X user @cprkrn had all but given up hope on trying to get back five bitcoin stored in a wallet that he couldn’t remember the password to. After buying them in 2015, he stored them in a Blockchain.com wallet and backed it up with a mnemonic phrase. But not long afterwards, he changed the password while he was stoned and then couldn’t remember it.
Eleven years and many, many unsuccessful attempts later, he turned to generative artificial intelligence for help. And it worked. He uploaded everything from his old college computer to Anthropic’s Claude, which then spent eight weeks combing through it. The bot located an encrypted wallet backup from December 2019 and was able to decrypt it using the wallet’s original mnemonic phrase, which @cprkrn had discovered in an old notebook. This revealed the private keys, which had remained unchanged.
The user uploaded a summary of the chat with Claude for anyone who is curious to dig into the details.
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