ChainCatcher news, blockchain infrastructure company Espresso Systems announced the release of its third testnet, Cortado, which includes integration with the OP Stack.It is reported that this integration will enable decentralized transaction ordering and share ordering with other rollups, enhancing interoperability. In the coming weeks, Espresso will continue to collaborate with Caldera to deploy a publicly hosted testnet, including the OP Stack rollup. Users and developers will be able to deploy test contracts, submit transactions, and interact with applications in a real-time testing environment, where all rollup transactions are ordered by the Espresso Sequencer.