Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-00158
Only a handful of exchanges provided any form of cryptographic reserve verification.
IndeterminateCase description
In the weeks after the Mt. Gox collapse, users of multiple other exchanges demanded proof of reserves. Only a handful of exchanges (Kraken, Bitstamp, Coinbase) provided any form of cryptographic reserve verification. The majority refused or issued vague statements. Customers of non-audited exchanges had no basis to trust published balances.
Custody context
| Stress condition | Documentation absent |
| Custody system | Exchange custody |
| Outcome | Indeterminate |
| Documentation | Unknown |
| Year observed | 2014 |
| Country | Global |
Structural dependencies observed
What this illustrates
Nobody had written down how to get back in. That knowledge existed only in the owner's head. It's not clear whether anyone ever regained access.
Outcome interpretation
Not enough information is available to determine the outcome.
Source
Publicly Reported
Evidence type
News article
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.