Arbitrum Nova

Nova is a new chain built on top of our AnyTrust technology, whereas Arbitrum One is the existing chain built on our optimistic rollup technology. The key technical differentiator is that whereas Arbitrum One puts all transaction data on Ethereum all the time, Nova makes use of a data availability committee. In doing so, Nova achieves significant cost savings by first sending the data to the committee and only falls back to putting data on-chain if the committee fails to do its job. Nova is an entirely new chain with a different set of assumptions and is designed for gaming, social applications and more cost-sensitive use cases.