The notion that quantum computers could compromise bitcoin's security has been a topic of concern in recent times. However, a recent study suggests that the energy required to launch such an attack would be equivalent to that of a small star.
This is due to the immense computational power needed to break bitcoin's encryption. Furthermore, another study has shown that many claimed quantum factoring breakthroughs are overstated, with some researchers using simplified problems or cheating by using pre-computed solutions.
The real threat to bitcoin lies in the potential vulnerability of wallets, particularly those with exposed key information. While the threat of quantum computing is real, it is still largely theoretical, and significant technical advancements are needed before it becomes a practical reality. Developers are already working on solutions to mitigate this risk, including reducing key exposure and developing new types of signatures that can withstand quantum attacks.