Welcome to Arbitrum (Offchain Labs)
Arbitrum is a layer-2 solution project aimed at improving the speed and scalability of Ethereum smart contracts while providing additional privacy features. It allows developers to execute unmodified Ethereum Virtual Machine (EVM) contracts and transactions at layer-2 while maintaining Ethereum's layer-1 security. It was created to address some of the shortcomings of current Ethereum-based smart contracts, such as long transactions and high execution costs.