NFT Fundamentals
Non-Fungible Tokens (NFTs) are unique digital assets stored on blockchain. Each NFT has a unique identifier and ownership record that cannot be duplicated. The ERC-721 standard (Ethereum) and BEP-721 (Binance Smart Chain) are the most common NFT smart contract standards.
Smart Contract Development
NFT smart contracts define the rules of ownership, transfer, and royalties. Write contracts in Solidity for Ethereum/Polygon. A basic ERC-721 contract includes: mint function, transfer function, ownership mapping, and tokenURI for metadata. Use OpenZeppelin's audited contracts as a base.
IPFS for NFT Storage
NFT metadata (images, attributes) should be stored on IPFS (InterPlanetary File System) — a decentralized storage network. Use Pinata or NFT.Storage for pinning your files. Avoid storing NFT images on centralized servers — if the server goes down, the NFT becomes worthless.
Marketplace Features
A complete NFT marketplace needs: wallet connection (MetaMask, WalletConnect), NFT minting, listing/delisting, fixed price and auction sales, royalty distribution, search and filter, and creator profiles. Use OpenSea's Seaport protocol for efficient on-chain trading.
Gas Optimization
Ethereum gas fees can make NFT transactions expensive. Use Polygon (Layer 2) for low-fee minting and trading — gas fees are under ₹1 vs ₹500-5,000 on Ethereum mainnet. Implement lazy minting (mint only when purchased) to reduce costs for creators.
Need Help With Your Project?
Our team of experts is ready to help you build exactly what you need — on time and within budget.
Get Free Consultation