James Cheek warns: quantum computing threatens Bitcoin security and requires new solutions

25.11.2025

James Check, founder of analytics platform Checkonchain, has issued a warning about the potential threat that quantum computing poses to the first cryptocurrency - Bitcoin. According to the expert, the development of quantum technologies could radically change the cybersecurity landscape and call into question the reliability of existing cryptographic methods on which the Bitcoin blockchain is based.According to recent research, quantum computers are capable of performing calculations that are millions of times faster than classical ones. This opens up the possibility of breaking traditional encryption algorithms, such as ECDSA, used in Bitcoin to validate transactions. Experts estimate that if quantum computing reaches a sufficient level of power, attackers will be able to gain access to users' private keys, resulting in a loss of funds and undermining trust in the system.Cheek emphasizes the urgent need to implement quantum-resistant cryptographic algorithms. According to the International Telecommunication Union, quantum computers capable of breaking current encryption methods are expected to emerge by 2030. This requires the Bitcoin community and blockchain technology developers to accelerate work on security updates and transition to new standards of data protection.The expert calls for international cooperation and investment in research to ensure the long-term sustainability and security of digital assets in the age of quantum computing.