One of the largest producers of censorship-resistant blocks on Ethereum has made a complete u-turn, announcing it will start censoring OFAC-sanctioned blocks across all of its MEV relays in compliance with local laws.

The firm, bloXroute Labs — which has produced at least 400,000 Ethereum blocks from its two leading Maximal Extraction Value (MEV) relays — made the announcement of its policy change on Dec. 18 in a post on X (formerly Twitter), noting: 

“Effective immediately, all bloXroute relays will reject block bids if they contain OFAC transactions.”

An “OFAC transaction,” as described by bloXroute Labs, is any that interacts with a wallet that has been sanctioned by the United…

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