By sidereal time, not tropical, the Bitcoin is born in Sign of Sagittarius. I have found even a time when first block chain was produced, at 18:15:05 GMT.
So Bitcoin would be Sagittarius with Cancer Ascendant. Interesting though, Uranus which represents new technologies is in 8th house which represents money, other people’s money, banks and credits. And it is directly in opposition with Saturn, which usually represents structure, law and sitting in 2nd house of persons earned money. In other words this combo says that independence (Uranus) in field of money will challenge authority (Saturn).
Anyway, I did talk to person who works in bank, in 2012 and asked until when this financial construction will last. She was thinking a little and say during 2016 it has to start going down. Uranus indeed changed sign and went into Aries, June 27, 2016; 12:00 (noon) GMT.