Optimism

Optimism is a Layer 2 scaling solution for Ethereum. It aims to improve transaction speeds and reduce costs on the Ethereum network by processing transactions off-chain and then bundling them back onto the main chain in a more efficient manner. It uses a technology called Optimistic Rollups, which assumes transactions are valid unless proven otherwise, streamlining the validation process.

Visit the following resources to learn more:

• @book@Optimism Explained: Layer 2 Scaling & How It Differs from Arbitrum
• @official@Optimism
• @official@Optimism Documentation
• @video@How To Use Ethereum Optimism L2 (2025)