# @VitalikButerin: Best L2s lean into L1 security

Source: https://x.com/VitalikButerin/status/1945053518655619341
Kiwi News: https://news.kiwistand.com/stories/VitalikButerin-Best-L2s-lean-into-L1-security?index=0x6876bb4cc858df289e6d76e025308cc39b13758650c01e664951958e3d60cf8ef84ae284
Submitted by pedrovilela.eth on 2025-07-15 UTC, 4 upvotes, 1 comment

## Summary

Vitalik Buterin argues that the best L2s should rely more heavily on Ethereum L1's security, censorship resistance, proofs and data availability, reducing their own logic to acting as a sequencer and prover over core execution. He says this combines the trust minimization and efficiency that 2010s enterprise blockchain projects sought but never achieved. He also states that L1 features have already protected users' rights when problems occurred on an L2.

## Article

The best way to build an L2 is to lean into the L1's offerings (security, censorship resistance, proofs, data avail...) more, and reduce your logic to just being a sequencer and a prover (if based, just a prover) over the core execution.

This is the combination of trust minimization and efficiency that the 2010s enterprise blockchain crew wanted, but was never able to achieve. Now, with Ethereum L2s, you can achieve it. And we've already seen successful examples of the L1's features protecting users' rights if something on the L2 goes wrong.

## Comments

**@igem247**: I'm kind of new on here. How does it work?