Optimistic Rollup
Protocol
Assumes correctness unless disputed.
Optimistic rollups assume validity by default and rely on fraud proofs during a challenge window to catch mistakes. This design scales throughput while inheriting security from L1 data posting.
Frequently asked questions
Why the dispute window?
It allows time for anyone to submit a fraud proof if a state transition is wrong.Why are withdrawals delayed?
Funds unlock after the challenge period. Bridges may offer faster exits with extra trust assumptions.How do apps adapt?
They design around delays, use message passing for fast intent, and document bridging options.