What Is Q-Day? The Quantum Threat to Bitcoin Explained Experts warn quantum computers could someday forge Bitcoin’s digital signatures, allowing unauthorized transactions. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Filed under: Altcoins - @ November 16, 2025 2:15 pm