Wu has learned that the Ethereum Economic Zone (EEZ) has released three demonstrations of composability between Rollup X and the Ethereum mainnet: CoW Swap users can sign an order on Rollup X, complete the exchange using mainnet liquidity in the same transaction, and receive the tokens on Rollup X; Safe can simultaneously verify ownership changes of L1 and L2 accounts in a single transaction and merge the balance limits of multiple Safes for payments; the mainnet contract can call Rollup X to verify Falcon post-quantum signatures and authorize mainnet transfers accordingly in the same transaction. EEZ claims that the gas usage of the last demonstration is approximately 91% lower than direct verification on the mainnet. https://(wublock123.com)/news/ethereum-economic-zone-rollup-mainnet-composability-demos-71443