Can Ethereum make rollups feel like one network?

A trader in a Devcon demo signed one order on an Ethereum rollup, bought tokens using liquidity on mainnet and received them back on the rollup. The trade shows how users could reach a deeper market without moving funds themselves, an approach Gnosis is targeting for its default setup in spring 2027. Summary A trader signed 1 order on the experimental Rollup X network, and a CoW Swap solver filled it using Ethereum mainnet liquidity. The November 4 Devcon demonstrations also tested how a Safe wallet could use treasury permissions across networks. The team reported 91% lower gas use in its signature verification example, a result specific to that operation. Participating networks must produce proofs within Ethereum’s 12-second slot and follow Ethereum if it reorganises. Gnosis targets spring 2027 for making the design its default, which would bring it to a network with existing users and applications. The Ethereum Economic Zone team has demonstrated a trade in which a user signed one order on the experimental Rollup X network, a CoW Swap solver filled it using Ethereum mainnet liquidity, and the purchased tokens arrived back on the rollup. The demo shows how a trader could reach a d...