Arbitrum vs CORE

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.

Core is an EVM Layer‑1 that merges delegated proof‑of‑stake voting with hash power from Bitcoin miners through the Satoshi Plus consensus. Validators bond CORE and lease BTC hash via a smart‑contract marketplace, aligning incentives between miners and token holders. The chain offers a native bridge to Bitcoin enabling one‑step transfers of cbBTC and supports Solidity smart contracts.