There are several signs to "confirm" with high probability a trend reversal. The most important signs beside price action are: rounded bottom formation, wedge breakout and volume momentum.
There should be a slight pull-back before going up, therefore I would wait for a lower entry point (37,000 right now)
Once the first target hits, please lock in profits. Like always, please use your own judgment when trading, this is nothing but a trading IDEA, not advice.