⚡️QUANTUM COMPUTER BREAKS ECC KEY IN BITCOIN-RELATED TEST A researcher used public quantum hardware to break a 15-bit elliptic curve key, winning Project Eleven’s 1 BTC Q-Day Prize. The test does not threaten Bitcoin’s 256-bit security yet, but highlights growing urgency around post-quantum upgrades, with ~6.9M BTC sitting in addresses with exposed public keys.(Coin Bureau)