Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01354
Seed phrase unavailable — hardware wallet — United States 2025
ConstrainedCase description
A 2025 case involved a holder who discovered that the titanium backup plate on which they had stamped their seed phrase had been stored for seven years next to a strong neodymium magnet used for a workshop fixture. While titanium is non-magnetic and not directly affected, the holder noticed that the impressions in several letters had been distorted by the mechanical vibration and physical pressure from the workshop environment over time. A specialist was able to read all 24 words under magnification and document them correctly, though the holder had a stressful period believing the backup was compromised before the reading was confirmed.
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.