Optimistic Rollups

Optimistic Rollups are a way to improve the speed and reduce the cost of blockchain transactions by processing many transactions off the main chain and then submitting only summary data to it. They assume transactions are valid by default (hence "optimistic") but allow others to challenge and verify them if something seems wrong. If a dispute occurs, a process validates the transactions. This approach boosts throughput, reduces fees, and maintains security, making blockchain use more scalable without compromising trust or decentralization.