Arbitrum (ARB) perpetual market

Arbitrum is the leading Ethereum layer-2 scaling network, developed by Offchain Labs and launched in 2021. It is an optimistic rollup: it processes transactions off the main Ethereum chain in a cheaper, faster environment, then posts compressed data back to Ethereum, inheriting Ethereum's security while cutting fees dramatically. Optimistic rollups assume transactions are valid and allow a challenge window in which fraud can be proven, avoiding heavy computation on the base layer. Arbitrum became one of the largest homes for decentralized finance activity by total value locked, hosting many major protocols. Its ARB token, distributed in a large 2023 airdrop, governs the Arbitrum DAO, which oversees the protocol and a substantial treasury. Offchain Labs also offers Orbit, letting projects launch their own chains atop Arbitrum's technology, extending it into an ecosystem of interconnected layer-2 and layer-3 networks.