Description

Here's how it works:

1. Layer 2 Solution: It works on top of Ethereum to handle transactions more efficiently.
2. Optimistic Rollup Technology: Arbitrum uses this to perform complex computations off the main Ethereum chain, boosting transaction speed and lowering costs.
3. Security: It has a challenge system to keep computations accurate. If a validator's computation is wrong, they lose a staked bond.
4. Ethereum Compatibility: Arbitrum works seamlessly with Ethereum, so developers can use it without changing their smart contracts.

In summary, Arbitrum aims to make Ethereum faster and cheaper while keeping it secure and easy for developers to use.