Claude helps recover access to 5 BTC after more than 10 years

Key points:

• Claude helped recover 5 BTC worth approximately $395,000.
• The user tested over 3.5 trillion password combinations.
• The AI didn’t crack Bitcoin — it found an old backup file.

A user on X known as Cprkrn announced that with the help of Claude AI, he regained access to a Bitcoin wallet containing 5 BTC that had been inaccessible for over a decade. The story quickly went viral on social media, but it wasn’t about hacking a Bitcoin wallet — it was about locating an old backup file and recovering the password.

Source: X.com

According to the wallet owner, he had used complex passwords for blockchain.info and eventually forgot one after making changes. For eight weeks, he attempted to brute-force the password using recovery tools and rented computing power.

How Claude helped find the wallet

As a final attempt, the user uploaded a large volume of old data into Claude: files from two Mac computers, external hard drives, Apple Notes, iCloud and Gmail emails, and X messages — totaling over 1 GB.

The breakthrough came from an old college laptop. Claude identified a wallet backup file dated December 2019. Using a password the user had previously written down in a notebook, he was able to decrypt the backup.

Source: X.com

The recovered file contained the same private keys as the current wallet, allowing full access to the BTC without breaking any cryptography.

Prior to this, the user had unsuccessfully tested around 3.5 trillion password combinations using BTCRecover, Hashcat, and Python scripts. He reported that the total computing cost was only about $15.

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Why this is not considered a hack

After the post gained traction, many social media users claimed Claude had “hacked” a Bitcoin wallet. Experts quickly pushed back on that narrative. In reality, the AI simply helped automate the search through old files and archives.

A genuine breach of the Bitcoin network would require either a major breakthrough in quantum computing or a critical vulnerability in elliptic curve cryptography — something that hasn’t been discovered in Bitcoin’s more than 16 years of existence.

Industry estimates suggest between 2.3 million and 4 million BTC remain permanently inaccessible — up to 19% of Bitcoin’s total supply. Many of these coins were lost due to forgotten seed phrases, passwords, or destroyed devices. The Cprkrn story highlights how AI tools can dramatically simplify the process of finding old backups and recovering access to long-lost wallets.