China launches mass production of silicon-28: a breakthrough for quantum computing and cryptography

China National Nuclear Corporation has announced the start of mass production of silicon-28 with isotopic purity exceeding 99.99%. This event is positioned as the first case in the country's history of independent large-scale production of this material. For the crypto industry and blockchain sector, this is a signal that cannot be ignored.
Why silicon-28 is important for the future of cryptography
Silicon-28 is an isotope critically important for creating silicon quantum computers. Its unique property is the reduction of magnetic interference, which directly increases the stability of qubits. In the context of digital assets, this means a potential breakthrough in the field of post-quantum cryptography. If China can scale the production of such high-purity material, it will accelerate the development of quantum systems capable of cracking modern encryption algorithms, including ECDSA and SHA-256, which underpin Bitcoin and Ethereum.
With isotopic purity above 99.99%, a minimal level of defects in the crystal lattice is achieved, allowing qubits to maintain coherence longer. This is a direct step toward creating fault-tolerant quantum processors. For miners and cryptocurrency holders, this means the race for quantum resilience is becoming not a theoretical but a practical challenge.
My analysis: geopolitical context
As an analyst, I see this step not just as a technological achievement but as a strategic maneuver. China, despite its strict ban on crypto trading and mining, continues to invest in fundamental technologies that could overturn the entire blockchain architecture. Control over the production of silicon-28 gives Beijing leverage over the future of quantum computing—and therefore over the security of global crypto networks. The market should prepare for the fact that within the next 5–7 years, the quantum threat will become a reality, and projects that do not implement post-quantum algorithms will be at risk.