Project Eleven, a quantum computing research organization, has announced the launch of the Q-Day Prize, a global challenge offering 1 BTC to the first team able to break an elliptic curve cryptographic (ECC) key using Shor’s algorithm on a quantum computer. The first team to successfully achieve this breakthrough before September 25, 2025, will be awarded 1 BTC.

The challenge directly targets the Elliptic Curve Digital Signature Algorithm (ECDSA), which underpins bitcoin’s security model. While theoretical discussions about quantum threats have persisted for years, Project Eleven seeks to turn speculation into measurable risk by encouraging practical demonstrations of cryptographic…

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