Arbitrum Optimism

Architecture

Arbitrum Optimism represents a Layer-2 scaling solution for Ethereum, employing optimistic rollups to enhance transaction throughput and reduce gas fees. This architecture fundamentally alters the execution environment, shifting computation off-chain while maintaining Ethereum’s security through fraud proofs. The system relies on a dispute resolution mechanism where transactions are initially assumed valid, but can be challenged within a defined timeframe, necessitating proof of correctness. Consequently, this design prioritizes scalability without compromising the underlying security guarantees of the Ethereum network, facilitating more complex decentralized applications.