user14928: I have a one year research project in my MSc curriculum. So i was suppose to address a existing issue in bitcoin protocol. Highly appreciate if someone can advise me and give me some ideas.
Thank you.

user8717: Selfish mining is probably one of the most addressed issues that was theorized by a group at Cornell university. I find this interesting, because rather than being a technical issue such as transaction malleability, it is more of a conceptual issue with how Bitcoin and its consensus system works.
That should get you started and give you some food for thought.

14928: <p>I have a one year research project in my MSc curriculum. So i was suppose to address a existing issue in bitcoin protocol. Highly appreciate if someone can advise me and give me some ideas.</p>

<p>Thank you.</p>
 8717: <p><a href="http://hackingdistributed.com/2013/11/04/bitcoin-is-broken/" rel="nofollow">Selfish mining</a> is probably one of the most addressed issues that was theorized by a group at Cornell university. I find this interesting, because rather than being a technical issue such as <a href="https://en.bitcoin.it/wiki/Transaction_Malleability" rel="nofollow">transaction malleability</a>, it is more of a conceptual issue with how Bitcoin and its consensus system works.</p>

<p>That should get you started and give you some food for thought.</p>
