Deceased Bitcoin Miner: Funds Locked on Coinbase, Lost on SnapCard Closure
BlockedBitcoin held by a deceased owner — no recovery path was available for heirs or the estate.
A Bitcoin miner died intestate in 2016, leaving behind mining equipment and active cryptocurrency accounts on Coinbase and SnapCard, a now-defunct wallet service. The deceased had not designated a recovery contact or provided heirs with comprehensive asset documentation. During the estate investigation, family members recovered written login credentials for both platforms and API keys associated with the SnapCard account.
For Coinbase, the barrier was institutional policy rather than technical. The account was protected by two-factor authentication, and the family believed they could satisfy the second factor because they possessed the associated phone number. However, Coinbase's platform policy explicitly required proof of estate authority—typically a will, court order, or letters testamentary—before permitting withdrawal or transfer of funds. Without testamentary documentation or court intervention, Coinbase declined access despite valid credentials and second-factor authentication capability.
SnapCard presented a different constraint: the service ceased operations in March 2017. Any Bitcoin held on the platform at closure would have required withdrawal or migration before shutdown. No evidence emerged that the deceased had executed either action. The credentials and API keys became worthless once the service went offline.
The family's investigation revealed a knowledge concentration failure: the deceased had not documented holdings, holdings amounts, or asset recovery procedures. The absence of estate planning documents created a compounding legal and technical barrier. By the time the case was reported (likely late 2016 or early 2017), the outcome remained unresolved, with no verification of total holdings and no successful recovery from either platform.
| Stress condition | Owner death |
| Custody system | Exchange custody |
| Outcome | Blocked |
| Documentation | Partial |
| Year observed | 2016 |
The gap between legal ownership and operational access
Bitcoin custody was designed for use by its owner. The security model assumes that the person who set up the wallet is the same person who will use it. It does not assume that someone who has never interacted with the wallet will need to operate it months or years later, with no guidance and no one to ask.
The knowledge that dies with the owner includes more than credentials: it includes the understanding of why the setup was built a certain way, which addresses held the Bitcoin, whether a passphrase was set, where the backup was stored and why, and what the heir should do first. Without this knowledge, heirs typically face a search process before they face an access process.
Cases where heirs succeeded consistently share one feature: the owner had communicated the existence of the Bitcoin and left enough information for someone else to find and use the credentials. In most cases, this was informal — a note, a conversation, a letter in the files. Formal estate planning documents rarely contained the operational details needed for actual access.
The failure that causes heirs to lose Bitcoin is almost never the custody setup itself — it is the assumption that the setup is self-explanatory to someone who has never used it. Communicating the existence of the Bitcoin, its approximate location, and who knows how to access it adds almost no security risk while dramatically changing the inheritance outcome.
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