Ethereum co-founder Vitalik Buterin has issued a strong caution to developers of rollup-based L2 systems solutions, emphasizing that prioritizing decentralization without robust security measures could lead to significant financial losses.
In a recent post, Buterin highlighted the importance of reaching stage 2 in an L2 network for security. He stressed the need to enhance the underlying proof system, stating that rushing to stage 2 without improving proof reliability could increase the risk of failure.
One of Buterin’s concerns is the reliance of many rollups on centralized control mechanisms, which he likened to “training wheels.” While initially helpful, these mechanisms can become single points of failure unless replaced with decentralized alternatives.
Daniel Wang proposes adding a “BattleTested” label to Layer 2 roll-ups
Responding to Buterin’s post, Loopring founder and CEO Daniel Wang suggested introducing a separate label, “BattleTested,” for Stage 2 roll-ups to enhance security.
Wang proposed criteria for a roll-up to earn the BattleTested label, including having its code on Ethereum’s mainnet for over six months and maintaining a significant Total Value Locked (TVL).
He also recommended that the BattleTested status should be subject to renewal, requiring the roll-up to undergo the qualification process again for any changes made.
Furthermore, Wang noted that a roll-up could qualify for the BattleTested label regardless of its stage, emphasizing the importance of the underlying proof system for security.
Buterin emphasizes the importance of strong proof systems for rollups to reach stage 2
In another post, Buterin elaborated on the optimal timing to transition to stage 2 in a mathematical model, emphasizing the need for a dependable proof system.
He argued that as the quality of the proof system improves, the optimal stage for rollups shifts from Stage 0 to Stage 1 and eventually to Stage 2, highlighting the importance of reliability in the proof system.
Buterin suggested that using multi-sig proof systems could reduce the risk of system failures, emphasizing the significance of strong proof systems for advancing to stage 2.
Additionally, Mike Tiutin, CTO of PureFi, warned against premature decentralization, stating that it could compromise system security. Likewise, Kronos analyst John emphasized that decentralization should be a shared responsibility rather than a competition.



