How Anthropic Claude Helped Recover 5 Bitcoin Lost for Over 10 Years

TLDR

• A crypto user known as Cprkrn recovered 5 Bitcoin worth around $320,000 using Anthropic’s Claude AI
• The wallet had been dormant since early 2015 after he forgot a changed password
• Claude searched over 1GB of data across multiple devices, drives, and email accounts
• Over 3.5 trillion passwords were tested before a seed phrase from a college notebook unlocked the wallet
• The recovery cost just $15 in AI compute

Cprkrn, a pseudonymous user on X, says he recovered five Bitcoin worth roughly $320,000 after using Anthropic’s AI chatbot Claude to help him regain access to a wallet he had been locked out of for more than a decade.

The wallet had been sitting untouched since early 2015. Cprkrn said the problem started after he changed his password on blockchain.info and forgot the new one. He had created complex passwords and simply could not recall the updated one.

For eight weeks, he tried to brute force his way back in. Claude helped him test around 34 billion passwords using BTCRecover, an open-source recovery tool, and the programming language Python. None of them worked.

Claude then used a password cracking tool called Hashcat to test another 3.4 trillion passwords. That also failed. The entire process cost just $15 in AI compute, according to a summary Claude produced.

As a final attempt, Cprkrn gathered old college notebooks and a laptop he had used years earlier and fed the data into Claude. In total, Claude searched through more than one gigabyte of data, spanning two Mac computers, two external hard drives, an Apple Notes export, iCloud Mail, a Gmail inbox, and X messages.

How the Wallet Was Finally Unlocked

Claude found a wallet backup file on his old college computer dated December 2019. Using a mnemonic from one of his notebooks, Cprkrn was able to decrypt that file and recover the seed phrase for the wallet.

Blockchain records support the story. Data from Blockchain.com shows approximately 5 Bitcoin moved from wallet address “14VJy…ofuE6” across five transactions on May 13, 2026. The coins had not moved since early 2015.

The story spread quickly on social media, drawing attention from well-known crypto figures including Nic Carter, Laura Shin, and Jesse Pollak.

Not everyone was impressed with the framing, though. Some in the crypto community said Cprkrn overstated Claude’s role. Reddit user MeteorSwarmGallifrey said Claude “didn’t do anything other than search his files” and that nothing “groundbreaking” had occurred.

Lost Bitcoin Is a Widespread Problem

The recovery draws attention to how many Bitcoin remain permanently inaccessible. Industry estimates put the number of lost or inaccessible Bitcoin between 2.3 million and 4 million coins, roughly 11% to 19% of the total supply. Entire businesses exist to help people try to recover lost crypto.

This case is different from others like James Howell’s, who in 2025 was still trying to retrieve a hard drive with thousands of Bitcoin from a landfill.

The post How Anthropic Claude Helped Recover 5 Bitcoin Lost for Over 10 Years appeared first on CoinCentral.