Optimism core developers at OP Labs successfully activated the Isthmus hardfork today, bringing key features from Ethereum’s Pectra upgrade to the OP Stack and the Superchain. The upgrade comes just two days after Pectra went live on Ethereum, making the Superchain the first L2 ecosystem to support Pectra. Included in this upgrade is Base, Ink, OP Mainnet, Soneium, Unichain, and several other OP Stack chains. The Superchain powered nearly 70% of all L2 activity in April (measured by transacti...
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Jan 23, 2026, 9:04 AM
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