qubit

A new analysis claims the resources required for a quantum computer to break Bitcoin's cryptography have been cut roughly in half, to around 1,151 qubits. The figure renews debate over how soon quantum machines could threaten Bitcoin wallets and the broader crypto industry, and how urgently the network should move to quantum-resistant cryptography.

Researchers have described quantum error-correcting codes that remain effective even when qubits are lost or unexpectedly added to a system, a common problem in real quantum hardware. The work suggests more robust protection for quantum information against fluctuating qubit numbers, a persistent obstacle in building reliable quantum computers.