Overview
ZK-Rollups (Zero-Knowledge Rollups) are more complex but potentially more powerful than optimistic rollups. They provide 'validity proofs' rather than relying on a challenge period.
Benefits
- Instant Finality: No 7-day waiting period to withdraw funds to Layer 1.
- Efficiency: Only the proof and minimal data need to be stored on-chain.
- Security: Mathematically guaranteed validity of all transactions.
Popular Examples
- zkSync
- Starknet
- Polygon zkEVM