Quantum computing presents a looming challenge for Bitcoin's security architecture. The primary concern revolves around two vectors: adversaries could theoretically exploit Shor's algorithm to compromise ECDSA private keys, and accelerated computational capacity might enable attackers to orchestrate 51% network attacks more feasibly. However, experts largely agree the immediate threat level remains low—current quantum hardware hasn't matured to that capability, with realistic attack timelines potentially spanning decades rather than years. The crypto industry isn't sitting idle either. Development of post-quantum cryptographic standards is already underway, positioning blockchain ecosystems to migrate toward quantum-resistant encryption protocols before any genuine threat materializes. For Bitcoin holders and developers, this represents a technical horizon worth monitoring rather than an urgent crisis.