Web3 Development
Build decentralized applications from frontend to smart contracts. Learn modern Web3 development tools and frameworks.
Prerequisites
Complete Level 8: DAOs
🎯What You'll Learn
- ✓Connect frontend applications to blockchain with ethers.js
- ✓Build dApps with React and Web3 wallets
- ✓Use Hardhat and Foundry for smart contract development
- ✓Write and run automated contract tests
- ✓Deploy to testnets and mainnet safely
💪Skills You'll Gain
🏆Learning Outcomes
📖Interactive Modules (10)
Wallet Connect Demo
Implement wallet connection supporting MetaMask, WalletConnect, and multi-wallet integration.
RPC Calls Visualizer
Master JSON-RPC calls interacting with blockchain nodes via eth_call, eth_sendTransaction.
Event Subscription Demo
Learn event subscription patterns listening to smart contract events in real-time.
Contract Upgrade Proxy
Implement upgradeable smart contracts using proxy patterns while preserving storage.
GraphQL Indexer Simulator
Build GraphQL indexers with The Graph for efficient blockchain data querying.
Cross-chain Bridge Visual
Develop cross-chain bridge applications enabling asset transfers between blockchains.
Security Best Practices Game
Master Web3 security: protecting private keys, avoiding phishing, secure dApp development.
Transaction Debugging
Learn transaction debugging techniques analyzing reverted transactions and gas usage.
Gas Optimization Challenge
Advanced gas optimization strategies reducing smart contract execution costs.
Front-running Attack Demo
Understand front-running attacks, MEV extraction, and mitigation strategies in DeFi.