This can be wishful thinking, but it does seem like, that as of today (28.01.2019) Bitcoin broke the diamond formation and can strive lower. This means that it will be possible to short it after the breakout is confirmed.
Nevertheless, this market is manipulated and there can be short squeezes, which, in my opinion, can happen sooner rather than later (a pullback after a drop of that magnitude is normal). Touch of the (now resistance) could give an potential entry
Best of luck.