Claude Helps User Recover 5 Bitcoin Lost for More Than a Decade

An investor using the pseudonym cprkrn held 5 Bitcoin in 2015 but later changed and forgot the wallet password, leaving the assets inaccessible for more than 11 years. Attempts involving trillions of password combinations failed. Anthropic's Claude did not crack the encryption; instead, it reconstructed clues from existing files, demonstrating a practical use for generative AI in digital forensics and data organization.

On May 13, 2026, cprkrn described the recovery on X. He gave Claude backups, notes and code from an old college computer to analyze. The system found a wallet.dat file created before the password change, allowing him to regain access using an old password he had recently recovered. The wallet's 5 Bitcoin were worth about $395,000 on May 14; estimates in different reports ranged from about $395,000 to $400,000 because they used prices from different times.