Vitalik: FOCIL Collaborates with EIP-8141 to Achieve Censorship Resistance for Rapid On-chain Settlement

BlockBeats News, February 20th, Ethereum founder Vitalik stated that there is a significant synergistic effect between the FOCIL mechanism and Ethereum's account abstraction proposal EIP-8141 (based on 7701). EIP-8141 elevates smart accounts (including multisig, anti-quantum signatures, key rotation, Gas sponsorship, etc.) to a "first-class citizen," meaning that operations from such accounts can be directly included as on-chain transactions without additional encapsulation. Simultaneously, privacy protocols can also achieve multi-tenancy account models through a paymaster or 2D nonce mechanism, thus obtaining an equivalent level of native support. FOCIL provides an anti-censorship rapid transaction inclusion mechanism. Under the combination of both, various transactions including smart wallet transactions, Gas-sponsored transactions, and privacy protocol transactions can be included in blocks by one of the 17 randomly selected roles (proposers or includers) per slot.

Vitalik added that this design ensures that transactions are almost inevitably finalized on-chain within 1–2 slots in an adversarial environment. In the current version, each FOCIL entity is approximately 8kB in size, relatively small in scale, but there is a future expansion path that can support the majority of block transactions entering through FOCIL channels. This architecture is similar in features to the Multi-Collateral Proposers (MCP) design, but the difference is that FOCIL does not control the "last look" related to MEV, which is still allocated through the ePBS auction mechanism. Even if 100% of block slots are monopolized by adversaries through a proposer-builder separation (PBS) mechanism, refusing to connect to the public mempool or discriminate against specific applications, FOCIL can still ensure that all transactions are rapidly included. This design, while not eliminating the centralization risk of proposer roles, significantly diminishes their power. Under the EIP-8141 framework, transactions from smart wallets or privacy protocols can be directly received by FOCIL includers through the public mempool, without the need for additional intermediaries or encapsulation processes. Ethereum is accelerating its core architecture upgrade.