⛓️ Blockchain & Bitcoin Series *coming soon
Course overview
Lesson Overview

6.44 – Rollups: Optimistic vs. ZK: Rollups aggregate transactions off-chain before submitting compressed data to main networks. Optimistic rollups assume transactions are valid until challenged, while ZK rollups use cryptographic proofs for instant verification. Both approaches drastically reduce congestion and gas fees. Choosing between them depends on speed, security, and complexity needs. Rollups are central to scaling Ethereum and similar ecosystems. They represent blockchain’s pragmatic path toward efficiency and widespread usability.

About this course

A complete 300+lesson journey from blockchain basics to advanced cryptocurrency trading, security, legal compliance, and cutting-edge applications. Perfect for both beginners and experienced crypto enthusiasts.

This course includes:
  • Step-by-step trading and investing strategies
  • Insights into emerging blockchain trends and technologies
  • Visual explanations and real-world examples

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