See the chart, the chart tell more then words.
Bitcoin has currently smashed the 21days ema on 3days chart, this has been acting as resistance tru the bear market and if we now can find support there now on the bigger timeframes we might take that as a confirm that the reversal is in, lets see how the chart plays out the next few weeks.
The 21days EMA on 3days was acting as support in the last bullmarket from 2015 - 2018