Blockchain

From fundamentals through smart contracts and security to protocol engineering and scalability.

• Beginner: Blockchain fundamentals — what is blockchain, key terms, consensus overview
• Beginner: Ecosystem — layer 1 vs layer 2, tokens, decentralized identity
• Intermediate: Smart contracts — design patterns, testing and deployment
• Intermediate: Security — code audit practices, pen-test workflow
• Advanced: Protocol engineering — consensus tuning, governance mechanisms
• Advanced: Scalability — rollups, sharding, interoperability