✅ You Can Create & Mint NFTs
Master ERC721, IPFS metadata, and launch your own NFT collection
Your Progress
0 / 5 completed🎯 Key Takeaways
Congratulations! You now understand how NFTs work, from smart contracts to storage to minting.
📚 Summary
🎨
NFT Basics
- •Each NFT has a unique token ID
- •ERC721 is the standard for NFTs
- •Cannot be divided (unlike ERC20)
- •Perfect for art, collectibles, gaming
📜
Smart Contract
- •Stores ownership mapping (ID → address)
- •Implements transfer/approval functions
- •Links to off-chain metadata
- •Deploys once, mints many times
☁️
Storage
- •IPFS: Most popular (needs pinning)
- •Arweave: Permanent (one-time cost)
- •On-chain: Expensive but permanent
- •Centralized: Cheap but risky
⚡
Minting
- •4 steps: Art → Storage → Deploy → Mint
- •~$100-300 to deploy contract
- •~$10-50 per NFT minted
- •Use L2 for 100x cheaper costs
🧠 Interactive: Knowledge Quiz
Test your understanding of NFT minting:
1. What makes NFTs different from regular tokens (ERC20)?
2. Why is most NFT data stored off-chain (IPFS) instead of on-chain?
3. What does the tokenURI() function return?
4. Which storage solution offers permanent, guaranteed storage for 200+ years?
5. Approximately how much gas does it cost to mint 1 NFT on Ethereum mainnet?
📖 Quick Reference
| Function | Purpose | Gas Cost |
|---|---|---|
| mint() | Create new NFT | ~100k |
| transferFrom() | Transfer NFT ownership | ~50k |
| approve() | Allow transfer by another address | ~25k |
| ownerOf() | Get NFT owner | Free (read) |
| tokenURI() | Get metadata URL | Free (read) |
| balanceOf() | Count NFTs owned | Free (read) |
💡
Next Steps
- •Try minting on testnets (Goerli, Sepolia) for free practice
- •Use OpenZeppelin's ERC721 template for production contracts
- •Consider L2 solutions (Polygon, Arbitrum) for lower costs