Mt. Gox Shows Bitcoin’s Growing Pains — Update

Just six months ago, Mark Karpelès was sitting on top of the world. Mt. Gox, his Tokyo-based platform that had started as an exchange for Magic trading cards, had in a short time become the world’s dominant platform for exchanging the new big thing–bitcoins.

Cut to a snowy February morning in Tokyo, and you find Mr. Karpelès trying to walk past a bitcoin trader holding a sign outside Mt. Gox’s offices in the hip Shibuya neighborhood, asking: “MT. GOX–WHERE IS OUR MONEY?”…