Arbitrum vs ICP

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.

The Internet Computer (ICP) is a Layer‑1 that runs WebAssembly ‘canisters’ directly on chain, with sub‑second query calls and 2‑second update finality. Boundary nodes translate HTTP requests into signed chain queries, enabling dApps to serve web front‑ends without traditional servers. ICP’s reverse GAS model bills cycles in stable dollar terms, shielding developers from token volatility.