Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01145
The April 2023 deadline for Mt.
IndeterminateCase description
The April 2023 deadline for Mt. Gox creditors to provide repayment information revealed that many creditors had not updated their contact details or banking information in the nine years since the exchange collapsed. The trustee could not commence repayments without current KYC-compliant information and valid Bitcoin addresses. Creditors who had moved countries, changed email addresses, or no longer had access to old authentication methods were unable to receive distributions and faced losing their claims if they could not re-establish their identity.
Custody context
| Stress condition | Documentation absent |
| Custody system | Exchange custody |
| Outcome | Indeterminate |
| Documentation | Unknown |
| Year observed | 2023 |
| Country | Japan |
What this illustrates
Nobody left instructions. Whoever needed to recover the funds had no starting point. 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
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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