An anonymous investor recovered a Bitcoin wallet he feared was lost forever. According to the owner’s reports, Anthropic’s Claude AI played a decisive role in locating the data needed to unlock the funds.
The investor lost access to his 5 BTC (valued at approximately $400,000 at current rates) back in 2015. For over a decade, he struggled to recall a password he had changed while in an "unstable state." By his own estimates, he had cycled through roughly 3.5 trillion character combinations over the years, all without success.
The turning point
The situation shifted when the user discovered an old paper notebook from his college days. Inside was a mnemonic phrase that turned out to be his password before the fateful change. However, standard login attempts using that phrase still failed to open his current wallet.
"As a last-ditch effort, I dumped the entire data set from my old college computer into Claude. The AI analyzed the files and discovered an old backup in wallet.dat format," the owner shared.
For context, a wallet.dat file is the primary data storage for a Bitcoin wallet, containing the private keys. Without this file, or a valid seed phrase, accessing funds on the blockchain is impossible.
How the AI solved it
The AI was able to cross-reference the archived wallet file with the notes found in the notebook. It discovered that the recovered phrase was only valid for that specific older backup version, which had been created before the password was updated to a more complex one.
