Yep, I used to stay right off of Union SQ when in SF on business and it was loaded up with homeless people and those with clearly visible addiction issues. I never felt unsafe though you had to be aware. Seattle downtown was not much better.
Foxx was this you? $400MM Bitcoin purchase:
https://www.marketwatch.com/story/anonymous-trader-buys-400-million-of-bitcoin-2018-02-16?siteid=yhoof2&yptr=yahoo