Bitcoin edged higher during the day but was trading below the key level of its recent breakout of $100,000 as the cryptocurrency appeared to struggle to sustain its upward momentum. On Thursday, it reached an all-time high of $103,000 after US President-elect Donald Trump nominated pro-cryptocurrency Paul Atkins to head the Securities and Exchange Commission. "Yesterday, Bitcoin briefly breached the $100,000 mark again, but plunged as the stock market sold off shortly after the opening of the US stock market," Trade Nation analyst David Morrison said in a note.