Vitalik Buterin proposed a Fast Confirmation Rule on Mar 18 to make transactions effectively irreversible after one slot (~12 seconds), potentially cutting cross-L2/bridge/exchange waits by ~80-98%; expected in coming months and requires no hard fork. The change targets improved capital efficiency, liquidity and faster settlements for DeFi/DEX/CEX flows, relying on the security assumption that most validators are honest and typical network delays stay <3s; it is not equivalent to full economic finality (residual reversal risk). Crypto impact: a protocol update that should accelerate Ethereum adoption, reduce bridge/processor costs and boost on-chain activity and DeFi throughput, strengthening network utility and settlements.

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Vitalik Buterin shared a new fast confirmation rule mechanism for the Ethereum Network
The rule could significantly cut waiting times while ensuring transactions are not reversed after just 12 seconds.

Vitalik Buterin has proposed a new Fast Confirmation Rule mechanism to boost transaction speed and assurance, leading the way for a more reliable and user-friendly Ethereum network.

According to a X post of Buterin on March 18, the new proposal aims to provide users with a high level of confidence that transactions will not be reversed after just one slot, which is approximately 12 seconds.

As per the article published by Julian, a researcher at the Ethereum Foundation, currently, it can take several minutes to transfer money from Ethereum’s main network to Layer 2 solutions or exchanges. With the new rule mechanism, cash might travel across platforms considerably more quickly, which could reduce that wait by as much as 80% or 98%.

Faster Transfers and Improved Capital Efficiency

With that, platforms may be able to deploy capital more effectively and increase liquidity with faster confirmations. There may be less risk and expense associated with delays for bridges and transaction processors.

Also, Buterin added that the network works based on two main security assumptions, where the majority of validators behave honestly, as the network remains fast, with delays of less than three seconds. As this confirmation rule is not as robust as full economic finality, it still provides a reliable level of assurance for practical use cases.

It is expected to be implemented in the upcoming months. Also, the update does not call for a hard fork, meaning it could be implemented without affecting the current Ethereum network.

Ethereum’s Evolving Roadmap

Previously, Buterin discussed that Ethereum is a type of sanctuary technology that is to preserve human freedom, which is becoming more controlled. He spoke about the importance of censorship resistance, privacy, and decentralized governance. With that, the new FCR aligns with Buterin’s vision of Ethereum, where users can interact with greater confidence.

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