Luca Zanolini, an Ethereum researcher, has explained the reason why Ethereum separates its continuous block production and final settlement. He argues that with this structure, Ethereum can continue to operate despite software failures, downtimes and falling validation participation.
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- Ethereum separates block production from finality to allow transactions to continue in the event of network failures or validator problems.
- Inactivity penalties are applied automatically to reduce stakes until validators active regain sufficient weight for finality.
- Ethereum researchers seek to achieve faster settlements by increasing client diversity.
He relates the ten-year block production history of Ethereum to current efforts on faster finality, a cleaner consensus model and faster completion.
Ethereum, on the other hand, uses two different processes: one to continue adding new blocks and another for marking older blocks as “final”. The production layer tracks the chains supported by validators active while the finality level requires the approval of at least two thirds of all active stakes. Finality may pause if that threshold is no longer met, but new blocks will continue to be created.
This distinction was evident in May 2023 when two client errors disrupted the finality of the project within a 24-hour period. First, the interruption lasted approximately 25 minutes. The second, almost an hour. As blocks continued to arrive and transactions were available, the network recovered with no coordinated restart.
Why Ethereum is able to avoid a network shutdown
Zanolini said A base-layer stop would affect more than just token transfers. The lending platforms would be unable to process any liquidations. Oracles and rollups couldn’t update the prices. Users would not be able to respond on the chain, and risks will continue to grow.
The recovery of the network would be in the hands a group of operators, developers and validators. The group would have to identify the problem, decide on the fix, and then coordinate the return of the network. Ethereum aims instead to produce blocks when a honest majority can communicate.
Restorative action for Slashing and inactivity
By signing validator signatures, the finality layer safeguards a settled history. Protocol can verify evidence from conflicting blocks or attestations. “The protocol only punishes what it can prove,” Zanolini wrote. Validators can have their stakes lowered if they sign conflicting histories.
Ethereum uses a leakage of inactivity when the finality is unavailable for longer than four epochs. Offline validators slowly lose stake as penalties rise during an extended disruption. It changes the balance of voting until all validators are able to control sufficient stakes for the chain to be finalized automatically.
This process doesn’t require manual restarts or hard forks. While inactive stakes fall, block production continues. Zanolini called this recovery path a fundamental part of Ethereum’s architecture because it can be returned to finality even without waiting until every validator is online.
Limiting Software Failures by Client Diversity
Ethereum’s consensus model is more vulnerable when one client has too many stakes. One client with a stake above a third can be threatening to finality in the event of a serious fault. A control above half can cause fork selection to be distorted, whereas a client over two thirds can help close a history that is invalid before the operators react.
As before reported According to crypto.news, the Fusaka upgrade of December 2025 caused a Prysm error that pushed validater participation up to 75%. Validators were rewarded with 382 ETH for missing 41 epochs, while the network was unable to complete them. Other clients kept working so Ethereum did not lose finality.
Ethereum’s Protocol Consensus Team is currently studying how to clearly separate block production from finality. In a March research proposal, it was suggested that a sampling committee could be used to produce faster blocks and a different process would finalize the chain. Both systems could then use different security and timing settings.
According to a May 11, update, Ethereum will be focusing on the reduction of finality times. This takes place currently at around two epochs. Reporting by crypto.news said Vitalik Buterin backed Minimmit – a one-round system for finality. It could help settle blocks quicker, but its current design allows for a smaller formal fault tolerance.
Zanolini explains Ethereum’s robustness as a collection of interconnected choices, rather than a single feature. In Zanolini’s explanation, Ethereum resilience is a set of linked choices rather than a single feature.
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Source: crypto.news
