Optimistic Rollups vs. ZK-Rollups: The Blockchain Scalability Debate

Optimistic Rollups and Zero-Knowledge (ZK) Rollups are the two primary Layer-2 scaling solutions for blockchains like Ethereum, aiming to increase transaction throughput and reduce costs. While both bundle transactions off-chain, they differ fundamentally in their validation mechanisms, leading to distinct trade-offs in speed, security, complexity, and user experience.