Researcher Claims 1 Bitcoin Prize for Achieving Largest Quantum Attack on Underlying Technology

The threat of quantum attacks on bitcoin has become more tangible with the latest breakthrough by independent researcher Giancarlo Lelli, who has been awarded 1 bitcoin, valued at approximately $78,000, for breaking a 15-bit elliptic curve key on publicly accessible quantum hardware. This achievement marks a significant milestone, as it demonstrates a 512-fold increase in the scale of the attack compared to the previous public demonstration in September 2025. Elliptic curve cryptography, which is the foundation of bitcoin's security, relies on the principle that deriving a private key from its public counterpart is computationally infeasible. However, the advent of quantum computers running Shor's algorithm has raised concerns about the potential vulnerability of this cryptography. Lelli's achievement, while not posing an immediate threat to bitcoin, highlights the rapid progress being made in quantum attacks and underscores the need for the development of quantum-resistant cryptographic solutions. The bitcoin community has proposed various migration paths, including the implementation of quantum-safe address types, to mitigate the risks associated with quantum attacks.