

Vitalik Buterin outlines comprehensive security and efficiency improvement suggestions for Ethereum L2S
Apr 20, 2025 pm 08:06 PMVitalik Buterin proposes to improve the security and efficiency of Ethereum L2, and focuses on three major directions: expanding data space (BLOB), hybrid short-term proof systems to achieve rapid termination, and creating a standardized proof aggregation layer.
In a recent blog post by Ethereum co-founder Vitalik Buterin, proposed solutions to improve the security and efficiency of Ethereum L2. The solution mainly revolves around three directions: increasing data storage space (BLOB), adopting a hybrid short-term proof system to speed up the ending, and establishing a standardized proof aggregation layer.
The need to improve the L2 data space has been mentioned several times, which is the key to efficiently expanding L2. Buterin pointed out that assuming each L2 transaction takes about 100 bytes and 1,000 transactions are processed per second, 100K BLOBs can be filled in about 33 minutes. For high load L2, approximately 2.8 million transactions can be processed per day.
Buterin recommends a hybrid short-term proof system, which he calls “2-3” and believes that this is the best option. The system combines Proof of Optimism (OP), Proof of Zero Knowledge (ZK) and Trusted Execution Environment (TEE) technologies without additional work.
Furthermore, Buterin emphasizes the importance of establishing standard mechanisms to aggregate multiple proofs into a single proof. This is critical for situations where multiple L2s need to coordinate processing a single transaction, or if many small L2s need to be bundled into large proofs.
"The easiest and most modular way is probably to build a 'standard minimal proof aggregation layer'. This layer will receive proofs from different chains in a standard format and integrate them into a single proof," Buterin wrote.
Buterin acknowledged that implementing the scheme would require some technical challenges to overcome, but he believes the benefits will far outweigh the costs. He hopes that this proposal will guide discussions on the direction of improvement of Ethereum L2.
"We can create an efficient and secure system that meets the growing demand for decentralized applications," Buterin wrote. "I believe this is the best way to ensure long-term success of Ethereum."
At a time when Ethereum is facing competition from other blockchains such as Solana, Buterin's proposal is of great significance. These competitors are also actively developing expansion plans. In order to maintain its leading position in the DeFi field, Ethereum must improve efficiency while ensuring the highest security. This proposal may be an ideal solution, let's wait and see.
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