The emergence of quantum computing has significant implications for Bitcoin and the broader cryptocurrency ecosystem, according to a report by Wall Street broker Bernstein. The firm acknowledges that recent advancements in quantum computing have accelerated the timeline for potential risks to crypto, but argues that these risks are manageable. Bernstein notes that while quantum computing could potentially weaken cryptographic systems, the threat is not unique to Bitcoin and should be viewed as a long-term, industry-wide risk. The report highlights that the majority of exposure is concentrated in older, legacy wallets, with around 1.7 million BTC at risk.
However, newer practices and protocols are being developed to reduce vulnerability, and Bitcoin mining remains secure even in advanced quantum scenarios. The broker expects the crypto industry to have sufficient time, approximately three to five years, to transition to post-quantum cryptography, with upgrades such as new wallet standards and key rotation already being discussed. Furthermore, a recent academic paper suggests that attacking the Bitcoin blockchain through quantum mining would require an enormous amount of energy, equivalent to that of a star.