Arbitrum vs Linea

Arbitrum One and Nova are optimistic rollups using Nitro fraud proofs that compress transactions into calldata submitted to Ethereum. The Orbit toolkit lets projects deploy their own Arbitrum Orbit chains with configurable permissions. ARB token governance manages the 3 000‑plus validator whitelist and a 1 billion‑dollar ecosystem grant fund.

Linea is Consensys’ zkEVM rollup offering bytecode‑level equivalence with Ethereum and zero‑knowledge proofs generated by the Scroll‑inspired ‘Plonky3’ prover. The network is integrated directly into MetaMask, and sequencer fees can be paid in any ERC‑20 via a paymaster contract. Linea has secured over 200 million TVL and finalises proofs on mainnet every 10 minutes.