CustodyStress
Archive › Passphrase unavailable
Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-00998

Passphrase unavailable — hardware wallet (2022)

Indeterminate
Case description
A documented pattern in 2022 hardware wallet recovery cases involved users who had set BIP39 passphrases years earlier and had either forgotten the exact string or stored an incorrect version. Because hardware wallets generate a completely different wallet for even a single-character passphrase variation, having 'almost' the correct passphrase produced a valid but empty wallet. Recovery services noted that cases involving passphrases were dramatically harder than PIN or seed recovery because there was no checksum to verify partial correctness.
Custody context
Stress conditionPassphrase unavailable
Custody systemHardware wallet (single key)
OutcomeIndeterminate
DocumentationUnknown
Year observed2022
CountryInternational
Structural dependencies observed
Technical specialist required
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
Evidence link
https://btcnewsanalysis.com/2022/08/16/how-a-trezor-wallet-passphrase-taking-a-lifetime-to-brute-force-was-cracked-by-keychainx/
Related cases involving passphrase unavailable
A 2025 recovery case involved a Bitcoin Core wallet.dat file from 2015.
Desktop Software Wallet · 2025 Survives
Wallets containing 0.5–2 BTC that had been uneconomical to pursue recovery services
Desktop Software Wallet · 2025 Constrained
Passphrase unavailable — Ledger Nano S (2025)
Hardware wallet (single key) · 2025 Blocked
217 cases involve passphrase 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.