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Man Claims Claude AI Helped Him Recover 5 Bitcoin After Forgetting Password for 11 Years

By Telemac

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Man Claims Claude AI Helped Him Recover 5 Bitcoin After Forgetting Password for 11 Years

On May 13, 2025, an X user known as Cprkrn announced he had regained access to a Bitcoin wallet containing approximately 5 BTC, worth roughly $397,000 at current market prices. This remarkable story unfolded over several weeks of intensive research, with assistance from Anthropic’s AI chatbot Claude. The wallet had been locked since early 2015, after its owner forgot the password under rather unusual circumstances. This discovery has rekindled the debate about the role of artificial intelligence in cryptocurrency security and asset recovery.

Context: The market of lost bitcoins

To understand the magnitude of this story, it is worth remembering that the problem of forgotten passwords and lost recovery phrases affects millions of cryptocurrency owners worldwide. In 2025, estimates from Ledger, a specialist in Bitcoin hardware wallets, indicate that between 2.3 and 4 million BTC are permanently lost. This range represents approximately 11 to 19 percent of Bitcoin’s maximum supply, a significant proportion of the total resource.

The reasons for these losses are diverse. Some users simply forgot their 24-word recovery phrase. Others lost their device or backup media in a household accident. Some even sent Bitcoin to incorrect addresses due to typing errors. Whatever the cause, the result is the same: digital assets are permanently locked with no possibility of reclamation. Bitcoin, by design, cannot be reset like a conventional bank password.

In 2015, when Cprkrn had created his wallet on Blockchain.com, the price of Bitcoin was trading around $250 per unit. At that time, owning 5 BTC represented an investment of a few thousand dollars, a significant sum but far from current values. Over the years, the value of these 5 BTC increased exponentially, rising from a few thousand to nearly $400,000 at the time of recovery.

The facts: Eight weeks of intensive research

The details of this recovery operation were shared publicly by Cprkrn on the X platform, where his explanatory thread accumulated over 6 million views. The complete process required approximately eight weeks of diligent work, during which the man explored every possible avenue to regain access to his locked wallet.

The starting point of this adventure dates back to 2015. At that time, Cprkrn had established a particularly complex password to protect his 5 Bitcoin on the Blockchain.com platform. This password was as follows: lol420fuckthePOLICE!*:). An unusual combination that reflected the mindset of its creator at the time. A few years later, while studying at an American college, Cprkrn decided to change this password. While there, under the influence of substances, he chose a new password that he never managed to memorize afterward. This was the beginning of more than ten years of struggle.

During these years, Cprkrn tried numerous approaches to recover his funds. He first turned to BTCRecover, a specialized Bitcoin wallet recovery tool, as well as Hashcat, a password cracking software recognized in the information security field. These attempts managed to test billions of possible combinations. Specifically, the tools tested approximately 3.4 billion passwords via BTCRecover and approximately 3.4 trillion via Hashcat, totaling nearly 3.5 trillion combinations tested without success.

Alongside these technical attempts, Cprkrn explored more traditional methods. He sifted through his old computing devices, examining two Mac computers, two external hard drives, exported Apple Notes, emails stored on iCloud, his entire Gmail inbox, as well as his old messages on the X platform. In total, he analyzed more than one gigabyte of heterogeneous data, accumulated over more than a decade of personal and professional computer use.

Automated recovery attempts were not the only ones explored. Cprkrn also tried to guess the password manually, trying different variations and combinations related to his personal memories. He tried important dates, family names, combinations linked to his daily life. Each unsuccessful attempt reinforced the feeling of powerlessness against these 5 BTC that had become inaccessible.

The breakthrough: The role of Anthropic’s Claude

It was in this context of repeated failure that Cprkrn decided to call upon artificial intelligence. He had the idea to load Claude, the chatbot developed by Anthropic, with all the files present on his old devices. The AI was tasked with scanning this data and identifying any element that might be relevant for wallet recovery.

On May 13, after eight weeks of intensive research, the breakthrough occurred. The artificial intelligence analyzed a considerable volume of data and identified an old wallet.dat file, dating from December 2019, on the computer Cprkrn used during his college years. This backup file was associated with a mnemonic phrase that the man had found in his notebooks from that period.

It was the combination of these two elements that made the wallet unlock possible. The mnemonic phrase, combined with the older wallet file that predated the password change, made it possible to reconstruct the original private keys. Cprkrn was able to transfer the 5 BTC to a new, more secure wallet, in five separate transactions, as confirmed by the Blockchain.com explorer for the address 14VJySbsKraEJbtwk9ivnr1fXs6QuofuE6.

The result of this operation proved particularly economical. The total cost in AI computing for the entire research and analysis process amounted to approximately $15. A derisory sum compared to the value of the recovered assets, which now represent nearly $400,000. This cost-benefit ratio contributed to the virality of the story on social networks.

Analysis: What Claude actually did

The exact role of Claude in this recovery sparked heated debate within the cryptocurrency and technology community. Some provocative headlines suggested that the AI had  » cracked  » the wallet password, implying a major flaw in Bitcoin’s cryptography. This interpretation is completely wrong and superficial.

In reality, Claude played an analytical assistant role rather than a hacking role. The artificial intelligence helped sort and analyze large volumes of historical data, identifying clues linked to the wallet’s older credentials. This is not really password cracking in the traditional sense of the term, but rather digital forensics and data sorting work.

Security experts explained that the recovery process required several indispensable prerequisite elements. The user had to possess a wallet backup from before the password change. He also had to have a mnemonic phrase capable of decrypting this backup. The AI simply facilitated the identification and matching of these pre-existing elements.

To be more precise, the AI performed the following tasks: it scanned and indexed all files present on the user’s devices, it identified files potentially related to Bitcoin wallets, it analyzed correlations between different file versions and available recovery phrases, and it suggested research paths based on patterns identified in the data.

Market and community reactions

This story provoked varied reactions within the cryptocurrency and financial community. On forums like Reddit, some users were severely critical of initial claims that suggested Claude had  » cracked  » the password. One commenter aptly noted:  » Claude didn’t do anything other than search his files. The headline is vague enough to make the more gullible among us think Claude did something groundbreaking. « 

Other comments pointed out that this story does not constitute a technological revolution in security. The recovery process required eight weeks of intensive work, significant prior technical knowledge from the user, and access to backup files that had existed all along. The AI facilitated the research and analysis work, but it did not bypass the underlying security measures of the Bitcoin protocol.

Reactions on the financial market were more measured. The price of Bitcoin was not significantly influenced by this news, which was considered anecdotal in the broader context of cryptocurrency news at the time. Analysts noted that this type of recovery, although spectacular, changes nothing to the market fundamentals or the underlying Bitcoin technology.

Companies specializing in cryptocurrency recovery saw in this story a validation of their approach. Companies like Uncipher or KeychainX offer similar services, combining technical expertise and automated tools to help users regain access to their funds. This story reinforces their commercial argument while raising questions about the risks inherent in using AI to process sensitive data.

Perspectives: The future of cryptocurrency recovery

This case highlights several important aspects of cryptocurrency security. First, it reminds us of the crucial importance of regular backups and their secure storage. For any cryptocurrency holder, managing private keys and recovery phrases remains a major challenge. Experts recommend maintaining multiple backup copies in different locations, ideally on media not connected to the internet.

Second, this story raises questions about using AI for wallet recovery. Security experts warn against the risks inherent in loading wallet files into generative AI systems. Sensitive data, such as private keys or recovery phrases, should never be shared with online systems, as it could be stored or processed by third-party servers.

ANSSI, the French national agency for information systems security, renewed its recommendations for caution. It advises cryptocurrency owners to never enter their recovery phrase on web forms and to systematically verify the authenticity of communications from market players. Phishing attempts using fake Trezor or Ledger letters, accompanied by QR codes to steal recovery phrases, remain a persistent problem.

For the future, this story could inspire new approaches in the field of cryptocurrency security. Startups are already exploring AI-based solutions to help users manage their keys more securely, while preserving the confidentiality of their data. The goal is to combine the advantages of artificial intelligence for analysis and management, with the security imperatives that characterize the cryptocurrency ecosystem.

In conclusion, Cprkrn’s story perfectly illustrates the challenges faced by cryptocurrency owners in the long term. Between the need to protect increasingly valuable assets and the difficulty of memorizing complex information, the balance remains delicate to find. Artificial intelligence emerges as a potential tool to facilitate this management, but it must be used with caution and discernment.

Sources

Telemac
Telemachttp://cryptoinfo.ch

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