Bitcoin climbed back above $18,000 last week to flirt with record levels, a spectacular rally driven by a new group of buyers seeking the opportunity for big profits.
The digital currency traded as high as $18,965 on Friday, according to CoinDesk, about 4% below its all-time high of $19,783 set in December 2017. It has surged more than 50% in the past month alone.
The…