The last two hours found BTC rising roughly $1,000 USD in value. Alt coins lost considerable percentages during this quick BTC rise for no apparent reason while the general market cap stayed fairly consistent. I am not aware of any news that caused this change. Perhaps some buying pressure from Korea? It is suspicious to me just how perfectly the changes counteracted each other without a significant market cap loss or gain, which does not support the extra buying pressure theory (the market cap would have increased and alts would have stayed the same).
EDIT: The shift may have something to do with the fact that Binance has temporarily disabled new user accounts.
The most peculiar observation, in my opinion, was Bitcoin Cash's lack of price change (USD). It's BTC value reduced while it's USD value remained almost the same. I just can't help but think Bitcoin Cash is rigged (two brief pumps to nearly 0.2 BTC this week) and that Coinbase must keep it at a consistent price.
Wish I had more Bitcoin available on exchanges during this downturn since the alts seem to be recovering as I write this blog. It would have been a great time to buy, but it is frightening to keep BTC on exchanges. It seems Ethereum, BTC, and exchanges have all had their problems recently as the market cap continues to increase.