Base says it will leave Optimism's OP Stack for its own unified codebase

Coinbase/Base

Base said it would move from Optimism's OP Stack to its own unified, Base-operated codebase to cut coordination overhead and ship upgrades faster; node operators must switch clients before upcoming hard forks. OP Labs said the new stack still shares about 99% of its code with OP Stack.

• Base transitioning to unified, Base-operated stack to reduce coordination overhead and accelerate upgrade velocity
• New stack shares approximately 99% code with OP Stack and related infrastructure (Reth, Flashbots), per OP Labs CEO
• Node operators must migrate to Base's new client before hard forks; market reacted negatively with OP token decline