Optimism noted that Layer 3 chains can now join the Superchain by building on the OP Stack and sharing sequencer revenue with its governance body — Optimism Collective.

Layer 3 builders who join the Superchain will have access to retroactive funding, airdrops, and growth campaigns, along with a broad network of developers, Optimism said.

A Layer 3 chain is a network that settles on one of Optimism’s Layer 2 chains: OP Mainnet, Base, Mode, and others.

To support the integration of Layer 3s, Optimism has introduced two new features to the OP Stack: custom gas tokens — which allow chains to design their transaction fees – and Plasma Mode, a solution that allows chains to pick their own data availability (DA) layer.

Layer chains within the Superchain will deviate from the standard OP …