Researcher wins 1 bitcoin bounty for 'largest quantum attack' on underlying tech

Researcher wins 1 bitcoin bounty for 'largest quantum attack' on underlying tech

Search/NewsVideoPricesResearchConsensus 2026Data & IndicesSponsoredSearch/enTechShareShare this articleCopy linkX iconX (Twitter)LinkedInFacebookEmailResearcher wins 1 bitcoin bounty for 'largest quantum attack' on underlying techIndependent researcher Giancarlo Lelli broke a 15-bit elliptic curve key on publicly accessible quantum hardware, 512 times larger than the previous public demonstration in September 2025.By Shaurya Malwa|Edited by Sheldon RebackUpdated Apr 24, 2026, 3:29 p.m. Published Apr 24, 2026, 3:14 p.m. Make preferred on What to know: An independent researcher used publicly accessible quantum hardware to break a 15-bit elliptic curve key, winning Project Eleven’s one bitcoin Q-Day Prize in the largest public demonstration yet of a quantum attack relevant to cryptocurrencies.While the feat is far from threatening bitcoin’s 256-bit elliptic curve security, it shows that pra

Source: https://www.coindesk.com/tech/2026/04/24/researcher-wins-1-bitcoin-bounty-for-largest-quantum-attack-on-underlying-tech