Bitcoin is taking a dive after strong interest over the summer. Support at 4078 (23/08/22017 low) has been broken. Technical picture remains nonetheless bullish as long as key support hold. Strong support lies at 3599 (22/08/2017 low). Key resistance can be located at 4921 (01/09/2017 high).
In the long-term, the digital currency has had an exponential growth. There are decent likelihood that the asset will reach $10'000.