BTC China, Huobi and OKCoin shut as authorities mull over "comprehensive" crackdown.
The exchange said it was acting "in the spirit of" a central bank ban last week on initial coin offerings.
Cybersecurity pioneer believes bitcoin will spike to a value of $500,000 by 2020
Monero and ZCash are the two most popular virtual currencies as the 'anonymity of transactions' is attractive to hackers.
Dimon's tirade against bitcoin comes as JPMorgan invests in blockchain tech.
Baroness Michelle Mone OBE and businessman Doug Barrowman unveil luxury apartment complex to be bought with Bitcoin
Lykke partners with CryptoTax to provide customers with country-specific tax reports.
MGT has reportedly mined 1,000 bitcoins since September 2016.
Once-anonymous cryptocurrency users can be identified by web cookie data, researchers warn.
Enigma's slack channel and certain email lists have also been hacked.
Global online trader says move down to rising "popularity of cryptocurrencies."
Blockstream Satellite offers a low-cost way for anyone, anywhere to operate and maintain Bitcoin nodes.
Cybersecurity expert sheds light on the new currency paradigm.
Cryptocurrency saw record inflows from safe-haven seekers taking it to fresh record highs.
Russian entrepreneur invests $500,000 into bitcoin-like digital currency.