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 recent achievement of independent researcher Giancarlo Lelli. Lelli was awarded 1 bitcoin, worth approximately $78,000, by quantum security startup Project Eleven for breaking a 15-bit elliptic curve key on publicly accessible quantum hardware. This feat is considered the largest public demonstration of its kind and has significant implications for the security of bitcoin and other major blockchains. Elliptic curve cryptography is a crucial component of cryptocurrency wallets, enabling them to prove ownership of funds without revealing private keys. However, quantum computers can potentially compromise this security using Shor's algorithm. Lelli's achievement does not pose an immediate threat to bitcoin, as it uses 256-bit elliptic curve security, but it does demonstrate the rapid progress being made in quantum attacks. The previous public break was a 6-bit demonstration, and Lelli's result represents a 512-fold increase in just seven months. Theoretical estimates suggest that the resource requirements for a full 256-bit attack are decreasing rapidly, with some predictions 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 at risk. To address this concern, bitcoin developers have proposed migration paths, including the addition of quantum-safe address types. The achievement highlights the need for the cryptocurrency community to prioritize quantum-resistant security measures to protect against potential threats.