Bubble Bubble

The Bitcoin Sovereign Wealth Fund

Estonia wants in on the crypto-currency bubble.
Photographer: Andrey Rudakov
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The crypto-currency boom is in full swing. The explosion in price and quantity of new digital tokens is so bonkers even its evangelists are calling the market a ticking time-bomb.

It's also tempting the establishment to get in on the act. For the Republic of Estonia, it's being touted as a way to raise a sovereign wealth fund -- an imaginative leap for a country with a population one-sixth the size of New York City's and one of the highest levels of mobile broadband penetration in the world.