Project Eleven warns quantum computers could crack Bitcoin and Ethereum keys by 2030, urges migration

A new analysis from Project Eleven estimates that Q‑Day, the point at which quantum hardware could break elliptic‑curve signatures used by Bitcoin and other blockchains, might come as soon as 2030 and could put millions of bitcoins at risk if unmitigated ^{[1] [2]}.

The warning builds on recent demonstrations and academic work showing rapid advances in quantum attacks against elliptic‑curve cryptography, and Project Eleven’s leadership says migration to post‑quantum signature schemes will be more complex than past upgrades such as Taproot and should move from research into production now ^{[1] [3]}.

Industry observers note the risk could materialize suddenly after a period of limited visible progress, meaning networks that wait for certainty about quantum‑hardware timelines may be too late; groups in crypto are already discussing migration planning in response to the analysis ^{[2] [4]}.

Project Eleven and multiple outlets urge that coordinated planning for post‑quantum upgrades begin now to reduce the window of exposure once quantum attacks become practical ^{[3] [1]}.