51% of Ethereum blocks are now compliant with OFAC standards, raising censorship concernsOFAC stands for the Office of Foreign Assets Control, the entity in charge of enforcing United States economic sanctions, while MEV-Boost relays are centralized entities that act as trusted mediators between block producers and block builders. In this way, all Ethereum proof-of-stake (PoS) validators can outsource their block production to other builders.
This metric tracks how many blocks were built by OFAC-compliant MEV-Boost relays since the Merge. Due to Ethereum's upgrade to a PoS consensus, MEV-Boost has been enabled to a more representative distribution of block proposers, rather than a small group of miners under proof-of-work (PoW).
According to what Lachan Feeney, Labrys' CEO noted that in hard censorship, that no matter how much you paid or how long you wait, that sanctioned transactions would never get included into a block. That nodes would be forced by regulation to discard those blocks that contains sanctioned transactions. Also that in case of soft censorship, when sanctioned transactions would eventually be validated, that it would likely result in long waits and high-priority fees, making the user experience substandard.
According to Labrys' page, there are currently seven major MEV-oost relays including Flashbots, BloXroute Max Profit, BloXroute Ethical, BloXroute Regulated, BlockNative, Manifold and Eden. "Of the 7 available major relays, only 3 do not censor according to OFAC compliance requirements. OFAC compliant relays will not include any transactions that interact with the Tornado Cash smart contract or other sanctioned wallet addresses as designated by OFAC," stated the company.
