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This chart has been posted here, on the haejin's blog, 8 days ago

With the following comment:

....A reversion to the mean down to 8,500-9,000 would be the bare minimum. A weekly close below $13282 implies continuation all the way down to the lower $4K. And that is what I put as the BTC target for 2018.
https://www.mql5.com/en/charts/8134910/btcusd-w1-simplefx-ltd