SP4RK7 Locked Out of Protoshares Wallet: Single-Character Password Error, Recovery Bounty Offered
IndeterminateWallet passphrase was unavailable — whether access was ultimately recovered is not known.
On November 30, 2013, BitcoinTalk user SP4RK7 posted in the encrypted wallet recovery thread describing a Protoshares wallet locked with encryption that appeared to contain a single-character error in the passphrase. The user had written down a 12-character lowercase alphanumeric password at the time of wallet encryption but suspected the actual encrypted passphrase differed by one character—either a missed keystroke, an extra character inadvertently added, or a misidentified character during entry. SP4RK7 offered a 0.25 BTC bounty for step-by-step Windows 7 recovery guidance.
Protoshares was a cryptocurrency derived from the Bitcoin codebase that used identical wallet encryption formats, making Bitcoin recovery tools potentially applicable. Community member KieranJones1 responded with an offer to write a detailed recovery guide with screenshots in exchange for the bounty. At the time of the post, Bitcoin had recently surged past $1,000 for the first time, reaching approximately $1,050 by late November 2013. At those prices, even a modest wallet holding could justify professional recovery effort.
The case reflected a broader cluster of altcoin custody failures in late November 2013, when sudden valuation spikes across altcoins made previously low-priority inaccessible holdings suddenly economically significant. No follow-up posts by SP4RK7 confirmed whether recovery succeeded, was abandoned, or remained ongoing. The incident documents an era when wallet recovery services were nascent and individual users were still learning the consequences of password management on early cryptocurrency software.
| Stress condition | Passphrase unavailable |
| Custody system | Software wallet |
| Outcome | Indeterminate |
| Documentation | Partial |
| Year observed | 2013 |
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.
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