The emergence of quantum computing poses a significant but controllable threat to Bitcoin and the broader cryptocurrency ecosystem, according to a report by Wall Street broker Bernstein. Recent breakthroughs in quantum technology have accelerated the timeline for potential attacks on modern cryptography, but the firm believes that the risk is still a medium to long-term concern. Analysts at Bernstein, led by Gautam Chhugani, suggest that the rise of quantum computing should be viewed as a system upgrade cycle rather than a risk. Quantum computing, which uses the principles of quantum mechanics, has the potential to break widely used encryption methods, such as elliptic curve encryption, by solving complex problems more efficiently than classical computers.
However, the report notes that the threat is not unique to Bitcoin and spans various industries, including finance and defense. Approximately 1.7 million BTC held in older wallets are at risk, but newer practices and protocols have reduced vulnerability.
Bernstein expects the crypto industry to have sufficient time, around three to five years, to transition to post-quantum cryptography, with upgrades such as new wallet standards and key rotation already under discussion.