Traders,
I know there's a first for everything but, as traders, we usually do our best work NOT guessing when that first will be. In this case, I have traced that descending purple TL back to sometime around November of 2016, which is near the inception of dominance on this particular chart. In its history, BTC.D has NEVER broken above our trend line with confirmation on the daily. You can observe a few wick-ups but no body closes, let alone confirmation. Until we get a close above that TL with confirmation, I believe it's safe to conclude that we may see Bitcoin struggle a bit here vs. the Alts. Bitcoin needs to close above this trend line or larger cap alts, like Ethereum, will continue to outperform.
Stew