Bitcoin Faces Quantum Threat with 6.9 Million BTC at Risk
- Approximately 6.9 million bitcoin, or one-third of all mined, is vulnerable due to exposed public keys.
- Satoshi Nakamoto’s holdings of roughly 1 million bitcoin are included in the at-risk category.
- The Taproot upgrade in Bitcoin has inadvertently increased exposure by publishing keys for spent transactions.
- In contrast, Ethereum has a formal quantum-resistant program since 2018, with multiple teams actively working on upgrades.
- Proposals like BIP-360 aim to create quantum-safe address types but lack broad support from Bitcoin’s core developers.
A significant portion of Bitcoin’s supply is at risk from potential quantum attacks, particularly due to vulnerabilities in wallet security that could expose private keys. Meanwhile, Ethereum’s proactive measures highlight the urgent need for Bitcoin to develop a comprehensive strategy against this emerging threat.
With about 6.9 million BTC potentially vulnerable, the pressure mounts on Bitcoin developers to respond effectively before quantum computing capabilities advance significantly.(Source)
