

BlockLayer Podcast
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@BlockLayerPod
Accelerating Web3, documenting the builders. Podcast with top guests on conviction, craft, and scaling. 📧 [email protected]
























Ethereum Is Getting a Censorship Shield with EIP-7805 Ethereum's upcoming Hegotá upgrade will include FOCIL, a new mechanism that mitigates transaction censorship. Here's how the EIP works 👇 ~~ Analysis by @sachishiokava ~~ EIP-7805 (FOCIL: Fork-Choice Enforced Inclusion Lists) has been scheduled for Ethereum's upcoming Hegotá upgrade. Ethereum researcher @soispoke noted: > "In today's world, it's remarkable that the Ethereum community can stand behind protocol upgrades that reinforce core cypherpunk values." The Problem FOCIL Solves Currently, Ethereum validators outsource block building to specialized entities via out-of-protocol proposer-builder separation (PBS). While economically efficient, this concentrates power among a handful of builders who can refuse transactions—whether for regulatory reasons or otherwise—effectively censoring them from the chain. FOCIL removes this veto power. How FOCIL Works For each Ethereum slot, a committee of 16 validators is pseudorandomly selected. These validators independently scan the mempool and broadcast an Inclusion List (IL) of transactions that must be included, capped at 8 kilobytes per list. The next block proposer must include all IL transactions. Attesters will only validate blocks containing these transactions. If a builder skips valid IL transactions, the block gets rejected by the fork-choice rule. This isn't a social norm—it's protocol-level enforcement. Under this paradigm, skipping IL transactions becomes a protocol violation that renders blocks non-canonical. Why FOCIL Matters Currently, hostile builders can suppress any transaction. Under FOCIL, censoring a transaction requires controlling a randomly selected group of 16 validators each slot—a practically impossible guarantee to break over time. Users currently depend on trusting builders to behave. FOCIL removes this dependency entirely while preserving builders' economic role in transaction ordering. The Synergies to Come FOCIL also combines with upcoming features like EIP-8141 (Frame Transactions). @VitalikButerin that together they enable guaranteed inclusion within 1-2 slots for smart wallets, gas-sponsored transactions, and privacy protocols through 17 randomly selected actors per slot: > "With FOCIL and 8141 together, anything, including smart wallet txs, gas sponsored txs, and even privacy protocol txs, can be included onchain through one of 17 different actors (the proposer or the includers) that are all chosen randomly in each slot. This gives us guaranteed rapid inclusion, meaning almost certainly within 1-2 slots, of any such tx, even in an adversarial environment." Zooming Out While most chains optimize for throughput, Ethereum continues investing upgrade cycles in neutrality guarantees. Implementation is currently underway for Hegotá (slated late 2026), with client teams progressing through six milestones—track progress at meetfocil.eth (dot) limo. FOCIL represents Ethereum's commitment to hardness fit to anchor its world ledger vision for decades to come.



