Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01317
Seed unavailable — hardware wallet (2025)
ConstrainedCase description
A 2025 case involved a hardware wallet held by an elderly Bitcoin holder whose home had been burgled. The thieves had taken a locked box that contained the holder's seed phrase backup without knowing what it was—they were looking for cash and jewellery. The hardware wallet itself remained in the home. The holder still had access to their funds via the device and its PIN but was now in a single-point-of-failure situation. A custody specialist was engaged to create a new multisig arrangement, generating new keys with properly documented seed phrases. The existing wallet's funds were swept to the new multisig. The old wallet was kept as a decoy device with a small balance.
Custody context
| Stress condition | Seed phrase unavailable |
| Custody system | Hardware wallet (single key) |
| Outcome | Constrained |
| Documentation | Unknown |
| Year observed | 2025 |
| Country | United States |
What this illustrates
Without the seed phrase, the wallet couldn't be restored — on any device, ever. Whether full access was ultimately possible is unclear, but significant delay or outside intervention was involved.
Outcome interpretation
Access remained possible, but only with delay, dependence, or significant difficulty.
Source
Privately Reported
Evidence type
News article
Related cases involving seed phrase unavailable
146 cases involve seed phrase unavailable
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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