IBM and researchers at the University of Chicago said they completed a verifiable quantum computation using 70 logical qubits, a task difficult for classical computers. The team applied a new error-correction approach and finished the calculation in about 15 minutes. The work also offers a way to verify results, a long-standing hurdle in demonstrating quantum advantage. Researchers said the logical error rate fell to about one-tenth of the physical error rate.

Bitcoin posted a 30 percent “quantum discount” for the first time, putting quantum-computing risk at the center of market attention, even as U.S. spot bitcoin ETFs recorded $727 million of net inflows over the past five sessions. Concerns grew after Google Quantum AI assessed faster-than-expected progress on algorithms that could threaten secp256k1. Debate also persists over the BIP-110 upgrade. Altcoins showed recovery signals, while Shiba Inu saw whale accumulation.