NFT Guide: What Non-Fungible Tokens Are and How They Work
How NFTs Work
NFTs are smart contracts deployed on a blockchain — most commonly Ethereum using the ERC-721 or ERC-1155 token standards. The smart contract contains metadata that points to the digital asset (an image, video, or document) and records ownership on-chain.
When you buy an NFT, the blockchain records you as the owner. When you sell it, ownership transfers to the buyer. This transaction history is permanent, public, and verifiable — which is the core value proposition. For the first time, digital items can have provable scarcity and verifiable ownership.
Important distinction: the NFT itself lives on-chain, but the actual media file (the image or video) usually lives off-chain on IPFS or a centralized server. This means if the hosting goes down, your NFT could point to nothing. Higher-quality projects use IPFS or on-chain storage for permanence.
NFT Use Cases
| Category | Use Case | Current State |
|---|---|---|
| Digital Art | Provably scarce digital artworks with royalty mechanisms | Most established market, but highly speculative |
| Gaming | In-game items, characters, and land that players truly own | Growing — game studios experimenting with ownership models |
| Music | Direct artist-to-fan distribution, royalty sharing | Early stage — potential to disrupt music industry economics |
| Real Estate | Tokenized property ownership and fractional real estate | Experimental — regulatory hurdles remain significant |
| Identity | Verifiable credentials, diplomas, certifications | Emerging — partnerships with universities and institutions |
| Ticketing | Fraud-proof event tickets with resale controls | Active adoption — reduces scalping and counterfeiting |
| Collectibles | Digital trading cards, sports memorabilia | Established market through platforms like NBA Top Shot |
How to Evaluate an NFT Project
Team and track record. Who is behind the project? Anonymous teams with no verifiable history are high-risk. Look for teams with previous successful projects, public identities, and active community engagement.
Utility beyond speculation. Does the NFT provide real utility — access to events, governance rights in a DAO, in-game functionality, or revenue sharing? Projects with tangible utility have better long-term value retention than pure collectibles.
Community strength. The value of most NFT collections is driven by community. Active Discord, organic Twitter engagement, and a culture of holding (not just flipping) signal a healthy project.
Smart contract quality. Has the contract been audited? Are royalties enforced on-chain? Is the metadata stored permanently (on-chain or IPFS) or on a server that could go offline?
NFT Marketplaces
| Marketplace | Blockchain | Fees | Best For |
|---|---|---|---|
| OpenSea | Ethereum, Polygon, Solana | 2.5% seller fee | Largest selection, most liquidity |
| Blur | Ethereum | 0% marketplace fee | Professional traders, highest ETH volume |
| Magic Eden | Solana, Bitcoin, Ethereum | 2% seller fee | Solana NFTs, Bitcoin Ordinals |
| Foundation | Ethereum | 5% seller fee | Curated art, higher quality curation |
NFT Risks
NFTs carry significant risk. Most collections lose 90%+ of their value within a year. Liquidity is often thin — you may not be able to sell when you want to. Scams are prevalent: rug pulls (team abandons project after selling out), wash trading (fake volume to inflate prices), and phishing attacks targeting NFT holders.
The tax treatment of NFTs adds complexity. The IRS may classify NFTs as collectibles, subject to a higher capital gains rate of 28% instead of the standard 20% long-term rate. Every purchase, sale, and trade is a taxable event.
Key Takeaways
- NFTs are unique digital assets on a blockchain that prove ownership and scarcity of digital items.
- Use cases extend far beyond art — gaming, music, ticketing, identity, and real estate all show promise.
- Evaluate NFT projects based on team quality, utility, community strength, and smart contract security.
- Most NFT collections lose significant value — treat them as high-risk, speculative investments.
- NFTs may be taxed as collectibles (28% rate), and every transaction is a taxable event.
Frequently Asked Questions
Are NFTs a good investment?
Most NFTs are not good investments — the vast majority of collections lose value. However, blue-chip collections with strong communities and utility have retained value over multiple market cycles. If you invest, focus on quality over quantity and never invest more than you can afford to lose entirely.
What do you actually own when you buy an NFT?
You own the token on the blockchain, which represents a verifiable claim to a specific digital asset. However, you typically do not own the intellectual property or copyright of the artwork unless the project explicitly grants those rights. What you can do with an NFT depends on the specific project’s terms.
How do I buy an NFT?
You need a crypto wallet (MetaMask is most common) funded with the appropriate cryptocurrency (ETH for Ethereum NFTs, SOL for Solana). Connect your wallet to a marketplace like OpenSea, find the NFT you want, and purchase or place a bid. Always verify the collection is genuine before buying.
Can NFTs be copied?
The digital file (image, video) can be copied, just like you can screenshot a painting. But the blockchain record of ownership cannot be forged. The value of an NFT comes from provable ownership and authenticity, not from the file itself being uncopyable.
What are Bitcoin Ordinals?
Bitcoin Ordinals are NFT-like inscriptions stored directly on the Bitcoin blockchain. Unlike Ethereum NFTs that use smart contracts, Ordinals embed data directly into Bitcoin transactions. This makes them permanently stored on Bitcoin’s blockchain — the most secure and decentralized network — but with less functionality than Ethereum NFTs.