# Optimistic Rollups: Scaling Ethereum with Off-Chain Transaction Processing

**Published by:** [Jeremy Omly](https://paragraph.com/@jeremy-omly/)
**Published on:** 2024-06-24
**URL:** https://paragraph.com/@jeremy-omly/optimistic-rollups-scaling-ethereum-with-off-chain-transaction-processing

## Content

Optimistic Rollups are a Layer 2 scaling solution for Ethereum, enhancing transaction throughput and reducing fees by processing transactions off-chain. They operate on the principle of optimistic execution, assuming transactions are valid unless proven otherwise by a fraud proof. This approach allows for faster transaction confirmations and significantly lower costs compared to on-chain operations. Optimistic Rollups achieve scalability by aggregating multiple transactions into a single batch, thereby increasing Ethereum’s network capacity while maintaining security through periodic validation on the main Ethereum blockchain.

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