In one of the internet's stranger fringes, a unicorn with human breasts, a cheetah smoking a cigarette, and an animated Elon Musk in a traditional cloak sit cheek-by-jowl—the cast of a bad trip. A Word Art banner tops the page, a floating anachronism. Icons glitter, shimmy, bounce, and in other ways evade the chasing eye. Barely legible messages flick up in green, red and yellow, then vanish.Yet beneath this belch of Internet weirdness and low-fi web design lies one of the fastest-growing crypto...