Odaily News The blockchain project Espresso announced that its core product "confirmation layer" has been launched on the mainnet, providing key infrastructure for cross-chain composability. The confirmation layer allows different Rollup networks to read and trust each other's transaction data, thereby accelerating cross-chain asset bridging, decentralizing the key component "sequencer" in Rollup, and achieving low-cost transaction data storage. According to previous news, Espresso completed a $28 million Series B financing in March, led by a16z Crypto. (Coindesk)