Radius

Radius is redefining how value is created, captured, and distributed across Ethereum by addressing a critical weakness in modern blockchain infrastructure: the trust gap in block building. While Ethereum promises decentralization, the systems that determine how blocks are built and which transactions get included often remain centralized, unaccountable, and closed off. Radius aims to close this gap by creating infrastructure where economic transparency and fair market access are defaults—not features.

The core philosophy of Radius is built on three principles: economic transparency, aligned markets, and resilient infrastructure. By embedding clarity into every layer of the value flow—from MEV to cross-rollup arbitrage—Radius ensures that no actor, especially block builders, operates in the shadows. Instead, it fosters equitable participation for everyone in the network: rollups, users, validators, and liquidity providers.

Radius offers a suite of modular products designed to coordinate interactions across Ethereum’s increasingly fragmented market landscape. The first of these is Lighthouse, a coordination layer that synchronizes MEV opportunities across rollups, exchanges, and L1 Ethereum. Lighthouse connects these markets, enabling seamless, real-time arbitrage and reducing inefficiencies caused by isolation. Then there's Secure Block Building (SBB), which delivers deterministic, open block construction to eliminate preferential transaction ordering and manipulation.

Another defining characteristic of Radius is its focus on composability. Each component is designed as a modular building block that can plug into various rollups and chains. This allows the Ethereum ecosystem to integrate Radius infrastructure incrementally or at scale—empowering builders to opt into transparency and alignment without replacing their existing tech stack.

In contrast to opaque actors in the MEV and block builder space—such as traditional searchers or relay operators—Radius provides a fully auditable, public-facing infrastructure layer that builds legitimacy for Ethereum’s economic engine. Its approach differs significantly from other players like Flashbots, who pioneered MEV auctions but still operate centralized relays. Radius instead enables permissionless coordination without privileged roles or hidden incentives, making it a clear innovator in Ethereum’s economic trust stack.

Radius delivers a range of infrastructure features designed to make block building transparent, fair, and aligned with Ethereum’s long-term goals:

• Economic Transparency: All value flows, transaction orders, and MEV interactions are observable and verifiable, increasing network integrity.
• Lighthouse Coordination Layer: Connects isolated rollups and liquidity venues to enable cross-market arbitrage and reduce fragmentation.
• Secure Block Building (SBB): Provides deterministic, open block construction that ensures fair ordering and reduces block-level manipulation.
• Modular Design: All components are composable, allowing easy integration with other infrastructure or rollup ecosystems.
• Aligned Value Capture: Profits from MEV and transaction ordering are distributed fairly, avoiding extraction by privileged insiders.
• Institution-Ready Infrastructure: Designed to meet the needs of regulatory-compliant, enterprise-scale users in the Ethereum space.
• Collaborative Ecosystem: Built in partnership with leading rollups and Web3 innovators, including protocols focusing on restaking, execution layers, and modular chains.
• Public by Default: Unlike traditional block builders, Radius creates systems where trust comes from code and visibility—not promises or private relationships.

Getting started with Radius is designed for builders, rollups, and developers looking to implement trust-centric block infrastructure:

• Learn the Protocol: Visit the Docs to understand how Lighthouse, SBB, and other components work within the Radius stack.
• Explore Use Cases: Review the Blog for real-world applications like MEV coordination, rollup economics, and restaking integrations.
• Start Building: Use the GitHub repositories to integrate Radius modules or run simulations. You’ll find open codebases ready for experimentation.
• Partner with Radius: Whether you run a rollup, DEX, or wallet app, you can reach out via the Get in Touch form to explore integration or research collaboration.
• Join the Ecosystem: Follow Radius updates and releases to stay aligned with new tools and protocol enhancements across Ethereum’s infrastructure layer.