The YouTube personality CryptoNick has been labeled a shill for promoting the cryptocurrency "Ponzi scheme" Bitconnect.
North Korea has a history of producing and exporting meth.
The cryptocurrency’s price fell to as low as $10,105 on Wednesday. At its peak in December last year, one bitcoin was worth almost $20,000.
“Petro,” a new cryptocurrency, will be backed by oil, diamonds and gold reserves to circumvent sanctions from the Trump administration.
South Korea's plan to ban cryptocurrency trading has rattled markets and sent bitcoin prices plummeting.
Ripple, also known as XRP, has a market value of $47 billion.
Numerai has established the highest paid data science competition in the world.
Security researchers say infected machines are "mining" for a digital currency called Monero.
The wisdom of the crowd would reveal the way people act inside certain hierarchies.
The price of bitcoin has fallen by $50 in the last 24 hours, dropping below $400 for the first time this year.