Samourai Wallet Seizure: Recovering Bitcoin After Platform Shutdown
SurvivedWallet passphrase was unavailable — a recovery path existed and access was restored.
On April 28, 2024, a BitcoinTalk user reported that Bitcoin deposited to their Samourai Wallet became inaccessible following the FBI's shutdown of the platform. The user had attempted to receive 200 EUR in Bitcoin and observed 5 EUR from a prior transaction in the wallet. Within minutes of confirming receipt, the available balance displayed as 0.0000000 BTC despite on-chain confirmations.
When Samourai Wallet's infrastructure was seized by federal authorities, the user attempted standard wallet recovery by importing their 12-word BIP39 seed phrase into alternative custodial tools—Coinomi, Exodus, and Sparrow—but all instances showed zero balance with neither transaction appearing. The situation was resolved through community troubleshooting on BitcoinTalk. Contributors identified the root cause: Samourai Wallet implements a required optional BIP39 passphrase (a 13th word or extended passphrase) in addition to the standard mnemonic seed. Without this passphrase, recovery generates cryptographically different keys and addresses, producing an empty wallet that appears to have lost all funds.
The user confirmed successful recovery after providing the correct passphrase, at which point both transactions reappeared. The incident highlighted a critical dependency: Samourai's non-standard wallet architecture required users to retain custody of an additional secret beyond the standard seed backup. Community members emphasized urgent migration to open-source alternatives such as Sparrow or Electrum given the regulatory environment, and provided technical guidance on correct BIP44/49/84 derivation paths for legacy, wrapped SegWit, and native SegWit address recovery.
| Stress condition | Passphrase unavailable |
| Custody system | Software wallet |
| Outcome | Survived |
| Documentation | Present and interpretable |
| Year observed | 2024 |
Why passphrases fail years after they are set
The failure mode documented consistently across observed cases is temporal: the passphrase is set with confidence, not used for an extended period, and then cannot be reproduced exactly when needed. A single character difference — different capitalization, an added space, a slightly different special character — produces a different wallet with a zero balance. The holder may be certain they remember the passphrase while being unable to produce the exact string that was originally set.
What makes this particularly difficult is that there is no signal at the moment of failure. A wrong passphrase does not produce an error message. It opens an empty wallet. The holder sees a zero balance and typically concludes the passphrase was wrong — but without knowing which part was wrong, or by how much.
Professional passphrase recovery services can attempt permutations when the holder has partial information: they remember the general structure, typical patterns they use for passwords, the approximate length, or that it included a specific word. Recovery from total non-recollection is not feasible.
The preventive action is to store a passphrase record — not with the seed phrase, which would defeat its security purpose, but in a separate secure location accessible to the holder and potentially a designated recovery person. A passphrase that exists only in memory has a time horizon: it will eventually be forgotten, and the timing is unpredictable.
Translate