Base to Exit OP Stack and Launch Unified Network Software

• Base will move from Optimism’s OP Stack to its own base/base repo.
• New model introduces six smaller hard forks yearly and unified client releases for node operators.
• Base keeps specs open source, adds security upgrades, and maintains Stage 1 rollup status.

Base will shift away from the OP Stack over the coming months and adopt a unified, Base-operated software stack. The change was announced by Base, which runs as an Ethereum Layer-2 network. The move affects node operators, developers, and upgrade scheduling across the network.

Why Base Is Reworking Its Core Infrastructure

Base launched using the OP Stack to accelerate deployment and reduce early technical risk. Over time, however, the network integrated software from multiple partners, including Optimism, Flashbots, and Paradigm. According to Base, these dependencies increased coordination costs and slowed protocol changes.

As a result, Base decided to consolidate its infrastructure into a single repository called base/base. This unified stack will package all core components into one official release. Notably, the network plans six smaller hard forks annually, instead of three larger upgrades.

What Changes for Node Operators and Developers

Under the new model, node operators will follow releases from base/base rather than Optimism repositories. However, Base said existing RPC endpoints will remain supported to avoid breaking integrations. During the transition, Base will continue working with Optimism through OP Enterprise support services.

Importantly, Base said the protocol specifications will remain public and open source. Independent teams may still build alternative clients, provided they follow published standards. Base stated that this structure preserves compatibility across scheduled hard forks.

Security, Decentralization, and Upgrade Roadmap

Base confirmed it will maintain its Stage 1 decentralized rollup status throughout the transition. The network will also add an independent signer to its security council. Additionally, Base plans faster withdrawal mechanisms, Base-specific governance tools, and updated proof systems.

The roadmap includes multiple upgrades, starting with client consolidation and proof enhancements. Later releases introduce block access lists, new transaction types, and Ethereum alignment upgrades. Base said all changes will be announced in advance and deployed during scheduled forks.