Ciaran Murray is dressed like any other start-up founder in their early forties: jeans, smartwatch, jumper.  Sitting on a couch in Dogpatch Labs, a trendy tech hub overlooking the River Liffey in Dublin, he blends into the background.  But appearances can be deceptive. And with Ciaran Murray, they certainly are. Over the years, I had heard the stories, the legends. Some were corroborated, others not. But the threads of the whispers were consistent: how he had made a fortune in crypto in his twenties, and how he travelled the world, gliding from villa to villa, trading in digital coins.  It’s…