Inside Hong Kong's biggest Bitcoin mine

No one knows what will become of Bitcoin. It is mostly unregulated, but that could change. Governments are concerned about lost tax revenues and their lack of control over the currency.

The future of mining operations is equally uncertain. There are a fixed number of bitcoins available -- and more than half have already been extracted. Lau compared the explosion of professional mining operations to an arms race.

For now, it appears to be a profitable endeavor. Lau said that Allied Control is currently exploring other mining platforms, including a mine built in a shipping container -- something that could prove useful if regulators crack down on the currency.