Looking from April of 2017, I took the low point and connected to angle to the July low point. This placed a direction that later showed reaction from Bitcoin in Sept/Oct 2018 creating a potential trend line that could impact future price levels. Those levels have come back into play here in May of this year.
Too early to confirm just yet; nevertheless, initial reaction did indeed treat it as a resistance level. Too trust this more though, I'd like to see the RSI break below trend as marked.