Optimism, a Layer-2 (L2) solution for Ethereum, is encouraging Layer-3 (L3) blockchains to join its Superchain by adopting its OP Stack and sharing sequencer revenue with the Optimism Collective.

The Superchain is a decentralized blockchain platform composed of multiple chains that share security and utilize a common technology stack (OP Stack). Notable L2 networks like OP Mainnet and Base are already part of this ecosystem.

L3 networks that become part of the Superchain would gain access to various benefits, including retroactive funding, airdrops, growth campaigns, and a supportive community of developers.

However, as these chains may deviate from the standard configurations of the OP Stack, certain features like interoperability may need to be adapted accordingly.

To facilitate the integration of L3 blockchains, Optimism has introduced two new features: custom gas tokens and plasma mode. Custom gas tokens allow L3 networks to customize their transaction fees, simplifying the onboarding process to the Optimism Superchain. Plasma mode offers developers the flexibility to choose their data availability layer, potentially reducing the costs associated with launching new networks.

The growing interest in L3 chains is evident, particularly after the success of projects like the Degen Chain. Optimism views L3 networks as vital for making the Superchain accessible to development teams with different needs and resources. However, some industry players, such as Polygon, express reservations about the potential impact on Ethereum's security posture and advocate for addressing existing issues within L3 frameworks before further development.