Developer: F2Pool is suspected of deliberately filtering transactions involving OFAC sanctioned addresses

According to Bitcoin developer @0xB10C, F2Pool may have deliberately filtered four transactions involving OFAC (US Treasury Department's Office of Foreign Assets Control) sanctioned addresses in the past few weeks, based on its Bitcoin mining pool transaction review and monitoring service miningpool-observer. The author pointed out that there are many reasons why transactions are not included in blocks, such as differences in the speed of transaction propagation in the network, each node having its own set of valid transactions, and mining pools may prioritize transactions for different reasons, including receiving special payments. However, for these four transactions that were not included in F2Pool's block, the author analyzed the fee distribution of missing transactions and included alternative transactions (such as the former providing more miner fees), combined with the block space situation (enough space to accommodate but not actually included), and concluded that this was a deliberate filtering situation.