According to data from MEV Watch, the number of Ethereum blocks produced by OFAC compliant MEV-Boost relays fell below the 50% threshold yesterday. On February 13, only 47% of blocks were produced by such relays; today that number stands at 49%. 

Nevertheless, in the two months following Ethereum’s transition from Proof-of-Work to Proof-of-Stake, the number of blocks being built by so-called “OFAC compliant” MEV-Boost relays rocketed from 9% to 79%, prompting censorship concerns from within the community.