Comparing chart 12 June 2017 - 15 June 2017 exact time we'll see it's pretty same what's happening there. I think BTC starts rapidly falling 17 August 2017 and falls until 2018 August, Start point may be around 4150-4170, It could make a little brake at 3600 - 3700 and then falling to 3000 - 3100.
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and falls untill 18 August*
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Seems like BTC is gathering to take off with targeting new ATH. Every time if it shows us it's dropping really low, it actually doesn't, it gets stronger every time. It's like BTC is learning from his mistakes and fixing itself.