Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01143
Passphrase unavailable — hardware wallet 2023
IndeterminateCase description
Trezor forum moderators published a reminder in early 2023 that the most common support case they received involved passphrase-locked hidden wallets—often set years earlier and forgotten. The Trezor forum post emphasized that passphrases are not stored anywhere on the device and cannot be recovered by Trezor support. Cases where users had the seed phrase but not the passphrase represented a complete access block, with recovery possible only through brute-force services if the passphrase was short or had a guessable pattern.
Custody context
| Stress condition | Passphrase unavailable |
| Custody system | Hardware wallet (single key) |
| Outcome | Indeterminate |
| Documentation | Unknown |
| Year observed | 2023 |
| Country | International |
Structural dependencies observed
What this illustrates
The seed phrase was there, but the passphrase that unlocked it was gone. Both are required. 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 passphrase unavailable
217 cases involve passphrase 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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