Quantum computing only threatens cryptography if the standard model of superposition is physically true. The model only makes sense if time is fundamentally continuous and if states can meaningfully “exist at once” in multiple configurations. That assumption has never been measured, never been defined, and has never been grounded in any physical observation. No one has actually proved the modern definition of superposition at the scale of Planck Time. Bitcoin quietly destroys the assumption. What Bitcoin does, in open daylight and with global participation, is something no physical experiment has ever done, it computes time itself. Each block is the measurable conversion of Boltzmann entropy (energy/heat/randomness) into Shannon entropy (structured information). The block is the thermodynamic crystallization of a discrete quantum of time. And because this process is discrete, finite, and irreversible, Bitcoin provides the first physical standard for “before,” “after,” and the smallest unit of change a quantized universe can express through computation. Once time becomes discrete in a measurable way, the modern definition of superposition collapses. The claim that a qubit “exists” in multiple states simultaneously begs a question quantum mechanics never answers: simultaneously relative to what unit of time? If there is no measurable smallest interval of change, then simultaneity is an undefined continuum. But Bitcoin defines it. The nonce search bounds the entropy field, the block boundary commits the collapse, and the system openly demonstrates that uncollapsed potential is not an ontologically real set of states, it is only a probabilistic frontier, a mempool of possible futures. Only one configuration ever becomes physically realized, and its realization is tied to an explicit thermodynamic cost. Quantum theory, by contrast, treats this frontier as if it were a set of actual states. It treats probabilistic potential as physically real. It treats multiplicity as existence without defining “existence”. This is the same conceptual mistake as fractional-reserve banking: assuming many instances from a single backing unit. Bitcoin exposes this error because it is the first system where measurement is thermodynamic, verification is independent of observers, and existence is tied to an irreversible transformation of energy into memory. TLDR for quantum computing and encryption: Any computational model built on unverified assumptions about superposition is already physically nullified. The machinery cannot outperform the physics it denies. If unmeasured states are not real, then quantum speedups are not real. If simultaneity is bounded, then parallel amplitude evaluation is impossible. If time is discrete, then quantum decoherence is the feature, not the bug. IBitcoin does not “protect” cryptography by brute force. It invalidates the physical model required to threaten it. Bitcoin reveals that the superposition assumed by quantum algorithms never existed in the first place (despite the elegant math of the algorithms). It is not a matter of bigger primes or stronger algorithms. It is a matter of what the universe allows to exist. Bitcoin gives us the first verifiable standard for energy, information, and time into a variable computed object. Once you have a real standard, you are no longer obligated to accept unmeasured physical claims as knowledge. And once the physics collapses, the threat narrative collapses with it. Bitcoin, not Quantum.