211 reputation
16
bio website cs.mcgill.ca/~akazna
location Montreal, Canada
age 24
visits member for 2 years, 7 months
seen Apr 13 at 5:00

From the School of Computer Science and Department of Psychology at McGill University, I marvel at the world through algorithmic lenses. My specific interests are in quantum computing, evolutionary game theory, modern evolutionary synthesis, and theoretical cognitive science. Previously I was at the Institute for Quantum Computing and Department of Combinatorics & Optimization at the University of Waterloo and a visitor to the Centre for Quantum Technologies at the National University of Singapore.


Sep
28
awarded  Yearling
Apr
15
awarded  Popular Question
Mar
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awarded  Announcer
Dec
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awarded  Nice Question
Aug
31
comment Could one prevent double spending in decentralized digital currencies (like Bitcoin) without all transactions being public?
@ripper234 no, it shouldn't. This is already the second place I asked the question (it was asked at cstheory originally) and it was decided in a meta discussion there that I should repost. Usually questions are only migrated if they are off-topic on the original site; this question seems to be ontopic here, and already generated a very good answer.
Aug
30
comment Could one prevent double spending in decentralized digital currencies (like Bitcoin) without all transactions being public?
@David this is a good answer; but it feels like two in one. In particular you give some arguments for what can't be achieved, and then you give a second answer which shows an improvement on bitcoin's scheme. I would like to accept the second answer, but I don't find the first one rigorous enough. If you could make the second part of your answer and maybe even elaborate on "I've discovered a truly marvelous solution to this problem, but this answer is already too long." as a separate answer, that would be awesome!
Aug
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awarded  Supporter
Aug
25
comment Could one prevent double spending in decentralized digital currencies (like Bitcoin) without all transactions being public?
can you give an explanation of an implementation that does not keep track of the accounts the coins passed through? Since that would answer my question very nicely.
Aug
25
comment Could one prevent double spending in decentralized digital currencies (like Bitcoin) without all transactions being public?
@PaĆ­lo thank you!
Aug
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awarded  Student
Aug
25
awarded  Autobiographer
Aug
25
asked Could one prevent double spending in decentralized digital currencies (like Bitcoin) without all transactions being public?