Arbitrum vs Ronin

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.

Ronin is a delegated proof‑of‑authority sidechain built for gaming, best known for powering Axie Infinity. After the 2022 bridge exploit, Ronin migrated to a 17‑validator set with hardware‑signing requirements and added zkSync‑powered zkRonin bridges for withdrawals. The chain supports ERC‑721 and ERC‑1155 NFTs and charges near‑zero fees denominated in RON.