One of the strongest TA reversal indicators is the Head and Shoulders (H&S) pattern. I am seeing quite a few emerging with BTC. As you can see from the chart an inverse H&S formed around the bottom of the down trend which would indicate a reversal up to $12600. However, a smaller H&S pattern seems to be emerging as I write, with the possible shoulder coinciding with the longer term down trend (red line). If this is confirmed it could take BTC down to around the $9000 level before recovering to the $12600 level indicated by the larger inverse H&S pattern. However it will have to contend with the long term down trend line at around $11250 which has presented a challenge. Now here's the kicker, IF and I mean IF, BTC breaks the resistance of $11250 and $12600 we could see a huge gain back to the $18000+ level, as indicated by the largest H&S pattern on my chart.
Please keep in mind that this is all speculation on my part, I'm just applying and extrapolating some TA techniques. In proper TA we should be looking for the confirmations before trading.