By Radius, Symbiotic, and Avail

After launching Secure Block Building (SBB) on Symbiotic Mainnet, we wanted to do something different: put SBB to the test in a real rollup environment.

The rollup economy is growing fast, but to truly scale, rollups need sustainable profits and user protection. Today, we’re announcing the launch of Secure Block Building (SBB) on Symbiotic Mainnet: a foundational step toward making this possible.

Today, we’re excited to announce we’ve raised $7M in seed funding, led by Pantera Capital.

Written by Chanyang Ju (@woojucy), Researcher at Radius, with special thanks to Tariz (@Hyunxukee), Co-Founder at Radius, for feedback. We also thank the speakers at Sequencing Day for sharing insights on the protocols they’re building.

This blog series explores the evolution of Proposer-Builder Separation (PBS) within Ethereum and how Radius brings a new perspective to PBS in the Layer 2 (L2) ecosystem through its Blockspace Network. PBS has become a key concept for improving block production efficiency and decentralization in Ethereum. The article first looks at PBS’s development in Layer 1 (L1) Ethereum, then shifts focus to how Radius aims to optimize L2 revenue through the Blockspace Network, contributing to the broader ecosystem.

This blog series explores the evolution of Proposer-Builder Separation (PBS) within Ethereum and how Radius brings a new perspective to PBS in the Layer 2 (L2) ecosystem through its Blockspace Network. PBS has become a key concept for improving block production efficiency and decentralization in Ethereum. The article first looks at PBS’s development in Layer 1 (L1) Ethereum, then shifts focus to how Radius aims to optimize L2 revenue through the Blockspace Network, contributing to the broader ecosystem.

This blog series explores the evolution of Proposer-Builder Separation (PBS) within Ethereum and how Radius brings a new perspective to PBS in the Layer 2 (L2) ecosystem through its Blockspace Network. PBS has become a key concept for improving block production efficiency and decentralization in Ethereum. The article first looks at PBS’s development in Layer 1 (L1) Ethereum, then shifts focus to how Radius aims to optimize L2 revenue through the Blockspace Network, contributing to the broader ecosystem.

For rollup developers seeking decentralized sequencing and fast finality, Radius AVS and Nuffle Fast Finality Layer (NFFL) provide a powerful, unified solution.