Australian crypto entrepreneur Kain Warwick has sold his four-story West Village “glass box” penthouse at 601 Washington — with a plunge pool and a rooftop hot tub — for $29 million, according to property records. Warwick is taking a hit on the splashy spread, which he bought as a pied-à-terre for $30.65 million in 2021. The residence was asking $36.5 million last December. Warwick is the founder of Synthetix — a crypto-based derivatives platform — and Infinex, a crypto company. In 2021 — the same year that Warwick bought this penthouse — two of his three brothers, Kieran and Aaron Warwick, briefly became ... (full story)