Hack history / 2020 / Hack or exploit
Bitcoin Gold
Hack or exploit on Jan 23, 2020 · Validator Key Compromised
SOURCES DISAGREE ON DATE OR LOSS · 2 SOURCES
Lost
$70K
sources: $70K to $90K
Returned
none listed
as the sources state it
Rank
#1,843
among thefts by dollars lost
What happened
Bitcoin Gold suffered two 51% attacks on January 23-24, 2020, resulting in 29 blocks being reorganized and deep chain reorgs that enabled double-spending attacks. Attackers rented hash power from NiceHash for ~$1,200 per attack and successfully double-spent approximately 7,167 BTG (~$70K) across two separate attacks. Binance adjusted its confirmation requirements after the incident.
Details
- Date
- Jan 23, 2020
- Kind
- Hack or exploit
- Method
- Validator Key Compromised
- How in
- Keys, accounts and infrastructure
- Target
- Layer 1
- Chains
- Bitcoin Gold
Reported by
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Cite this page
SwanBluechip, "Bitcoin Gold hack, Jan 23, 2020: $70K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht49aac616fd/ (data as of 2026-10-31).