Optimism Cycle 19 Security Review

Security Review of Optimism’s L1 Upgrade Process (Cycle 19)

Cantina partnered with Optimism, a modular Layer 2 built for Ethereum scalability, to review the smart contract upgrades introduced in Cycle 19. This review focused on implementation and initialization patterns related to the protocol’s L1 upgrade infrastructure, with an emphasis on proxy reuse, config consistency, and long-term compatibility with the MCP (Multi-Chain Protocol) architecture.

As Optimism continues to evolve its modular stack for secure and cost-efficient deployments, this audit reinforced the integrity of its upgrade pathways—ensuring safety across governance, bridges, and system configurations. The engagement reflects Optimism’s ongoing commitment to production-grade L2 infrastructure.

The review was conducted through Cantina’s security audits offering. To learn how teams like Optimism enhance protocol safety through bug bounty programs and crowdsourced security competitions, explore Cantina’s broader security ecosystem.