Attacking bitcoin mining with a quantum computer would require the energy of a star, academics say

Attacking bitcoin mining with a quantum computer would require the energy of a star, academics say

Search/NewsVideoPricesResearchConsensus 2026Data & IndicesSponsoredSearch/enTechShareShare this articleCopy linkX iconX (Twitter)LinkedInFacebookEmailAttacking bitcoin mining with a quantum computer would require the energy of a star, academics sayOne paper finds that attacking the bitcoin blockchain through quantum mining would demand the energy output of a star. Another replicates every major "quantum factoring breakthrough" using a 1981 home computer and a dog.By Sam ReynoldsUpdated Apr 8, 2026, 5:45 a.m. Published Apr 8, 2026, 5:42 a.m. Make preferred on What to know: Quantum computers pose a genuine long-term risk to bitcoin, but current fears often conflate wallet vulnerabilities with largely impractical threats to mining.New research finds that a quantum 51% attack on bitcoin mining would require star-level energy and hardware on a scale that is physically unreachable.The more rea

Source: https://www.coindesk.com/tech/2026/04/08/attacking-bitcoin-mining-with-a-quantum-computer-would-require-the-energy-of-a-star-academics-say