From the preconfirmation mechanism to Booster Rollup, the cutting-edge practices promoted by Taiko are outlining a truly scalable, practical, and global future for Ethereum— and this is just the beginning.

As global developers gather in Paris for EthCC 2025, Taiko—the first based rollup scaling solution on Ethereum—successfully held the second Based Rollup Summit in early July in Cannes, France, continuing the exploration of Ethereum's scaling future.

Core figures from the Ethereum Foundation, Celo, SSV Network, Boundless, and other ecosystems engaged in in-depth discussions around based rollup technology, preconfirmation mechanisms, and the evolving Ethereum ecosystem.

Here are 10 key takeaways from the summit:

1. Preconfirmation is everywhere— even when buying coffee

Taiko's Chief Operating Officer Joaquin Mendes opened the summit with a relatable example, emphasizing that preconfirmation is not a foreign concept but a mechanism we use every day.

“Preconfirmation has always existed; even when you buy a cup of coffee, you are using it.”

Mendes elaborated on how the preconfirmation mechanism works and how it enhances the transaction experience for users on Taiko, laying the groundwork for understanding its critical role in Ethereum's scaling.

2. The future of ZK: Instead of competing on technology, focus on solving user needs

Boundless CEO Shiv Sankar shared his views on the future of zero-knowledge technology, emphasizing that what truly matters is not technological competition but whether value can be created for users.

“The key is to understand what users really need— and then use ZK technology to meet those needs.”

He pointed out that Web3's main competitors are not other chains but traditional tech giants like Amazon. The real challenge lies in understanding user behavior and creating products they are willing to pay for.

3. URC integration makes it easy for validators to access based services

SSV Network CEO Alon Muroch introduced the Universal Registry Contract (URC) and explained how SSV lowers the registration threshold for validators through programmatic integration, enabling their participation in based rollup services.

“Now, most transactions occur on L2, not the Ethereum mainnet. This presents a huge opportunity for both validators and rollups.”

The SSV client has integrated URC, allowing validators to quickly complete registration without cumbersome operations, whether managing 10 nodes or 10,000 nodes, the process remains smooth.

4. Why can't Ethereum simply shorten block times, and why is the preconfirmation mechanism important?

Taiko CEO Daniel Wang addressed a common question: If the goal is a faster user experience, why not simply shorten Ethereum's block time to 1-2 seconds?

“Taiko aims to compress block time from 12 seconds to below 2 seconds. But some may ask, why doesn't Ethereum do this itself?”

He pointed out that Ethereum currently has over a million validators, and sub-second consensus would place extremely high demands on hardware and synchronization, likely compromising its decentralization and accessibility. Therefore, based preconfirmation is a more realistic and Ethereum-aligned solution.

5. What are the success metrics for defining based preconfirmation?

Several attendees proposed key metrics for measuring the success of based preconfirmation:
For instance, a based rollup that is operational, with preconfirmation functionality integrated into the L1 proposer, and at least 20% of staked assets choosing to participate.

Additionally, a decrease in transaction fees and an optimized user experience were also considered core signals for assessing the feasibility of the solution.

6. A future built for enterprises and privacy

Ethereum Foundation Co-Executive Director Tomasz K. Stanczak emphasized that the strategic focus for mainstream adoption should be on enterprise implementation and privacy protection.

“We are not building products directly for users. Ultimately, users will access through Web2 platforms, and the underlying must be a truly trustworthy blockchain.”

He believes that supporting enterprise participation and promoting compliant collaboration is the key pathway to unlocking global mainstream markets.

7. The story of Ethereum needs to be told better

Celo CEO Marek Olszewski posed a thought-provoking question:

“Are we attracting the wrong audience?”

He stated that to attract institutional investors and ordinary users, Ethereum needs to present a clearer and more compelling narrative—not just as a "smart contract platform," but as an asset ecosystem that truly delivers value and returns.

8. Horizontal scaling is the only future for Ethereum's expansion

Ethereum Foundation researcher Justin Drake clearly stated that vertical scaling for Ethereum has reached its limits, and the next step must be horizontal expansion.

“We must scale horizontally; there is no other choice. Even if we gain another second, it won't be enough.”

He believes that solutions like shared sequencing and cheaper SNARK verification will enable rollups to settle in every gap, thus moving Ethereum out of its "adolescence."

9. Booster Rollup: A new paradigm for scaling

Taiko co-founder and CTO Brecht Devos introduced the new concept of Booster Rollup, emphasizing how this type of rollup differs from traditional solutions.

“The vast majority of contracts are deployed on L1, but each rollup can directly link to the mainnet.”

This means that L1 contracts can be directly called on L2, achieving automatic scaling without sacrificing composability.

10. True scalability is internet-level usability

At the end of the summit, Avail's business lead Kyle Rojas, OpenZeppelin's Gastuvo, and Luban co-founder Harry Gao discussed a fundamental question: What are we really scaling for?

“Can we truly scale to the level of the internet? Can we support the kind of user experience that ordinary users are accustomed to?”

They unanimously agreed that true blockchain scaling is not just about increasing TPS but about establishing a globally usable system that upholds decentralization, censorship resistance, and security.

In conclusion

In addition to technical insights, Taiko's Base Rollup event also featured interactive experiences, allowing attendees to personally try out on-chain games built on Taiko technology, showcasing the fun and vitality beyond the "hardcore" of blockchain innovation.

From the preconfirmation mechanism to Booster Rollup, the cutting-edge practices promoted by Taiko are outlining a truly scalable, practical, and global future for Ethereum— and this is just the beginning.

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