Overview
$ARB Arbitrum is a Layer 2 scaling solution for Ethereum, designed to enhance its scalability and efficiency. It utilizes rollup technology to increase throughput and reduce transaction costs while maintaining Ethereum's security. Arbitrum is a suite of Layer-2 scaling solutions for Ethereum, with two live and operational Layer-2 blockchains, Arbitrum One and Arbitrum Nova.
Arbitrum One is a general-purpose optimistic rollup allowing individuals to deploy decentralized applications and smart contracts permissionlessly. Arbitrum Nova is also an optimistic rollup that allows any individual to permissionlessly deploy on, but with a focus on gaming and social applications.
History
Offchain Labs was founded in 2018 by Ed Felten, Steven Goldfeder, and Harry Kalodner to build scalability solutions for Ethereum. Offchain Labs introduced Arbitrum as its core scalability solution on April 15, 2019. In February 2020, Arbitrum went live on testnet before being opened to all participants in October 2020. In May 2021, Arbitrum went live on mainnet for developers.
