A Bitcoin holder known as Cprkrn regained access to roughly 5 BTC after being locked out for nearly 11 years, with the recovered coins valued in the report at about $398,000. He had bought Bitcoin during college when the price was around $250 per coin, later changed his wallet password for security reasons, and then forgot the new one.
A long password hunt led nowhere
Over the years, Cprkrn tried to recover the wallet through brute-force methods. He used open-source tools including BTCRecover and Hashcat and tested what the report described as trillions of possible combinations, but none of those attempts worked. The issue was not a failure in Bitcoin itself. It was a local wallet access problem tied to a password he could no longer reconstruct.
As a last attempt, he uploaded files from an old computer to Claude AI. Instead of continuing the brute-force route, Claude identified a forgotten wallet.dat file. That file is used by Bitcoin Core and stores critical wallet data.
Mnemonic clue and wallet file unlocked the funds
Cprkrn had also written down a sentence containing a mnemonic clue, described in the report as a master-key style element for crypto wallets. Claude paired that clue with data from the wallet.dat file, which led to the successful recovery of the password and restored access to the funds.
“It found an old wallet file and using the mnemonic, we finally cracked it. I was locked out for 11 years because of confusion and changing the password. In the end, the problem was solved in the simplest way possible.”
Screenshots shared by Cprkrn showed Claude working through command-line steps, analyzing BTCRecover’s algorithm and attempting decryption with a “sharedKey + password” combination. The terminal then displayed messages including “PRIVATE KEYS DECRYPTED! Let me convert to WIF format and verify addresses,” followed by “WE GOT IT!!! THE 5 BTC IS YOURS!” The result was that the wallet’s private keys were successfully decrypted and the coins became accessible again.
Experts say Bitcoin encryption was not broken
The story spread quickly on social media, where some users framed it as Claude AI breaking Bitcoin’s encryption. The report says a recovery expert pushed back on that claim. According to that explanation, Claude did not bypass Bitcoin’s cryptographic protections; it analyzed available files and clues to find a workable recovery path.
A Reddit thread on the incident drew thousands of comments. Some focused on the irony that years of brute-force attempts were beaten by a forgotten file. Others argued that knowing to look for wallet.dat or a mnemonic clue is not obvious unless someone already understands how wallet storage and file backups work. User “irritatedellipses” made that point directly in the discussion.
Some readers also questioned whether the story was authentic, while others connected it to their own lost crypto holdings. Based on the details shared publicly, the case highlights AI as a tool for organizing evidence, finding overlooked wallet data, and assisting technical recovery work rather than defeating Bitcoin’s underlying security model.