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Optimism Stack

Definition

The Optimism stack refers to a specific set of technologies and protocols used to build and operate the Optimism layer-2 scaling solution for Ethereum. This stack comprises components designed to increase transaction throughput and reduce fees on the Ethereum mainnet. It leverages optimistic rollups, which assume transaction validity by default and only require proof of fraud to challenge incorrect state transitions. This design choice significantly impacts network performance and cost-effectiveness.