Concerns grow that Bitcoin's price is being propped up by Bitfinex, the widely-used and shadowy exchange subpoenaed in December by the US CFTC (Nathaniel Popper/New York Times)

Nathaniel Popper / New York Times:
Concerns grow that Bitcoin's price is being propped up by Bitfinex, the widely-used and shadowy exchange subpoenaed in December by the US CFTC  —  A growing number of virtual currency investors are worried that the prices of Bitcoin and other digital tokens have been artificially propped …

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