Bitcoin crosses $30K to reach an all-time high, after growing almost 50% in December  —  Bitcoin, the world’s largest cryptocurrency, topped $34,000, just weeks after passing another major milestone.  —  The currency gained as much as 7.8% to $34,182.75, before slipping to about $33,970 as of 3:05 p.m. on Sunday in Singapore.http://www.techmeme.com/210103/p6#a210103p6