![Optimism-Finally-Starts-Testing-Fault-Proofs-at-Heart-of-Design.jpg Tyler Spalding, CEO / Co-Founder, Flexa, 2Chainz and Zack Seward, Deputy Editor-in-Chief, CoinDesk](https://cryptotoptrends.com/wp-content/uploads/2024/03/Optimism-Finally-Starts-Testing-Fault-Proofs-at-Heart-of-Design-678x381.jpg)
Optimism and similar rollups aim to borrow their security from Ethereum, meaning recording transactions should be tantamount to writing transactions directly onto Ethereum. Optimism is currently the third-largest rollup network in terms of transaction volume, with $950 million in total deposits, according to DefiLlama. The chain’s technology also powers the second and fourth-largest layer-2 networks, Coinbase’s Base network and Blast, a buzzy newcomer to the rollup race.
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