Vitalik Buterin Backs Ethereum Upgrade to Strengthen Censorship Resistance
Vitalik Buterin has thrown his support behind a proposed Ethereum upgrade known as Fork-Choice Enforced Inclusion Lists (FOCIL), describing it as a key step in reinforcing the network’s original cypherpunk values.
The proposal is expected to headline Ethereum’s Hegota hard fork in 2026. Its core goal is simple but powerful: prevent transaction censorship by ensuring validators cannot selectively exclude valid transactions from blocks.
If implemented, FOCIL would require validators to include all legitimate transactions, even if they face regulatory pressure or external sanctions. In other words, it aims to hard-code neutrality into Ethereum’s base layer.
The mechanism is being developed alongside EIP-8141, which would elevate smart accounts and privacy-focused tools to “first-class citizens” within the protocol. Developers are currently targeting a mainnet rollout in the second half of 2026 as part of the Hegota upgrade.
Why FOCIL Matters for Ethereum’s Neutrality
The proposal (EIP-7805) was confirmed for Hegota during a February 19 All Core Devs call initiated by researcher Alex Stokes.
At its heart, FOCIL addresses a growing concern: block production has become increasingly concentrated among sophisticated operators who may filter transactions to comply with local regulations.
That risk became clear after U.S. sanctions were imposed on Tornado Cash. At one point, compliant validators were reportedly censoring up to 90% of blocks containing related transactions.
While infrastructure providers like Consensys have navigated these legal gray areas voluntarily, critics argue that Ethereum’s protocol itself remained exposed to potential censorship.
FOCIL changes that dynamic. Under the proposal, any block that ignores valid inclusion lists would be rejected — effectively orphaned — by the network. That means validators wouldn’t be able to exclude transactions without risking their block being discarded.
The objective is to ensure Ethereum’s base layer remains neutral, regardless of where a validator operates or what regulatory environment they face.
How the Mechanism Works
In a recent post on X, Buterin explained that FOCIL would enable “censorship-resistant rapid inclusion” by assigning 17 randomly selected actors per slot to help curate transaction lists.
If a proposed block fails to include valid transactions from those lists, the chain would automatically fork away from it. This makes censorship not just discouraged — but technically unviable.
Buterin also highlighted how FOCIL works in tandem with EIP-8141. Together, they would guarantee that smart wallet transactions, gas-sponsored transfers, key updates, and privacy-related interactions receive the same inclusion assurances as standard ETH transfers.
For many observers, this strengthens Ethereum’s commitment to being neutral, decentralized infrastructure — resistant to capture or political pressure.
Importantly, the design also ensures that any transaction broadcast to the public mempool is included within a bounded timeframe, improving predictability for users.
What Does This Mean for Ethereum Markets?
The reaction among developers has been mixed. Some, including Layer 2 builder Tim Clancy, see FOCIL as essential for preserving neutral blockspace. Others worry about potential friction with U.S. regulators if validators are forced to process sanctioned transactions.
For now, markets appear calm. Ether has held relatively steady, with traders focused on the long-term timeline rather than immediate impact.
Before Hegota arrives in 2026, Ethereum must first implement the Glamsterdam hard fork, which centers on Enshrined Proposer-Builder Separation (EPBS) — another major structural upgrade.
As investors weigh Ethereum’s future, censorship resistance is increasingly viewed not just as an ideological principle, but as a core value proposition. If successfully implemented, FOCIL could reinforce Ethereum’s position as politically neutral, globally accessible infrastructure — something that may matter more and more in a fragmented regulatory world.
