Smart Contracts

Write, deploy, and audit smart contracts on EVM chains

3 chapters 10 lessons 103 min total

Blockchain Basics

3 lessons · 26 min
FREE
How Blockchain Works
Blocks, hashing, consensus mechanisms
10 min FREE
Ethereum and EVM
Understanding the Ethereum Virtual Machine
8 min FREE
Gas and Transactions
How transactions are processed and priced
8 min

Writing Smart Contracts

4 lessons · 40 min
5 credits
Solidity Syntax
Variables, functions, and modifiers
12 min
Storage and Memory
Understanding data locations in Solidity
10 min
Events and Logging
Emitting events for off-chain tracking
8 min
Inheritance and Interfaces
Contract composition patterns
10 min

Security and Auditing

3 lessons · 37 min
5 credits
Common Vulnerabilities
Reentrancy, overflow, and access control
15 min
Testing Smart Contracts
Unit tests with Hardhat and Foundry
12 min
Audit Checklist
Systematic approach to contract review
10 min