Bitcoin and the others made a lower week close for 2018. That isn't a bullish sign. But, the day closing has closed higher than yesterday. Meaning some sort of weak bounce isn't out of the question. With odds it may drop again before the week ends to test the lows. Meanwhile the quarter, month, and week closed lower. This is why 6881.83 should be important.
I lowered a blue line to show. I will change the color of the upper one/6881.83.
The term "Weak bounce" is relative, It can go well above yesterday's highs. Pick a close, for it to return under 6881.83. Quarter, month or week. I am using the smaller week because it pulled it back below, after being above 6881.83. Things can change. I still lean to a further drop.
The 12 hour closed higher and above 6882. 6882/6830 ish may act like short term support. Like last post states, before Saturday pa may be back below 6830 or 6882. Atm it has a higher day close, followed by a higher 12 hour close.