Even the most ardent bitcoin maximalist would agree it’s been a difficult 12 months for the world’s best-known digital currency. After trading near $20,000 in late 2017, the best-known cryptocurrency tumbled as much as 80%, demolishing portfolios and ending dreams of early retirements.

But on Tuesday, bitcoin

BTCUSD, +14.71%

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Source: http://www.marketwatch.com/news/story.asp?guid=%7B4F93EF4E-5544-11E9-9DA4-4799A016044F%7D&siteid=rss&rss=1