Arbitrum is a second-layer scaling solution based on Ethereum. This solution is designed to increase Ethereum's transaction volume and aims to provide faster and lower-cost transactions.

Arbitrum consists of two main components, Arbitrum One and Arbitrum Rollup. Arbitrum One is a fully decentralized solution and uses Zero-Knowledge SNARK technology to handle disputed situations. Arbitrum Rollup, while being decentralized, is not as fully decentralized as Arbitrum One. Arbitrum Rollup operates as transaction batches that take up less space on the Ethereum chain and operate with lower transaction fees.

Arbitrum supports smart contracts and can run existing Ethereum smart contracts written in the Solidity programming language. Additionally, it allows users to use their Ethereum addresses to interact with the Arbitrum network.

Arbitrum has emerged as a solution to Ethereum's scalability issues and has garnered significant interest from the Ethereum community.

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