Sunny Aggarwal, the co-founder of the Cosmos-based Osmosis exchange, explained to CoinDesk, “Almost every rollup platform right now is all single operator – whether it’s Arbitrum, Optimism or StarkWare.” In other words, one company or computer, rather than a distributed network of node operators, is responsible for bundling up the transactions that eventually get passed down from the layer 2 chain to the mainnet.
