Quantum computing poses a distant risk to Bitcoin

CoinShares and experts agree quantum computing is a distant, manageable risk for Bitcoin. Most coins are secure, with only a small portion theoretically exposed. Current technology is not a threat.

CoinShares and multiple industry reports agree that quantum computing does not currently pose a threat to Bitcoin’s security. While quantum algorithms like Shor’s could theoretically break cryptographic signatures such as ECDSA and Schnorr, today’s quantum hardware is not advanced enough to execute these attacks. Experts and CoinShares emphasize that any practical risk from quantum computing is likely decades away, making this a long-term engineering challenge rather than an immediate concern. Most Bitcoin is stored in modern address formats that keep public keys hidden until funds are spent, significantly reducing exposure. Only about 1.6 million BTC—roughly 8% of the total supply—are held in older P2PK addresses, which are more vulnerable in theory. However, these are mostly small amounts, making large-scale attacks impractical. The consensus is that Bitcoin’s cryptographic defenses remain robust, and the ecosystem has ample time to adapt if quantum threats become more pressing.