Another quote from the Revolver article:

… BitcoinTransfer is also at the heart of a network providing money to terror groups. In August 2020, the US Department of Justice revealed BitcoinTransfer had acted as a central hub in six terror-funding operations and called for the forfeiture of 155 cryptocurrency addresses linked to the exchange. Other research has also pointed to BitcoinTransfer’s jihadist connections.

BitcoinTransfer itself has processed 36 bitcoin – just over $2 million based on current prices – in 679 transfers since December 2018, according to Chainalysis, a blockchain analytics firm that assisted the US indictment reported last year. Maddie Kennedy, a spokesperson for Chainalysis, says the company has not detected any further funds being sent to addresses associated with BitcoinTransfer since the August indictment. But, in the same period, BitcoinTransfer has ramped up its operations and opened new branches in Idlib while also moving from bitcoin to a stablecoin called USD-Tether. Tether is a cryptocurrency pegged to the price of the US dollar and has the highest volume of any cryptocurrency in circulation.