A confession has emerged that even a well-known developer who believes in bitcoin's long-term potential was unable to buy more BTC because of anxiety about storing assets. Some point to “self-custody,” considered a core value of cryptocurrencies, as instead acting as a barrier to entry for some investors.

On Aug. 6, blockchain outlet U.Today reported that Rene Pickhardt (르네 픽하르트), a German bitcoin researcher and Lightning Network developer, cited private key management and security issues as reasons he had not accumulated enough bitcoin. He posted the comments on X, formerly Twitter.

Pickhardt said, “Despite the potential benefits, I never bought a lot of bitcoin because security and key management always made me anxious.” He added that revealing this reason was “too embarrassing.” His remarks are drawing attention not only as a personal experience of missing an investment opportunity but also because they suggest that even insiders in the bitcoin ecosystem feel a heavy practical burden from self-custody.

Bitcoin's biggest feature is that users can control their assets directly without a central institution. But users must also bear responsibility because there is no way to recover assets if a private key is lost or stolen.

Pickhardt pointed out that even a perfectly generated private key cannot be completely safe from risks in the storage process, software vulnerabilities and future technological changes. It means every step, not only generating a key but also storing and using it, is connected to security issues.

These concerns resurfaced after a recent security incident involving a hardware wallet. Attackers are believed to have exploited a vulnerability in some versions of the popular Coldcard hardware wallet to carry out large-scale bitcoin theft.

Security researchers analyzed the issue as being related to the random number generation method used in creating wallet seed phrases. They said that under certain conditions, predictable values were included in the entropy generation process, creating the possibility that an attacker could reconstruct wallet keys. About 1,755 BTC was stolen, and the loss was estimated at more than $100 million. One victim claimed to have lost about $1.6 million worth of bitcoin despite keeping the hardware wallet in a safe, showing that offline storage alone can make it difficult to ensure sufficient security.

After the incident, debate in the bitcoin community has resumed over the benefits of self-custody and its real-world risks. Some users expressed sympathy with Pickhardt's concerns and said cryptocurrency security systems remain difficult for ordinary investors.

By contrast, Blockstream Chief Executive Adam Back (아담 백) stressed the responsibility that comes with self-custody. He expressed the view that the strong power of bearer money comes with a heavy responsibility not to lose keys.

Security management is emerging as an element as important as price outlook in bitcoin investing. Even if investors expect high returns, the burden of private key management, wallet security and backup methods can become a factor that makes them hesitate to invest.

Pickhardt's case again shows that the tasks the bitcoin ecosystem must solve go beyond simple price gains or institutional adoption. It suggests the challenge is to build a user experience and security system that lets anyone manage assets safely.