Cryptology ePrint Archive: BibTeX Citation of Report 2015/469

@misc{cryptoeprint:2015:469,
    author = {Andrew Miller and Rob Jansen},
    title = {Shadow-Bitcoin: Scalable Simulation via Direct Execution of Multi-threaded Applications},
    howpublished = {Cryptology ePrint Archive, Report 2015/469},
    year = {2015},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.