Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-00193
Multisig quorum failure — exchange 2015
SurvivesCase description
A Bitcoin startup that used Copay multisig for treasury discovered in March 2015 that one of its three key holders had left the company and wiped their device before departure. The remaining two shareholders could form a 2-of-3 quorum but the departing employee had used a non-standard derivation path. The wallet had to be reconstructed from partial backups over several weeks.
Custody context
| Stress condition | Multisig quorum failure |
| Custody system | Exchange custody |
| Outcome | Survives |
| Documentation | Unknown |
| Year observed | 2015 |
| Country | Unknown |
Structural dependencies observed
Outcome interpretation
Access remained possible under the reported conditions.
Source
Publicly Reported
Evidence type
Forum post
Related cases involving multisig quorum failure
77 cases involve multisig quorum failure
512 cases involve exchange custody
View archive statistics →
This archive documents observed custody survivability failures. It does not attempt to document all Bitcoin losses or security incidents.
Submit a case
← All cases
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.
Translate