protocol
Optimism activates Karst on 10 Superchain mainnets, ships L2CM and kona fault proofs
Karst (Upgrade 19) activated July 8 16:00 UTC across op, ink, zora, mode, lisk, metal, unichain, soneium, ethernity, tbn. Adds L2CM, promotes kona-client, ports five Osaka EIPs. op-geth EoS.