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Bitcoin faces urgent quantum threat risking 6.9M BTC; lacks coordinated upgrade unlike Ethereum

Market News
25 Apr 2026
Coindesk
View Source
Bearish
pluang ai news

Bitcoin's cryptography protecting wallet ownership is vulnerable to future quantum attacks, risking about 6.9 million BTC, including Satoshi Nakamoto's early holdings. Unlike Ethereum, which has a formal, well-funded plan to migrate to quantum-resistant security, Bitcoin lacks a unified strategy due to its decentralized governance culture. While Bitcoin mining and the blockchain ledger remain secure, exposed public keys from early wallets and those spent since the 2021 Taproot upgrade could be exploited by quantum computers. The challenge lies in coordinating a major security upgrade without central authority, with proposals existing but no broad developer consensus yet. The urgency grows as quantum computing advances, highlighting a critical need for Bitcoin to prepare before the threat becomes immediate.

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