Binance CEO Changpeng Zhao played it cool in the hours leading up to the hearing in the District Court for the District of Columbia on Sept. 18, posting a picture of branded merchandise with a cheery message about the company’s interns.

He is likely to pay close attention to the court proceedings, however, as the disagreement between the United States Securities and Exchange Commission (SEC) and Binance.US is at a high pitch after a week of adversarial filings.