Asked about Kostarev's meeting with Rosfin, Binance said, "We did not work with, collaborate, nor partner with that organization." Five months later, Rosfin sent Binance a questionnaire, reviewed by Reuters, seeking more information on the exchange's background checks on clients and its "preferred channel of communication" with authorities for requests on crypto transactions. Asked about this communication, the firm said, "Binance takes its compliance obligations seriously and welcomes opportunities to consult with regulators."