Arbitrum is a protocol that makes Ethereum transactions faster and cheaper. Developers use Arbitrum to build user-friendly decentralized apps (dApps) that can take advantage of the scalability benefits of the Arbitrum Rollup and AnyTrust protocols. https://medium.com/@arbitrum./arbitrum-airdrop-2023-step-by-step-guide-on-how-to-get-arb-tokens-fdc47486297d