Alphabet Inc Class CGoogle Quantum AI's March 2026 circuit value is used as the comparison baseline that Eigen Labs claims to beat by over 50%, but the paper explicitly disclaims superiority.

US blockchain company Eigen Labs published research on the paper preprint site arXiv on September 10 showing that the amount of computation needed to break ECDSA, the cryptographic scheme used by Bitcoin and Ethereum, with a quantum computer is less than previously assumed. The research team optimized the "point addition" operation, which is unavoidable in cryptographic cracking calculations, so that it can be executed with 1,151 logical qubits, the basic unit close to a quantum computer's working memory, and also held the number of "Toffoli gate" operations, among the heaviest computational loads, to about 1.3 million. The resource metric combining qubit count and operation count came in more than 50% lower than the circuit value presented in March 2026 by Google Quantum AI, Google's quantum computing division, but the two differ in calculation methods and conditions, and the paper states that it "does not prove superiority or inferiority and is limited to a numerical comparison." More than 100 humans and AI agents took part in this research starting in May 2026, and in June the verification mechanism and scoreboard were made public so that anyone could submit improvement proposals. However, no quantum computer exists that can actually run this circuit, and the number of logical qubits IBM aims for by 2029 is said to be only 200.
Alphabet Inc Class CGoogle Quantum AI's March 2026 circuit value is used as the comparison baseline that Eigen Labs claims to beat by over 50%, but the paper explicitly disclaims superiority.
International Business MachinesEigen Labs published the arXiv research achieving a quantum circuit resource metric more than 50% lower than Google's prior value.