# Optimism and Arbitrum flip Ethereum in combined transaction volume
” Optimism and Arbitrum flip Ethereum in combined transaction volume “ Ethereum Layer-2 (L2) on-chain activity has been increasing to the extent that the leading two networks now process more transaction volume than the Ethereum network. Layer-2 networks Arbitrum and Optimism have seen an increase in transactions over the past three months. Comparatively, aside from…