Nethermind's execution client implementation for Arbitrum is now public. Nethermind processes, on average, 1.4 Ggas/s on a typical Ethereum staking machine. With the Nethermind client on @arbitrum, we will be able to push the frontier of performance and throughput for Arbitrum chains. Where it stands: full node execution processing over 300M Arbitrum One archive blocks, with Stylus smart contract support. Correctness is validated by running Nethermind alongside Nitro's native execution layer in comparison mode. In progress: validator mode, sequencer support. The work should be visible and verifiable as it matures. http://github.com/NethermindEth/nethermind-arbitrum(Nethermind)