Glassnode Warns Nearly 30% Of Bitcoin Supply Could Face Future Quantum Risks

Glassnode analysis reveals that approximately 30% of Bitcoin's supply (6.04 million BTC) could face theoretical quantum computing risks in the future, with 4.12 million BTC at heightened risk due to address reuse and outdated custody practices. Simultaneously, Bitcoin spot trading volumes have collapsed 81% since October 2025, falling to levels comparable with the 2023 bear market, though analysts suggest this could signal the exhaustion of selling pressure.

The quantum computing threat to Bitcoin represents a critical long-term security consideration that deserves serious attention from network developers and custodians. Glassnode's findings indicate that nearly 30% of circulating BTC is theoretically vulnerable because public keys have already been exposed on-chain—a necessity for transactions but a potential liability if quantum computing advances accelerate beyond current expectations. The most concerning aspect is that 4.12 million BTC face unnecessary risk through address reuse and outdated custody methods, suggesting these vulnerabilities are not inevitable but rather the result of suboptimal practices that could be remediated through migration to quantum-resistant protocols.

The concurrent collapse in Bitcoin trading volumes adds important context to market sentiment. With an 81% decline in spot trading activity since October 2025, major exchanges like Binance, Gate.io, and Bybit are experiencing historically weak participation levels. This contraction mirrors conditions from July 2023, during the depths of the previous bear market, driven by macroeconomic headwinds including persistent inflation and US-Iran tensions that have redirected capital toward commodities and traditional equities.

However, market analysts interpret this volume collapse as potentially constructive rather than bearish. Historical precedent suggests that prolonged periods of weak spot volume frequently precede the terminal stages of market corrections, when selling pressure exhausts itself and speculative excess leaves the system. The 2023 bear market exhibited similar trading volume collapse before volatility resumed and bullish momentum returned, establishing a pattern worth monitoring as the current cycle evolves.

• →Approximately 6.04 million BTC (30% of supply) faces theoretical quantum computing vulnerability due to exposed public keys on-chain.
• →4.12 million BTC at highest risk due to preventable factors like address reuse and outdated custody methods that could be addressed through protocol upgrades.
• →Bitcoin spot trading volumes have collapsed 81% since October 2025, reaching bear market-level participation comparable to July 2023.
• →Major exchanges including Binance, Gate.io, and Bybit all experienced significant volume declines, indicating market-wide weakness.
• →Weak spot volume historically coincides with late-stage market corrections, potentially signaling selling pressure exhaustion rather than continued decline.