Everything but the blue line is pretty bullish (except for a bit of swinging around). Everything that comes after this channel requires a level of predictive power I personally can't find motivation for right now.
Your pink line, crashes right through the trend line which was tested last week around $440, met at the $340 bottom, met again in the Oct Silk Road Crash, and trended along in Jan 2013.
If your pink line comes to pass, I would need to look at only shorting Bitcoin as a long term uptrend would be confirmed as finished, which would of course mean that we would be in a downtrend.
Not by my analysis. I have argued strenuously in here that I see strong evidence of (natural) buying support in the mid 400s. You're free to reject that conclusion obviously, but by my interpretation, pink line would just be 'ever so weakly upwards leaning consolidation'.
Basically, broken trendline doesn't mean much to me if there's a stronger factor in the back of my mind. Short term, it would be bearish, sure: we'd go below the 23% fib 1200-340, which means you'll hear the bulls cry again. Could be however that breaking through it without closing under it is the confirmation we need that we're out of the larger downtrend for good.
EDIT: and that particular trendline, the one that goes through the SR crash, is not a favorite of mine anyway. SR is a borderline outlier, so I weigh it less to begin with, it's far far in the past, with zero point between then and now even getting close to it, and it's angle is way too steep to really be a realistic line of support. the trendline that formed the triangle I looked at (until we broke out 9 days ago) was simply the slightly rising support through ~400.
Oda, do you think your violet scenario - retrace to ~540 - is occurring right now?