Hong Kong-based online watch trading platform Wristcheck confirmed that American rapper and entrepreneur Jay-Z (Shawn Carter) participated in its latest $5 million funding round, without disclosing his investment value or equity stake. Founded three years ago by Austen Chu and Sean Wong, Wristcheck has raised a total of $13.6 million, with investors including Alibaba Entrepreneurs Fund, Gobi Partners GBA, and K3 Ventures. Wristcheck ensures transaction security and transparency, allowing buyers and sellers to see actual offers and fees. Each watch is authenticated and graded, with sales commissions ranging from 6% to 12% based on price and quantity.