Introduction
With Ethereum L1 mainnet gas fees hitting a 5-year low, many projects are reconsidering deployment on L1. This raises a critical question: What core problem does L2 solve today?
The blockchain "impossible triangle"—security, decentralization, and scalability—remains a key challenge. Vitalik Buterin emphasizes that trade-offs among these three are inevitable.
L2 solutions aim to address this by:
- Securing state summaries on L1 via the mainnet.
- Decentralizing sequencers to minimize central points of control.
- Enhancing scalability through off-chain execution.
While OP Rollups and ZK Rollups dominate discussions, Based-Rollup offers a novel alternative. Proposed by Vitalik Buterin and championed by projects like Taiko, Based-Rollup redefines L2 architecture by limiting sequencer power.
The Power Struggle in L2 Sequencers
In traditional OP systems, sequencers wield significant influence:
- They prioritize transactions (enabling MEV exploitation).
- They can profit from MEV without malicious intent.
Solutions vary:
- Arbitrum enforces strict first-come, first-served rules.
- Optimism taxes MEV as a free-market practice.
- Metis advocates decentralized sequencers.
👉 Explore how Based-Rollup disrupts this dynamic
Based-Rollup: A Radical Shift
Based-Rollup eliminates sequencer overreach by delegating sorting to Ethereum L1. Here’s how it works:
Step-by-Step Process
- L2 Searchers bundle transactions and forward them to L2 block builders.
- L2 Builders construct the block.
- L1 Searchers embed the L2 block into an L1 block.
Notably, the L1 searcher and L2 builder can be the same entity. This leverages L1’s excess computational capacity to fortify L2 security—like a deputy governor (L1) doubling as a mayor (L2).
Taiko’s Innovation: Based Booster Rollup (BBR)
After a year of development post-TGE, Taiko introduces Based Booster Rollup (BBR), which mirrors L1’s properties for enhanced efficiency. Key features:
- Resource Optimization: Uses L1’s idle capacity.
- Security Synergy: Inherits L1’s robustness.
(Detailed analysis of BBR will follow in a future article.)
FAQ
1. What distinguishes Based-Rollup from OP/ZK Rollups?
Based-Rollup delegates sorting to L1, reducing sequencer power, whereas OP/ZK rely on L2 sequencers.
2. How does Based-Rollup handle MEV?
By integrating with L1, it minimizes MEV risks inherent in centralized sequencers.
3. Why is Taiko’s BBR significant?
BBR extends Based-Rollup’s efficiency by fully aligning L2 with L1’s security and performance.
👉 Learn more about L2 innovations
Conclusion
Based-Rollup redefines L2’s power dynamics by anchoring sequencing in Ethereum L1. Projects like Taiko further evolve this model with BBR, blending scalability and security. As L2 ecosystems mature, such innovations will shape the future of decentralized infrastructure.
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