Year-End Status: Base OP Stack Emerges and Initiates New Technological Era

By the end of 2026, Base has made a fundamental decision that will have a profound impact on the Ethereum Layer-2 ecosystem. Base is now moving away from OP Stack to build a standalone, Base-controlled technical infrastructure. This change is not just a technical upgrade but a strategic move for the network’s long-term independence and development pace.

Strategy Behind the Detachment from OP Stack

Initially, Base was designed to use OP Stack for quick deployment and to minimize initial risks. However, as the network evolved, multiple partner technologies—such as Optimism, Flashbots, and Paradigm—were integrated. This multi-faceted dependency created issues: coordination costs increased steadily, and protocol improvements slowed down.

As a solution, Base has created a new integrated repository called base/base. In this new framework, all core components will be bundled into a unified release. More importantly, Base will shift from three major upgrades per year to six smaller hard forks, enabling faster innovation and greater flexibility.

Seamless Transition for Node Operators and Developers

Under this new model, node operators will follow releases directly from base/base instead of the Optimism repository. However, Base has assured that existing RPC endpoints will remain operational and service disruptions will be avoided. During the transition, Base will continue collaborating with Optimism through its Enterprise Support services.

Committed to transparency, Base announced that all protocol specifics will be public and open source. This means independent teams can develop alternative clients following published standards. This approach maintains compatibility across scheduled hard forks and preserves the network’s decentralization layer.

2026: Strengthening Security and Expanding Roadmap

During this transition, Base will maintain its Stage 1 decentralized rollup stance while enhancing security. The network will add an additional independent signer to its security council and implement rapid response measures.

Base’s ambitious roadmap begins with client unification and proof system upgrades. Subsequent phases will include block access lists, new transaction types, and improvements aligned with Ethereum. Each change will be announced in advance and scheduled within pre-defined hard fork timelines.

The year-end status update reflects Base’s maturity and leadership ambitions within the Layer-2 ecosystem. Achieving technological independence, Base will be able to innovate rapidly and respond more effectively to the evolving needs of its community.