Twenty Percent and a Few Days: Optimising a Bitcoin Majority Attack

Ansgar Fehnker, Kaylash Chaudhary

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    7 Citations (Scopus)
    1 Downloads (Pure)


    Bitcoin is a distributed online payment system that organises transactions into blocks. The size of blocks is limited to 1 megabyte, which also limits the number of transactions per second that can be confirmed. This year several attempts have been made to create a fork or a split that removes this restriction. One such alternative is Bitcoin Unlimited (BTU). Proponents of BTU have suggested to use a type of majority attack to force other Bitcoin miners to adopt BTU.
    Original languageEnglish
    Title of host publicationNASA Formal Methods
    Subtitle of host publication10th International Symposium, NFM 2018 Newport News, VA, USA, April 17-19, 2018 Proceedings
    EditorsAaron Dutle, César Muñoz, Anthony Narkawicz
    Place of PublicationCham
    Number of pages7
    ISBN (Electronic)978-3-319-77935-5
    ISBN (Print)978-3-319-77934-8
    Publication statusPublished - 2018
    Event10th International Symposium on NASA Formal Methods 2018 - Newport News Marriott at City Center, Newport News, United States
    Duration: 17 Apr 201819 Apr 2018
    Conference number: 10

    Publication series

    NameLecture Notes in Computer Science
    ISSN (Print)0302-9743


    Conference10th International Symposium on NASA Formal Methods 2018
    Abbreviated titleNFM 2018
    CountryUnited States
    CityNewport News
    Internet address

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