Our research collaboration with RISE Chain focuses on user protection and cost efficiency within the based rollup ecosystem.

RISE is a next-generation Layer 2. True to Ethereum’s vision, RISE reaches unprecedented scalability while maintaining security and decentralization. With technology optimizations such as parallel EVM, continuous execution and layered MPT; RISE is on track to surpass 100,000 transactions per second and 1 Gigagas per second, enabling blockchain to support mass adoption with near-instantaneous, low-cost transactions. This leap in performance will unlock the next generation of blockchain applications and global adoption.

Based rollups aim to decentralize L2s by leveraging Ethereum validators for transaction sequencing.

Preconfirmations in based rollups are commitments made by entities called preconfers. These commitments assure users that their transactions will be included in Ethereum, providing users with an experience similar to centralized sequencers.

Preconfers are subject to slashing if they fail to fulfill these commitments, providing a strong incentive for them to fulfill their promises and thus increasing user confidence in based rollup transactions.

Radius and RISE are partnering to enhance based rollups in the following areas:

1. User Protection in Based Rollups

   Based sequencing assigns sequencing rights to Ethereum validators. Without proper management, this could potentially expose users to censorship and harmful MEV (Extractable Value) risks.

   The encrypted mempool solution addresses this issue ensuring transactions are protected from censorship and frontrunning. This allows based rollup to enjoy composability Ethereum while protecting users from exploits.

   We refer to this type of preconfirmation as "encrypted preconfirmation" ensuring that users can enjoy the benefits of based rollups.

2. Cost Reduction for Based Sequencing

   It's a common belief that Based Sequencing is expensive—and right now, it kind of is! This perception was popularized by Taiko's initial loss-leading strategy, though we've recently seen Taiko begin to generate a steady profit. This is encouraging for the Based ecosystem, but there's still work to be done.

   While Based Sequencing currently costs more than centralized sequencers, there's significant potential for improvement.

   Batching Blocks: Centralized sequencers can batch compressed block data and optimally utilize all six blobs for each DA batch. Given that the intrinsic cost of blob transactions (21k gas) currently constitutes the majority of DA costs, maximizing the data in each transaction can significantly reduce expenses.

   Onchain Overhead: Some Based Sequencing designs require far more L1 transactions than necessary. For instance, each block might require proposal, proof, and bond transactions. There is considerable room to optimize these processes.

   Amortizing Costs Among Rollups: Based Sequencing offers a credibly neutral approach for deploying rollups into an open ecosystem. This opens up opportunities to amortize costs across multiple rollups that adhere to a common standard.

Our partnership with RISE improves user protection and cost efficiency for based rollup, potentially creating significant economic benefits for rollups through the blockspace network.

This network is designed to maximize revenue across the entire Ethereum ecosystem by efficiently capturing and distributing value within the network without negatively impacting users.

The diagram below illustrates the process flow from user transactions on rollups to Ethereum:

For more details, refer to our research article:
https://ethresear.ch/t/derivatives-market-for-implementing-based-sequencing/19593