact thing is yours," and what goes inside is up to the creator.
How is an NFT created, or "minted," on Ethereum?
Minting is the act of creating a new NFT by recording it on Ethereum for the first time. It assigns the token a fresh ID number and writes your address as its first owner. A smart contract does the work, and because it writes to the blockchain, minting costs a gas fee. After minting, the NFT exists on-chain and can be transferred or sold.
Walk through what actually happens when you mint from a typical collection:
You connect your wallet to the project's minting page and approve the transaction.
The collection's smart contract runs its mint function, which assigns the next available ID number to your wallet address.
You pay two things: the mint price the creator set, plus a gas fee for the network to process it.
Once the transaction confirms, the new token shows up in your wallet, and the network's permanent record now lists you as its owner.
There is a cheaper variation worth knowing, called lazy minting. Instead of writing the NFT to the blockchain up front, the creator lists it and the token is only minted on-chain at the moment someone buys it, so the buyer pays the gas. This is why some "newly created" art on a marketplace costs the creator nothing to list. The blockchain record is created later, when money changes hands.
One point trips up beginners: minting does not upload your artwork to Ethereum. It creates the ownership token and, in almost all cases, a pointer to where the artwork is stored elsewhere. That pointer, and where it leads, is the most important thing to understand before buying anything, so it gets its own section next.
Where is the NFT's image and data actually stored?
Usually not on Ethereum itself. The blockchain stores the ownership token and a link, called a tokenURI, that points to the artwork. The image and the other details, together called the metadata, are typically stored off-chain. Most often they sit on a decentralized file network called IPFS (source: ethereum.org NFT guide). Storing the full image on Ethereum is possible but expensive, so most projects keep only the pointer on-chain (source: EIP-721 specification).
This matters more than almost anything else about NFTs, so here is the honest picture. When you buy an NFT, what lands in your wallet is the token and its link. Following that link is how a marketplace shows you the picture. If the link points to a creator's private web server and that server goes offline, the picture can disappear even though you still own the token. If it points to IPFS, files are addressed by their content rather than by a location (source: IPFS content addressing docs). That makes the picture far more durable. Anyone keeping a copy can serve it, and the content address still matches.
The table lays out the trade-off:
Where the data lives | What is stored on Ethereum | Can the artwork vanish? | Cost to create |
|---|---|---|---|
Fully on-chain | The token and the image data itself | No, it lives as long as Ethereum does | Highest, gas to store everything |
Off-chain on IPFS | The token and an IPFS content link | Unlikely while someone keeps a copy | Moderate |
Off-chain on a private server | The token and a normal web link | Yes, if the server goes down or the link changes | Lowest |
From Blofin's operational perspective, the question we hear most from new NFT buyers is why their expensive picture is not really stored on the blockchain, and the honest answer, that most NFT art lives off-chain, is the single most useful thing a buyer can learn before spending. The practical takeaway is simple. Before buying, it is worth checking whether a collection stores its data on-chain or on IPFS rather than a plain company server. That one choice decides whether your NFT can quietly break years later.
Where do you buy and sell Ethereum NFTs?
On NFT marketplaces, which are websites that connect to your wallet and let you browse, buy, and list NFTs. The two best known on Ethereum are OpenSea, the long-running general marketplace, and Blur, which grew quickly by targeting active traders. You buy with ETH, so you generally need ETH in a self-custody wallet first.
A purchase works much like any on-chain action. You connect your wallet to the marketplace, find a listing, and confirm a transaction that pays the seller and transfers the token to your address. To list your own NFT for sale, the marketplace asks you to grant it permission to move that token on your behalf. That is the same kind of approval used across decentralized apps. It is why the safety habits in the last section matter here too. To get the ETH you spend, most people first buy it on an exchange, and the trade-offs between centralized and decentralized exchanges are covered in our separate guide.
The marketplaces differ in feel. OpenSea aims at a broad audience with a simple browse-and-buy experience and the widest range of collections. Blur is built for high-volume traders, with portfolio tools, fast sweeping of multiple items, and token rewards that pulled a lot of trading activity its way. For a first-time buyer, the choice mostly comes down to whether you want the simplest path or trader-grade tooling. Both connect to the same Ethereum NFTs, because the token lives on the chain, not inside any one marketplace.
Why did creator royalties become such a fight?
Because marketplaces disagreed on whether to enforce the cut creators earn on resales. Royalties are a percentage the original creator gets each time their NFT is resold, and for years marketplaces enforced them voluntarily. In 2023 that broke down, when trader-focused platforms made royalties optional to lower costs, and the rest of the market followed to stay competitive.
The fight was a real turning point, so it is worth understanding plainly. Early NFT culture treated royalties as a promise: an artist could earn, say, 5 percent every time their work changed hands, potentially forever. The catch is that this promise was never fully enforced by the blockchain itself; it was enforced by marketplaces choosing to honor it. When Blur rose in early 2023 with a token-rewards model and optional royalties, it pulled volume away from OpenSea. OpenSea then also moved to optional creator fees for new collections, rather than lose traders (source: OpenSea royalty change, Decrypt).
For a buyer, the lesson is that the "royalty" you see on a collection is a policy, not a guarantee written into the token. For a creator, it means royalty income depends on where their work trades and on tools that try to enforce fees on-chain. The episode taught the whole NFT market a hard truth about the difference between a social promise and a rule the protocol actually enforces. It is the same theme as the storage question: what the blockchain guarantees and what a company promises are not always the same thing.
Why do high-value NFTs still trade mostly on Ethereum, not cheaper chains?
Because Ethereum has the deepest liquidity, the most valuable collections, and the strongest security reputation, which is what large buyers care about most. Cheaper chains like Solana process more NFT transactions by sheer count, since low fees suit frequent retail trading, but the biggest-ticket sales and the blue-chip collections have stayed on Ethereum. As of 2026, Ethereum still accounts for a large share of NFT trading value even as overall NFT activity has cooled from its peak.
The split is best understood as value versus volume. Solana's low fees make it attractive for high-frequency, lower-priced trading, so it often leads in the raw number of NFT trades. Ethereum leads where the money is largest, the established collections, the institutional-sized purchases, and the cultural status that comes with them (source: Ethereum and Solana comparison, Messari). The reasons large buyers prefer it are practical, and the contrast table makes them clear.
Factor | Ethereum | Solana and other low-fee chains |
|---|---|---|
Typical strength | High-value sales, blue-chip collections | High count of low-cost trades |
Fees per trade | Higher, though far lower than the 2021 peak | Very low |
Liquidity for expensive items | Deepest | Thinner at the top end |
Buyer profile | Collectors and larger buyers | Frequent retail traders |
None of this means one chain is simply better. It reflects a difference in what each is used for. Ethereum's security and settlement record, the same qualities explored in our comparison of Bitcoin and Ethereum, make it the venue people trust for items worth a lot of money. Cheaper chains win the everyday churn. For a beginner, the takeaway is that where an NFT lives affects its market, its fees, and who is likely to buy it.
How do you hold NFTs safely?
You hold NFTs in a crypto wallet you control. You keep them safe with the same habits that protect any token: guard your keys, be careful with approvals, and use a hardware wallet for anything valuable. An NFT is only as safe as the wallet holding it, and most NFT losses come from scams and bad approvals rather than blockchain failures.
A short routine covers the real risks. First, treat any "claim your free NFT" or surprise airdrop with suspicion, because malicious ones are designed to trick you into signing a transaction that drains your wallet. Second, when a marketplace asks for permission to manage your NFTs so you can list them, understand that you are granting an approval, and review and revoke approvals you no longer use. Third, for collections worth real money, sign from a hardware wallet, so no transfer can happen without a physical confirmation on the device. Fourth, before buying into a collection, verify its official contract address from a trusted source, because scammers list copycat collections with the same name and images to fool buyers. Knowing how crypto wallets work turns all of this into routine rather than worry.
One more habit prevents heartbreak. Because the token and its artwork are usually separate, keep your own copy of any NFT art you care about, and remember that owning the token does not always mean owning the copyright. The token proves your place in the ownership record. What rights come with it depend on what the creator granted, which is the subject of the first FAQ below.
Frequently asked questions
Do I own the artwork and copyright when I buy an NFT?
Not automatically. Buying an NFT gives you the token that records your ownership of that specific item on Ethereum, but the copyright usually stays with the creator unless they explicitly grant it. Some projects do give holders broad commercial rights, while others grant none. Always check the collection's stated license. What you reliably get is the on-chain proof that you hold that token, not the legal rights to reproduce the underlying art.
What happens to my NFT if the marketplace shuts down?
Your NFT stays in your wallet, because the token lives on Ethereum, not inside the marketplace. A marketplace is only a venue for browsing and trading; it does not hold your token once it is in your self-custody wallet. You could simply use another marketplace. The one caveat is the artwork itself: if the image is stored on a private server that also goes offline, the picture could break even though the token survives.
Can an NFT's image be changed or deleted after I buy it?
Sometimes. If the metadata is stored fully on-chain, it cannot be altered. If it points to off-chain storage, the answer depends on the setup: a content-addressed IPFS link is very hard to change quietly, while a normal web link controlled by the creator could be updated or taken down. This is exactly why the on-chain versus off-chain storage question matters when you decide what to buy.
Do I pay gas to mint or buy an NFT?
Usually yes. Minting and buying are both Ethereum transactions, so they carry a gas fee on top of any price, though fees in 2026 are far lower than during the 2021 boom. With lazy-minted collections, the gas to create the token is paid by the buyer at purchase rather than by the creator at listing. Either way, budget a little ETH beyond the sticker price to cover the network fee.
Are NFTs only digital art?
No. Digital art and profile pictures made NFTs famous, but the same unique-token structure is used for event tickets, game items, memberships, domain names, identity credentials, and pointers to real-world assets. The art use case is the most visible, not the only one. Any time a project needs to prove that one specific item belongs to one specific owner, an NFT can do the job.
Are Ethereum NFTs the same as Bitcoin Ordinals?
No. They are different approaches to similar ideas. Ethereum NFTs are tokens created by smart contracts following a shared standard, while Bitcoin Ordinals inscribe data directly onto individual satoshis using a different method without that kind of contract layer. The two are not interchangeable and trade in separate ecosystems, which fits the broader design differences set out in our comparison of Bitcoin and Ethereum.
Researched and written by the Blofin Academy editorial team with AI-assisted drafting. Primary sources include the Ethereum.org NFT and token documentation, the EIP-721 specification from eips.ethereum.org, and IPFS documentation, with marketplace and royalty history cross-checked against Decrypt and market data from Messari. All facts independently verified against cited documentation current as of June 2026.
This article is for informational purposes only and does not constitute financial advice, investment guidance, or a recommendation to buy, sell, or hold any digital asset. NFTs are highly speculative, often illiquid, and can lose most or all of their value; the structure of an NFT does not guarantee the value or permanence of what it points to. Cryptocurrency markets involve significant risk and you should conduct your own research and consult qualified professionals before making decisions. Blofin Academy content reflects the state of public information at time of publication; protocol parameters, fees, and ecosystem data change frequently.