The world's largest cryptocurrency, Bitcoin, has dropped to its lowest level in more than a year.
In South Korea, one of the leading nations for crypto investing, young adults seeking financial freedom are falling into the craze with volatile results.
Unicef has started recruiting gamers to mine Ethereum — the second-most valuable cryptocurrency after Bitcoin — to raise money for Syrian children.
The move comes over fears a plunge in the value of crypto currencies will leave customers unable to repay their debts.
Blockchain technology is already used by digital currencies such as bitcoin.
The decision could pile pressure onto the competition.
Adverts that promote cryptocurrencies, including Bitcoin and ICOs, will be banned on all Facebook platforms including the Audience Network and Instagram.
Government angry at €430 million of cryptocurrency exchange.
The value of Bitcoin soared by 1,700 per cent at the end of last year. But are global, cryptocurrencies regulatable, and do they help criminals transact their business? Davos tackles this difficult subject.
Other cryptocurrencies plunged as well after reports South Korea and China could ban cryptocurrency trading.
Investors can now bet on the rise or fall of the cryptocurrency using bitcoin futures, which have started trading on a major regulated exchange.
Venezuela is creating a bitcoin rival, the "Petro", to get around the handicaps of what President Maduro calls America's "financial blockade" of the country.