Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01288
Documentation absent — hardware wallet (2024)
BlockedCase description
As Bitcoin passed $100,000 in December 2024, a wave of media coverage on lost Bitcoin highlighted the scale of permanently inaccessible supply. Ledger analysts estimated that between 2.3 million and 3.7 million Bitcoin were permanently lost—representing up to 18% of the total eventual supply. The estimate was based on wallet addresses that had not moved Bitcoin in over a decade combined with on-chain activity analysis suggesting the keys were likely lost rather than held deliberately. The analysis distinguished between long-term holders (HODL behaviour) and genuinely inaccessible wallets using time-series patterns in transaction activity.
Custody context
| Stress condition | Documentation absent |
| Custody system | Hardware wallet (single key) |
| Outcome | Blocked |
| Documentation | Unknown |
| Year observed | 2024 |
| Country | International |
Structural dependencies observed
What this illustrates
There was only one way in. When that path was gone, so was access. Access was not recoverable.
Outcome interpretation
Access was not possible under the reported conditions.
Source
Publicly Reported
Evidence type
News article
Related cases involving documentation absent
193 cases involve documentation absent
274 cases involve hardware wallet (single key)
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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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