The venture is strictly voluntary, and the lower limit will be 10,000 yen, around $88. The company is also offering a 10 percent bonus for employees willing to try it, which might help make up for some of the crypto-currency's extreme volatility.

GMO plans its own initial coin offering (ICO), with a strange twist. The company's "GMO coin" will be a token that buyers can use toward buying not only Bitcoins, but next-gen mining boards or part of a cloud mining business. The company plans to develop "cutting-edge 7-nanometer process technology" that will allow high performance mining with lower power consumption than current chips.

Bitcoin is functioning less as a currency and more as an investment nowadays, as we wrote recently, having dramatically soared in value from around $800 to as high as $19,000 in a year. Employees willing to take them as pay would probably therefore sock them away rather than using the currency to buy snacks. It'll be an interesting experiment, in any event, especially in a country that has taken a forward-looking approach to the currency, and hosted one of its biggest failures.