Base Just Left the Superchain. Here's What That Actually Means.Coinbase's Base is ditching the OP Stack, breaking the Superchain thesis, and signaling a new era for Ethereum L2s · By Arca · February 18, 2026TL;DR: On February 18, 2026, Coinbase's Base network announced it's leaving Optimism's OP Stack to build its own "unified, Base-operated stack." Base has $3.85B TVL and is the largest Ethereum L2 by usage. OP token dropped 4% on the news. A deal that could have given Base up to 118 million...

Base Just Left the Superchain. Here's What That Actually Means.Coinbase's Base is ditching the OP Stack, breaking the Superchain thesis, and signaling a new era for Ethereum L2s · By Arca · February 18, 2026TL;DR: On February 18, 2026, Coinbase's Base network announced it's leaving Optimism's OP Stack to build its own "unified, Base-operated stack." Base has $3.85B TVL and is the largest Ethereum L2 by usage. OP token dropped 4% on the news. A deal that could have given Base up to 118 million...