Arbitrum is a layer-2 scaling solution for Ethereum that aims to improve the scalability and reduce the transaction fees of the Ethereum network. It is built on top of the Ethereum blockchain and is designed to enable fast and low-cost transactions for decentralized applications (dApps) and smart contracts.
Arbitrum Nova is the latest version of the Arbitrum network, which was launched in November 2021. It is an upgraded version that aims to further improve the scalability, security, and usability of the network. It uses a rollup architecture, which means that it batches transactions off-chain and only submits them to the Ethereum network when necessary, reducing the load on the main chain and enabling faster transaction processing.One of the key features of Arbitrum Nova is its compatibility with the Ethereum Virtual Machine (EVM), which means that existing Ethereum dApps and smart contracts can be easily ported to the Arbitrum network with minimal changes. This makes it easier for developers to take advantage of the benefits of Arbitrum without having to rewrite their code.
Arbitrum Nova is an AnyTrust chain that aims for ultra low transaction fees. Nova differs from Arbitrum One by not posting transaction data on chain, but to Data Availability Committee.