@misc{cryptoeprint:2018:1184,
    author = {Nasser Alsalami and Bingsheng Zhang},
    title = {Uncontrolled Randomness in Blockchains: Covert Bulletin Board for Illicit Activities},
    howpublished = {Cryptology ePrint Archive, Report 2018/1184},
    year = {2018},
    url = {https://eprint.iacr.org/2018/1184},
}