About 1.92 million Bitcoin are structurally unsafe
Bitcoin’s cryptography is under threat from quantum computers. A researcher used a quantum computer to break a 15-bit elliptic-curve key, sparking concerns about the security of Bitcoin’s 256-bit keys.
The majority of Bitcoin, about 13.99 million, remains unexposed to quantum computing threats. However, about 1.92 million Bitcoin are considered structurally unsafe, while another 4.12 million are operationally unsafe due to key management practices.
This vulnerability poses a significant risk to the security of the Bitcoin network. As quantum computing technology advances, the risk of a quantum attack on Bitcoin’s cryptography increases.