Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-00475
When a run on the exchange occurred in April 2017 following rumours of insolvency,
BlockedCase description
An exchange that had been operating since 2014 was found to have been operating fractional reserves. When a run on the exchange occurred in April 2017 following rumours of insolvency, the exchange suspended withdrawals citing a 'temporary system upgrade.' An independent analysis showed the exchange had consistently reported higher BTC reserves than it actually held.
Custody context
| Stress condition | Documentation absent |
| Custody system | Exchange custody |
| Outcome | Blocked |
| Documentation | Unknown |
| Year observed | 2017 |
| Country | Unknown |
Structural dependencies observed
What this illustrates
Nobody had written down how to get back in. That knowledge existed only in the owner's head. Access was not recoverable.
Outcome interpretation
Access was not possible under the reported conditions.
Source
Publicly Reported
Evidence type
Forum post
Evidence link
Related cases involving documentation absent
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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