NFT basicsWhat are NFTs?
NFTs are unique digital tokens that prove ownership of things like digital art or in‑game items. This guide walks through what that really means, how they’re used, and how standards like ERC‑721 and ERC‑1155 fit in.
Who this guide is for
Crypto‑curious gamers, creators, and collectors. No coding experience required.
You’ll learn
- What NFTs are and how they differ from regular digital items.
- How they’re used in art, games, ticketing, and more.
- The difference between ERC‑721 and ERC‑1155 token standards.
What exactly is an NFT?
Like a dollar bill or Bitcoin. If you trade one Bitcoin for another, you have the exact same thing. They’re interchangeable.
- Bitcoin
- USD / Gold
- ERC-20 Tokens
Like the Mona Lisa or a specific house. It can’t be replaced 1:1 with something identical because its properties and history are unique.
- Digital Art
- Game Items
- ERC-721 / 1155
Where does an NFT actually live?
- Smart contract: The program on the blockchain that defines the NFT collection.
- Token ID: A unique number within that contract that points to your specific NFT.
- Metadata: Usually a JSON file with the NFT’s name, image URL, and traits.
Why not just a normal database?
- Centralized databases are controlled by a single company; records can be changed or deleted.
- NFTs live on a public blockchain, so anyone can verify ownership history.
- Items can move between compatible apps and marketplaces, not just one game.
Quiz
Test your knowledge: Is it an NFT?
A JPEG file saved on your desktop hard drive.
A golden sword item inside a centralized game (like World of Warcraft).
A digital ticket minted on the Polygon blockchain.
We recommend this clear intro to NFTs by Patrick Collins.
Key characteristics
Most NFTs share a few core properties. These are what make them useful for proving ownership and scarcity.
Uniqueness
Each NFT has a unique ID that distinguishes it from all others.
Indivisible
In most cases you can’t buy 0.5 of an NFT. You either own it or you don’t; fractional NFTs exist but are a more advanced pattern.
On‑chain history
You can trace ownership from minting to the current holder.
Transferable
They can be traded globally on marketplaces via smart contracts.
Common uses & applications
NFTs started with art, but the same core idea—provable digital ownership—now shows up in many different areas.
Digital art
Artists mint works as NFTs so collectors can verify authenticity and scarcity.
Gaming items
Skins, weapons, or avatars you actually own and can trade—like loot you earn in a Rodeyo‑powered game.
Ticketing & access
Event tickets or passes that are harder to fake and easy to verify.
Music & media
Exclusive tracks, fan passes, or special releases directly from creators.
Real‑world assets
Tokenized representations of things like real estate or luxury goods.
The technical standards
If you’re creating NFTs, you’ll choose a smart contract standard. As a collector, it still helps to know the difference between the two main ones. Where ERC‑20 covers fungible tokens, ERC‑721 and ERC‑1155 are the most common for NFTs.
ERC‑721
The classic unique NFTThe standard that powered the first NFT boom. Each token is unique, even if the artwork looks similar.
ERC‑1155
The flexible “multi‑token”A single contract can manage many token types—both fungible and non‑fungible—and batch them efficiently.
| Use case | ERC‑721 | ERC‑1155 |
|---|---|---|
| 1/1 artwork | Ideal choice. | Possible, but less common. |
| 10k PFP collection | Very common and widely supported. | Works well if you want batches or shared traits. |
| Game items & consumables | Fine for a few unique items. | Great for large sets and stackable items. |
| Loot boxes / packs | Less flexible. | Very efficient for bundles and random drops. |
Potential challenges & risks
Before you dive in, keep these points in mind so you can stay safe.
- Environmental impact: Ethereum is now Proof of Stake (much lower energy), but older debates and other chains may still raise concerns.
- Price volatility: NFT prices can spike or crash quickly. Never spend money you can’t afford to lose.
- Scams & phishing: Fake collections, look‑alike URLs, and wallet drainers are common. Always verify contract addresses and links.
- Bookmark official project and marketplace URLs.
- Double‑check contract addresses before buying.
- Use a separate wallet or hardware wallet for high‑value NFTs.
- Click random “airdrop” or “claim now” links in DMs.
- Sign wallet transactions you don’t understand.
- Treat NFTs as guaranteed investments or income.
Nothing in this guide is financial advice. Always do your own research and never risk money you can’t afford to lose.
