CustodyStress
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Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01299

The original holder died in 2024.

Survives
Case description
A recurring pattern documented by recovery firms in 2024 involved early Bitcoin holders who had stored a seed phrase by splitting it—giving some words to family members, storing others separately. The original holder died in 2024. The family succeeded in assembling all portions of the seed phrase but discovered that different family members had recorded different numbers of words, and when combined the total was 11 words rather than 12. The missing 12th word was a BIP39 checksum word that could be systematically recovered: there were 128 possible valid 12th words. A recovery service tested all possibilities and identified the correct combination.
Custody context
Stress conditionDocumentation absent
Custody systemHardware wallet (single key)
OutcomeSurvives
DocumentationUnknown
Year observed2024
CountryInternational
Structural dependencies observed
Single point of failure
Outcome interpretation
Access remained possible under the reported conditions.
Source
Privately Reported
Evidence type
News article
Related cases involving documentation absent
193 cases involve documentation absent 274 cases involve hardware wallet (single key) View archive statistics →
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Framework references
Terms guide
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.
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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