New Directions in Rollup Technology: An Exploration of Based Rollup and UniFi Solutions

Rollup is a technology used for scaling blockchains, aimed at increasing transaction processing capacity and reducing costs. It alleviates the burden on the mainnet by processing a large number of transactions off-chain and then submitting the results for verification on the mainnet. Rollup is mainly divided into two types: Optimistic Rollup and Zero-Knowledge Rollup.

Recently, a new Rollup concept—Based Rollup has attracted industry attention. It mainly aims to improve the key role of the sequencer. The sequencer is responsible for the sorting and packaging of transactions from L2 to L1, but currently, centralized solutions are often used, which pose potential risks. Based Rollup shifts the sorting responsibility to L1, handled by Ethereum validation nodes, thus enhancing the degree of decentralization and security.

However, Based Rollup also faces efficiency bottlenecks. To address this, some projects have proposed optimization solutions, such as Puffer's UniFi. UniFi introduces a "pre-confirmation" mechanism, where Ethereum validators commit in advance to include specific transactions and set up a penalty mechanism to ensure compliance. This helps to increase transaction confirmation speed while maintaining decentralization.

UniFi also proposed the AVS solution, utilizing EigenLayer's Restaking technology to package UniFi as an AVS service. This facilitates the implementation of a pre-confirmation mechanism and creates new sources of revenue for Restaking.

Another major feature of UniFi is synchronous composability. Due to being based on L1 ordering, different UniFi Rollups can interact within the same block without the need for cross-chain bridges, helping to reduce liquidity fragmentation and providing a smoother user experience.

Overall, solutions like Based Rollup and UniFi have opened new directions for Rollup technology, seeking a balance between decentralization, efficiency, and security. They each have their advantages compared to existing Rollup solutions, suitable for different scenarios. This diversified exploration will drive the continuous development of blockchain scaling technologies, creating new possibilities for future applications.