Independent researcher Giancarlo Lelli has successfully cracked a 15-digit elliptic curve cryptography (ECC) key using public quantum hardware, earning a 1 BTC reward from Project Eleven. This achievement marks the largest public demonstration of a quantum attack to date. Industry experts estimate that fully breaking a 256-bit ECC key now requires approximately 500,000 physical qubits. This development raises concerns for about 6.9 million Bitcoin with exposed public keys, accelerating efforts for quantum-resistant migration solutions like BIP-360.