"Even if quantum is not ready yet, Bitcoin should prepare now" Bitcoin users should start preparing for the future of quantum computing even though the technology is still in its early stages. According to Adam Back, today’s quantum computers are still mostly “lab experiments” and not powerful enough to break Bitcoin’s security yet. However, the concern is that in the future, advanced quantum machines could potentially crack the cryptography that protects Bitcoin wallets and transactions. That’s why experts suggest starting preparation now, instead of waiting until it becomes an emergency.