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

The threat of quantum attacks on bitcoin has become more pressing after a researcher successfully broke a 15-bit elliptic curve key, a crucial component of the cryptocurrency's security. Quantum security startup Project Eleven awarded a 1 bitcoin prize, worth approximately $78,000, to independent researcher Giancarlo Lelli for his achievement. Lelli's breakthrough, which is 512 times larger than the previous public demonstration, has significant implications for the security of bitcoin and other major blockchains. Elliptic curve cryptography, the math behind crypto wallets, relies on the impossibility of deriving a private key from its public counterpart. However, quantum computers running Shor's algorithm can potentially challenge this assumption. Although Lelli's result does not pose an immediate threat to bitcoin, which uses 256-bit elliptic curve security, it highlights the rapidly advancing capabilities of quantum attacks. The previous public break was a 6-bit demonstration, and Lelli's 15-bit result marks a significant expansion in just seven months. Theoretical estimates suggest that the resource requirements for a full 256-bit attack are decreasing rapidly, with some estimates putting the cost below 500,000 physical qubits. This has significant implications for wallets with public keys already visible on-chain, with approximately 6.9 million bitcoin, or one-third of the total supply, potentially at risk. Bitcoin developers have proposed migration paths, including the addition of quantum-safe address types, to mitigate this threat.