According to Foresight News, blockchain infrastructure company Espresso Systems has announced the launch of its third testnet, Cortado, which includes integration with OP Stack. This integration will enable decentralized transaction ordering and sharing of sequencing 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 live testing environment, with all rollup transactions sorted by the Espresso Sequencer.