What Is Arbitrum (ARB)? | Ethereum’s Layer 2 Scaling Solution Explained

⚡ What Is Arbitrum (ARB)? Arbitrum is one of the most successful Layer 2 solutions for Ethereum — designed to make transactions faster, cheaper, and scalable without sacrificing Ethereum’s security. In this ChainBrief episode, we break down how Arbitrum works, what Optimistic Rollups actually are, and whether Arbitrum is the future of DeFi infrastructure. ✅ Up to 95% lower gas fees ✅ Powered by Optimistic Rollups ✅ Used by Uniswap, GMX, Aave, and more ✅ DAO governance via the ARB token But it’s not perfect — from centralization to fraud windows and slow withdrawals, Arbitrum has challenges too. Want to actually understand how Ethereum can scale? This is your no-hype breakdown. 📺 Watch past episodes: Cosmos, Avalanche, Polygon, XRP #arbitrum #arb #ethereum #layer2 #cryptoexplained #blockchain #rollups #chainbrief #defi