Quantum Computers Pose Existential Threat to Bitcoin

The development of quantum computers poses an existential threat to Bitcoin's existence if a viable device is manufactured. Quantum computing functions in a fundamentally different way from classical computers, making it much more efficient at specific types of computations.

Classical computers store information as discrete states, represented by 1s and 0s. When generating a private key, the computer acquires random values and stores them as 1s and 0s in memory. To guess someone else's private key, a computer would have to try every possible key one by one, which is an impossible task.

Quantum computers, on the other hand, don't store discrete states until they are observed. They use qubits, which can be both 1 and 0 at the same time, and entanglement, where atoms representing qubits collapse to the same state when observed. Quantum algorithms operate on these entangled qubits by altering the probabilities of different outcomes.

A quantum computer could potentially break the assumptions underlying elliptic curve cryptography, which secures all Bitcoiners' individual bitcoin. However, researchers understand the problem and are working on possible solutions to mitigate the risk.