What Is Arbitrum (ARB)?
Arbitrum is a layer 2 scaling solution for Ethereum, designed to enhance scalability and reduce transaction costs by leveraging optimistic rollups. It operates as a sidechain, processing transactions off the Ethereum mainnet to increase throughput while retaining Ethereum's security. Arbitrum aims to alleviate congestion on the Ethereum network, enabling faster and more cost-effective transactions for decentralized applications (dApps) and users.