PANews reported on November 12 that according to CoinDesk, 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.

Espresso Systems CEO Ben Fisch said that this confirmation layer ensures that the block data released by Rollup cannot be changed once released, providing higher security for cross-chain protocols and applications. In addition, this confirmation layer will be gradually integrated into major Rollup ecosystems such as Arbitrum, Optimism and Polygon to accelerate the development of cross-chain composability. Espresso completed a $28 million Series B financing in March, led by a16z Crypto .