CustodyStress
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Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01087

Seed phrase unavailable — hardware wallet 2022

Indeterminate
Case description
A pattern documented in 2022 involved hardware wallet users who had stored their seed phrase backup in a fireproof safe but found the paper illegible after a house fire—the safe had protected the paper from flames but not from the extreme heat and moisture inside the safe during the fire. Recovery services noted that seed phrases stored on paper in safes that are not rated for paper preservation temperatures frequently become unreadable in fires. Stamped metal seed storage plates were the primary recommendation following these incidents.
Custody context
Stress conditionSeed phrase unavailable
Custody systemHardware wallet (single key)
OutcomeIndeterminate
DocumentationUnknown
Year observed2022
CountryInternational
Structural dependencies observed
Technical specialist required
What this illustrates
Recovery needed someone with specialized technical knowledge who wasn't available. It's not clear whether anyone ever regained access.
Outcome interpretation
Not enough information is available to determine the outcome.
Source
Privately Reported
Evidence type
News article
Evidence link
https://btcnewsanalysis.com/2022/08/16/how-a-trezor-wallet-passphrase-taking-a-lifetime-to-brute-force-was-cracked-by-keychainx/
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146 cases involve seed phrase unavailable 274 cases involve hardware wallet (single key) View archive statistics →
This archive documents observed custody survivability failures. It does not attempt to document all Bitcoin losses or security incidents. Submit a case
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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.
Terms guide
Outcome terms
Survives
Access remained possible under the reported conditions.
Constrained
Access remained possible, but only with delay, dependence, or significant difficulty.
Blocked
Access was not possible under the reported conditions.
Indeterminate
There was not enough information to determine the outcome.
Structural terms
Single-person knowledge
Recovery depended on information or capability held by one individual who was unavailable.
Institutional dependence
Recovery depended on a third-party institution or service that was inaccessible or uncooperative.
Documentation gap
Recovery depended on instructions that were missing, incomplete, or unclear.
Authority mismatch
The person with legal authority to act did not have operational access, or vice versa.
Original text
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