Bitcoin breached two ascending support lines and barely managed to keep above a descending support line, after actually breaching it (it's passing at about 4500 usds).
It's on free falling and the probability to reach about 2000 usds on the next months increased a lot. There is an ascending support line on the weekly charter passing 754-890 and currently on 1888 that should offer a support.
If this line can't hold long term, the next one is passing below 1000, now at about 650!
A long term buy at about 2000 might be a good move, but not with all your capital, because if it stands, the price will be around this value for months, before slowly going up.
But a flash crash below this line for a quick drop to the next support line now at 650 can't be ruled out.
At least, this is the story that past major crashes tell us.
But don't trust me. This isn't a recommendation. Do your homework.