Developing NFT Smart Contracts

1. Introduction

This lesson covers the development of NFT (Non-Fungible Token) smart contracts on Ethereum using Solidity. NFTs have gained immense popularity for digital ownership, art, and collectibles.

2. Key Concepts

3. Development Process

Step-by-Step Guide

1. Set up a development environment (Node.js, Truffle, Ganache).
2. Create a new Solidity file for the NFT contract.
3. Implement the ERC-721 interface.
4. Deploy the contract to a test network.
5. Interact with the contract using Web3.js or Ethers.js.

Code Example

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract MyNFT is ERC721 {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIdCounter;

    constructor() ERC721("MyNFT", "MNFT") {}

    function mintNFT(address recipient) public {
        uint256 tokenId = _tokenIdCounter.current();
        _mint(recipient, tokenId);
        _tokenIdCounter.increment();
    }
}
            

4. Best Practices

• Use OpenZeppelin contracts for security and reliability.
• Implement proper access controls and permissions.
• Optimize gas usage to reduce transaction costs.

5. FAQ