Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-00542
Multisig quorum failure — exchange custody (2018)
ConstrainedCase description
A June 2018 case describes a DAO-structured investment vehicle whose Bitcoin treasury required token holder votes to release funds. During a governance attack, a malicious actor acquired enough governance tokens to pass a treasury-draining proposal. The multisig requirement limited the immediate damage but the attacker's vote could not be reversed.
Custody context
| Stress condition | Multisig quorum failure |
| Custody system | Exchange custody |
| Outcome | Constrained |
| Documentation | Unknown |
| Year observed | 2018 |
| Country | Unknown |
Structural dependencies observed
What this illustrates
Getting access back required help from an institution — and that help wasn't available. Whether full access was ultimately possible is unclear, but significant delay or outside intervention was involved.
Outcome interpretation
Access remained possible, but only with delay, dependence, or significant difficulty.
Source
Publicly Reported
Evidence type
Forum post
Evidence link
Related cases involving multisig quorum failure
77 cases involve multisig quorum failure
512 cases involve exchange custody
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This archive documents observed custody survivability failures. It does not attempt to document all Bitcoin losses or security incidents.
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Framework references
Where Bitcoin Custody Intersects Legal and Fiduciary Authority
Where custody creates gaps in estate planning, fiduciary duty, and professional responsibility.
Professional Scope Boundary Matrix
What each professional or product covers, what they do not, and where gaps form between them.
The Independent Assessment Layer in Bitcoin Custody
How independent diagnostic layers emerge when multiple parties depend on shared infrastructure.
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