‘Thought I was screwed’: Man recovers $400K in bitcoin after forgetting password for 11 years — with help from AI

After a string of expletives, the account wrote, “OMG CLAUDE JUST CRACKED THIS S—,” referring to regaining access to roughly 5 bitcoins, currently worth close to $400,000, with the aid of Claude.

According to the thread, the bitcoins had been sitting untouched since the user’s college days. He said he originally bought the cryptocurrency when it traded at roughly $250 per coin, but he eventually lost access after changing the wallet password while under the influence of a mind-altering substance (2).

The password, later revealed in the thread, reportedly referenced the owner’s affinity for drug use and disdain for police. It has hopefully been changed since.

How Claude saved the day

For years, the user said he tried unsuccessfully to recover the funds, cycling through countless password combinations and recovery attempts. The breakthrough apparently came after he uploaded files from an old college computer into Claude.

But despite the online hype, Claude did not “hack” the wallet responsible for bitcoins, Bitcoin itself, or crack any encryption used by Bitcoin.

Instead, the AI helped the user sort through and decrypt old files. It then identified a wallet backup that appeared to predate the password change.

In the files was an old mnemonic phrase — a backup of a crypto wallet (3). Mnemonic phrases consist of 12-24 words from a standardized list, which are then combined into a phrase that serves as the master key for the user’s account.

So, ultimately, @cprkrn regained access to the wallet using valid recovery data.

The story spread like wildfire, and many X users pointed out that the real value of the AI assistant was helping organize and interpret years-old digital clutter rather than bypassing the Bitcoin Project’s security itself.

Still, the incident highlights a growing issue in crypto: forgotten digital wealth.

Some crypto is gone for good

It’s hard to put an exact figure on the amount of bitcoin wealth that has been lost, but it’s considerable.

As reported by Reuters, blockchain analytics firm Chainalysis estimated 20% of all mined bitcoins could be inaccessible as of 2020, and more recent analysis from Unchained Capital indicates about 3.8 million bitcoins (making up roughly 19% of the circulating supply) may be unreachable (4).

Ledger, a maker of hardware wallets and other crypto accessories, reports that between 2.3 million and 3.7 million bitcoins (11% to 18% of the fixed maximum supply of 21 million), or possibly more, might be permanently inaccessible due to things like forgotten passwords, lost private keys or destroyed hardware (5).

High-profile cases include James Howells, who accidentally buried a hard drive containing the keys to 8,000 bitcoins (worth over $1 billion as of May 2026) in a landfill (6), and Stefan Thomas, who locked himself out of 7,002 bitcoins on an IronKey device (a hardware-encrypted USB flash drive) after forgetting the password (7).

The reason why they can be so hard to retrieve is that Bitcoin wallets are decentralized, so there’s often no customer support line or password reset option once access is lost. On the Bitcoin Project’s own website, it explicitly states that in non-custodial/self-custody wallets, users alone control their privacy, and there is no central authority to help recover access (8).

In other words, while self-custody gives users complete control over their assets, it also means there may be no one to help recover funds if login credentials or backup phrases are lost. That said, it gives would-be investors great power and control over the security of their assets.

With great power comes great responsibility

For many investors, part of crypto’s appeal is exactly that level of ownership and independence. Unlike traditional banking systems, cryptocurrencies allow users to directly control and store their assets without relying on centralized institutions or intermediaries.

Ledger argues on their website that decentralization can offer greater financial autonomy, greater control over personal wealth and protection against some limitations of traditional financial systems (9).

But that freedom also comes with responsibility. In the case of @cprkrn, the experience appears to have left a lasting impression. In fact, he joked in his original post that he’s going to name his future child after Anthropic CEO Dario Amodei.

Considering he just recovered nearly $400,000 in bitcoin, it may be a fair trade.

Take the reins

The risk of losing it all, just like @cprkrn nearly did, is part of the reason many newer investors are choosing regulated crypto platforms over managing complex wallet files entirely on their own.

With platforms like Kraken, not only is buying and trading cryptocurrencies straightforward, but so is accessing your account. And 24/7 support is available via live chat, phone or email if you ever have any questions.