Optimism’s Superchain now supports Layer 3 chains via OP Stack.

Optimism has expanded its Superchain framework so that developers can now deploy Layer 3 (L3) chains using the OP Stack, extending what was previously focused on Layer 2 rollups into a multi-layer architecture. According to Optimism’s announcement on X, L3s can be built on top of existing OP Stack chains within the Superchain, enabling app-specific or highly customized execution environments that still inherit security from Ethereum via the underlying L2. This effectively turns the Superchain from a network of L2s into a broader hierarchy of rollups. The OP Stack is an open‑source, modular rollup framework originally designed to power Optimism Mainnet and other OP Stack chains (such as those in the Superchain) as Ethereum Layer 2s. The Superchain vision is to connect many OP Stack chains that share common infrastructure for security, bridging, governance, and upgrades, making them interoperable while scaling Ethereum. Extending support to L3s fits this thesis by allowing developers to create more specialized or higher‑throughput chains—such as application‑specific rollups or ecosystem “micro‑chains”—that plug into the same shared infrastructure and security assumptions. This matters because it broadens Optimism’s role as a base infrastructure layer in Ethereum’s scaling roadmap and intensifies competition among modular rollup stacks, as other ecosystems also experiment with L2/L3 hierarchies.

✨ AI-generated background, compiled from web sources — not editorial content.

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