Key Highlights
- An anonymous cryptocurrency enthusiast known as Cprkrn successfully retrieved 5 Bitcoin valued at approximately $320,000 with assistance from Anthropic’s Claude AI
- The digital wallet remained inactive since the beginning of 2015 following a password change that was subsequently forgotten
- Claude analyzed more than 1GB of information spanning numerous devices, storage drives, and email platforms
- More than 3.5 trillion password combinations were attempted before a seed phrase discovered in an old college journal provided access to the wallet
- The entire recovery operation required only $15 worth of AI computational resources
An individual operating under the pseudonym Cprkrn on X has reported successfully retrieving five Bitcoin valued at approximately $320,000 by utilizing Anthropic’s artificial intelligence chatbot Claude to regain access to a cryptocurrency wallet that had remained inaccessible for over ten years.
The digital wallet had remained dormant since the start of 2015. According to Cprkrn, the issue originated when he modified his password on blockchain.info and subsequently couldn’t remember the new credentials. Having generated sophisticated passwords, he found himself unable to recall the updated version.
For two months, he attempted to force his way back into the account. Claude assisted him in testing approximately 34 billion password combinations using BTCRecover, an open-source recovery application, along with the Python programming language. Unfortunately, none proved successful.
Claude subsequently employed a password cracking utility called Hashcat to evaluate an additional 3.4 trillion password possibilities. This approach also proved unsuccessful. The complete operation required merely $15 in AI computational expenses, based on a report generated by Claude.
As a last resort, Cprkrn collected old university notebooks and a previously used laptop, uploading the information to Claude. Altogether, Claude examined over one gigabyte of information across two Mac computers, two external storage devices, an Apple Notes export, iCloud Mail, a Gmail account, and X direct messages.
The Breakthrough That Restored Access
Claude discovered a wallet backup file on his former college computer with a timestamp from December 2019. Utilizing a mnemonic phrase from one of his notebooks, Cprkrn successfully decrypted the file and retrieved the seed phrase for the wallet.
Blockchain data validates the account. Information from Blockchain.com indicates approximately 5 Bitcoin transferred from wallet address “14VJy…ofuE6” through five separate transactions on May 13, 2026. The cryptocurrency had remained stationary since early 2015.
The narrative gained rapid traction on social platforms, attracting notice from prominent cryptocurrency personalities including Nic Carter, Laura Shin, and Jesse Pollak.
However, not everyone found the presentation compelling. Several members of the crypto community suggested Cprkrn exaggerated Claude’s contribution. Reddit user MeteorSwarmGallifrey stated Claude “didn’t do anything other than search his files” and that nothing “groundbreaking” had occurred.
Inaccessible Bitcoin Remains a Significant Issue
The successful recovery highlights the broader problem of how much Bitcoin remains permanently locked away. Industry analysts estimate that between 2.3 million and 4 million coins are lost or inaccessible, representing approximately 11% to 19% of the total available supply. Specialized companies have emerged solely to assist individuals attempting to recover lost cryptocurrency.
This situation differs from cases like James Howell’s, who as of 2025 continued attempting to recover a hard drive containing thousands of Bitcoin from a landfill site.
Cprkrn himself acknowledged he “would’ve been too dumb to figure it out” without Claude’s help.
