Crypto Buzz: “quantum-proof” security returns to the Bitcoin and blockchain debate

A topic that is likely to become increasingly important is returning to crypto technology discussions: making blockchains more resistant to future quantum computers. On September 13, CoinDesk published comments from MIT professor Muriel Médard, co-founder of Optimum, who argued that protecting blockchains does not necessarily require quantum computers themselves. Classical mathematical and cryptographic tools can already contribute to building more robust systems. The quantum-security question is especially relevant to Bitcoin, Ethereum and infrastructure that depends on public-key cryptography. The discussion does not mean that a quantum computer exists today that can suddenly break the leading blockchains. It is mainly about preparation: updating protocols, signatures and procedures before hardware reaches genuinely critical capabilities. Attention has also increased following new research into the theoretical resources required for attacks based on Shor’s algorithm. Estimates can change as science advances, so sensational conclusions should be avoided. For Crypto Mentor, this is a research and technical-community trend, not a forecast of an imminent attack and not a price signal. Post-quantum security is primarily a long-term development topic worth monitoring. Sources: CoinDesk, September 13, 2026, on Muriel Médard and quantum-proof security; CoinDesk, September 10, 2026, on updated research estimates for quantum attacks. Educational content only; not financial advice.