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The Blocksize War Jonathan Bier

The battle for control over Bitcoin's protocol rules

June 20, 2023 - 250 words - 2 mins Found a typo? Edit me
financial bitcoin

This book covers Bitcoin’s blocksize war, which was waged from August 2015 to November 2017. On the surface the battle was about the amount of data allowed in each Bitcoin block, however it exposed much deeper issues, such as who controls Bitcoin’s protocol rules.

This book explores some of the major characters in the conflict and includes coverage, from both the front lines and behind the scenes, during some of the most acute phases of the struggle.

The account in this book includes discussions with the key players from both sides during the war, exploring their motivations, strategy and thought processes as the exhausting campaign progressed and developed.


  1. First strike
  2. March to war
  3. Scaling I - Montreal
  4. Scaling II - Hong Kong
  5. SegWit
  6. Lightning network
  7. Bitcoin Classic
  8. Hong Kong Round table
  9. Faketoshi
  10. The DAO
  11. Scaling III - Milan
  12. Bitcoin unlimited
  13. Exchanges
  14. ASICBoost
  15. Dragons’s Den
  16. Litecoin
  17. User - Activated softfork
  18. New York agreement
  19. Bitcoin Cash
  20. SegWit2x
  21. Victory


240 pages