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Coinbase will abandon Optimism's OP Stack – the modular 
Ethereum Layer 2 blockchain framework that has powered the Base blockchain for more than three years – in favor of a new, "unified stack" for Base Chain.
What's the Scoop?
- Unified Stack: In a blog post titled "Next Chapter for Base," the Base Engineering Team detailed its plans to take more control over Base Chain's code and infrastructure by departing from the modular OP Stack framework. The new Base Chain "unified stack" will consolidate all dependencies and upgrades into a single GitHub repository.
- Radical Shift: By centralizing the technical development of Base Chain, the Base Engineering Team hopes to accelerate development progress and reduce inter-developer communication. This approach clashes with the OP Stack’s positive-sum ethos, which sought to accelerate progress through open collaboration and decentralized development.
Optimism Declines: While Base will a client of Optimism Labs under its OP Enterprise: Mission-Critical Support plan, the shift nevertheless markes a meaningful blow to the Optimism ecosystem. OP tokens were down 5.5% on the day at the time of writing.
What's the Take?
Just over a year ago, the OP Stack appeared to be the clear victor among L2 scaling schemes, securing numerous top-tier blockchain integrations that seemed to cement its status as crypto’s dominant scaling framework.
Base's departure shatters that once illustrious aura.
It's important to remember that Coinbase is a profit-maximizing public company, not a steward of ecosystem ideology. While Base's relationship with Ethereum does not yet appear in jeopardy, it’s naïve to assume Coinbase won't explore alternative architectures if the economics made more sense.
A new, unified stack for Base Chain
— wilson.base.eth (@WilsonCusack) February 18, 2026
Excited to share that we are evolving our technical roadmap, consisting of our own spec, code, and infra to accelerate the foundation of Base. This shift gives us the autonomy to ship protocol improvements more frequently and focus our…
