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Executive Hashpower

Executive Hashpower is what happens when miners decide to act, ignoring markets temporarily. Not following short-term benefit, but a potential future profit (monetary or reputational).

PrecedentWhenWhereHeightDurationReorgAccidentalHashwarDouble-spendSplit
1.Bug + 51 blocks Reorg2010-08-15 (11.3y)Bitcoin746378h 27m51 blocks
2.Bug + 24 blocks Reorg2013-03-11 (8.7y)Bitcoin2254306h 20m24 blocks
3.BTC-BCH Split2017-08-01 (4.3y)BTC-BCH4785594h 56m
4.BCH-BSV Split + Hashwar2018-11-15 (3y)BCH-BSV556767~9 days
5.Segwit theft + Reorg2019-05-15 (2.6y)BCH58269823m2 blocks
6.BCH-XEC Split2020-11-15 (1y)BCH-XEC66164820h
7.XEC Hashwar (empty blocks)2020-11-28 (1y)XEC662397~5 days198 blocks

Bug + 51 blocks Reorg

Resume

Bug CVE-2010-5139 in Bitcoin-Qt version 0.3.10.

Result

  • Downtime: 8h 27m
  • 51 valid blocks lost
  • Incident fixed by hotfix + reorg

Participants

Unknown