hack

Negative events and Bitcoin peaks
Disclaimer for brave new world: Not financial advice.
Major local Bitcoin peaks followed by meaningful #corrections were:
1. June 2011
2. November 2013
3. December 2017
4. November 2021
5. October 2025 (current local top so far)
I. After June 2011:
* Bitcoinica hack — March 2012 (~9 months later)
* Bitcoin Savings & Trust (Pirateat40) collapse — August 2012 (~14 months later)
II. After November 2013:
* Mt.Gox #bankruptcy — February 2014 (~4 months later)
III. After December 2017:
* BitConnect shutdown — January 2018 (~2 months later)
* Coincheck hack — January 2018 (~2 months later)
* Cryptopia hack — January 2019 (~13 months later)
* QuadrigaCX collapse — January 2019 (~13 months later)
IV. After November 2021:
* Terra / UST / Luna — May 2022 (~6 months later)
* Celsius — June 2022 (~7 months later)
* Three Arrows Capital (3AC) — June 2022 (~7 months later)
* Voyager Digital — July 2022 (~8 months later)
* Vauld — July 2022 (~8 months later)
* BlockFi bankruptcy (although the issues started earlier) — November 2022 (~12 months later)
* #FTX / #Alameda — November 2022 (~12 months later)
* Genesis Global Capital withdrawal freeze — November 2022 (~12 months later)
These were major negative events that followed each new local $BTC peak.
Many of the largest crypto crises historically appeared roughly 6–13 months after market tops.
Disclaimer 2:
this is not a proven causal relationship.
The sample is small, subjective and incomplete.
There were also other major negative events, including the 2016 DAO hack, the 2019 Binance #Hack and others.
V. Since October 2025, there have been no major hacks, bankruptcies or similar events so far, which could suggest (not a signal or prediction) that:
• either hidden stress somewhere in the system still hasn’t surfaced,
• or the market structure has changed.