Two founders of the world's two largest crypto exchanges are airing grievances on X. Binance founder CZ issued his ultimatum to OKX CEO Star Xu on April 9, 2026: accept a billion-dollar bet to settle disputed claims about his personal life, his marriage status, or be publicly branded a liar. Star Xu rejected it within minutes, firing back on regulatory grounds and pivoting to a harder question about whether CZ's Binance stake has been legally separated from his ex-wife. I typically ignore all these false claims attacks.