Coinbase Base drops Optimism stack for unified solution
According to Coinbase, its Ethereum Layer 2 network Base is moving away from the Optimism stack in favor of its own unified core solution.
Base, the largest network in the Superchain OP Stack ecosystem, plans to transition to a proprietary foundational solution, citing the need to improve coordination and reduce costs. The company intends to replace external dependencies provided by OP Stack, Flashbots and Paradigm with a consolidated repository.
“Today, the code powering different components of Base, such as the sequencer, is owned by multiple teams and spread across several repositories, increasing coordination and maintenance costs. Our unified solution, base/base, built on open-source components like Reth, allows us to significantly simplify the component stack and optimize it directly for our use case,” Coinbase said.
According to the announcement, Base will remain a “Stage 1” rollup under Vitalik Buterin’s L2 decentralization classification model. In the short term, the chain will continue to maintain compatibility with the OP Stack specification. However, the team noted that Base node operators will need to migrate to the new Base client to remain compatible with future hard forks.
Transition coming soon
In the near term, Base plans to implement the Base V1 hard fork, which will add Fusaka support and replace Optimistic proofs with Base-specific TEE/ZK proofs. “Node operators will need to switch to releases from base/base instead of Optimism releases,” the team said.
Two additional hard forks are also planned to further reduce Base’s reliance on Optimism. Base V3 is expected to align with Ethereum’s upcoming Glamsterdam upgrade.
At the same time, the Base team emphasized that “unification does not mean isolation.” The protocol will remain public and openly specified, with alternative implementations welcomed and encouraged.
As we wrote, Base considers native token launch amid ecosystem growth and expansion
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