Ethereum Economic Zone unveils three cross-chain breakthroughs at Devcon

The Ethereum Economic Zone has announced three new demonstrations involving CoW Swap, Safe, and post-quantum signatures, showing how applications on Ethereum rollups can interact directly with the mainnet within a single transaction. Summary Ethereum Economic Zone announced three technical demonstrations at Devcon involving CoW Swap, Safe and post quantum signatures, with transactions coordinated between Ethereum mainnet and rollups. CoW Swap demonstrated how users on a rollup could execute trades using Ethereum mainnet liquidity and receive tokens within the same transaction without a separate bridge or additional signature. Safe demonstrated coordinated wallet ownership changes and treasury access across Ethereum networks, allowing account permissions to be updated and verified within a single transaction. Developers verified a Falcon post quantum signature on a rollup and used the result to authorise a mainnet transfer, with the team reporting a 91% reduction in gas consumption. In a November 4 announcement, the Ethereum Economic Zone (EEZ) team said the developments represent three firsts for synchronous composability between Ethereum’s base layer and its rollups, with live dem...