With help of some sponsors and friends, and from donations received in UCL seminar donation account,
I have created a fund for research prizes for beginning researchers in bitcoin and blockchain security, financial cryptography and real-life cryptanalysis.
Here is our press release (updated 10 March 2015).
Confirmed sponsors are Blockchain.com, Clearmatics, Complymatic, Finyear, Tramonex, and a number of individual UCL bitcoin seminar supporters.