I hope I'm not too late for the Qbit logo competition. I am not a grafix desiner (I'm a coder, web-developer and I'm working on a new Qbit website here), but I would like to suggest this as a CONCEPT. If other grafix designers want to make it better, or make better variations please go ahead.
My rationalle behind this logo:- It must be SIMPLE
- It must be UNIQUE
- It must be INSTANTLY RECOGNISABLE
- It must be so simple that you or anyone should be able to write it with a simple handwriting, like £ or $ or BTC or @ signs.
- It's in the same style as the "@" symbol, which suggests that this currency is related to the Internet age. Qbit is The internet money.
- Colour is RED, because of Feng-Shui ... Red attracts Money. So I would like this coin to have that kind of blessing and good luck from the start.

Take a pen and a piece of paper and try to write it down with a single continuous movement. Look how easy and unique it is.
Do you Like it? Gdt52QoTgrg45ktvb98SSH22sfqVLG1yCV
I can feel, it's a winner.