CustodyStress
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Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01229

Passphrase unavailable — Bitcoin Core (2024)

Indeterminate
Case description
A 2024 guide published by KeychainX wallet recovery services updated practitioners on the landscape of forgotten wallet passwords. The guide noted that the most common recovery scenario involved early Bitcoin Core wallet holders who had set passwords in the 2013–2017 period using patterns they no longer recognised. The second most common was Trezor hardware wallets with a 25th-word passphrase set at setup that was never recorded. KeychainX reported that as Bitcoin's price recovered toward all-time highs in 2024, the volume of recovery requests increased substantially as holders with dormant wallets attempted to regain access for the first time in years.
Custody context
Stress conditionPassphrase unavailable
Custody systemDesktop Software Wallet
OutcomeIndeterminate
DocumentationUnknown
Year observed2024
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
Privately Reported
Evidence type
News article
Evidence link
https://keychainx.medium.com/how-to-recover-lost-bitcoin-passwords-c34c42ee6f17
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 25 cases involve desktop software wallet 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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