IBM Q System One: Either it is going to affect BITCOIN or it isn’t… IBM’s sleek, new, System One is a quantum computer. Will it break BITCOIN or blockchain “The IBM Q System One is currently the only technology that can break the blockchain” and “No, IBM’s Quantum Computer Won’t Break Bitcoin” are nearly opposite claims. At only 20 qubits, Q System One is shiny and new, but what can it do, really? Qubit.