Base, the Ethereum Layer 2 network incubated by Coinbase, announced that it will no longer rely on Optimism's OP Stack and Superchain architecture, instead adopting a "unified stack" operated by Base itself. According to the official blog, Base will integrate core components (including key modules such as the sorter) previously scattered across multiple teams and code repositories, migrating them to a unified codebase "base/base" to reduce coordination and maintenance costs and to perform deep optimizations tailored to its own needs. At the same time, Base will also reduce its reliance on external libraries such as Flashbots and Paradigm. At the governance level, Base will adjust its security committee structure, replacing the original Optimism-related seats with new independent signatories. Despite the shift to a more autonomous technical architecture, Base stated that its protocol will remain open-source and publicly accessible, welcoming third-party development of independent clients and maintaining cross-upgrade compatibility. Base is currently the largest network in the OP Stack Superchain ecosystem.