Protecting Distributed Blockchain with Twin-Field Quantum Key Distribution: A Quantum Resistant Approach

• URL: http://arxiv.org/abs/2603.14826v1
• Date: Mon, 16 Mar 2026 05:07:31 GMT
• Title: Protecting Distributed Blockchain with Twin-Field Quantum Key Distribution: A Quantum Resistant Approach
• Abstract summary: Quantum-secured blockchains relied on quantum key distribution (QKD) to establish secure channels.<n>This paper presents a scalable quantum-resistant blockchain architecture designed to address the connectivity and distance limitations of the QKD integrated quantum networks.
• Score: 7.36431184431416
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum computing provides the feasible multi-layered security challenges to classical blockchain systems. Whereas, quantum-secured blockchains relied on quantum key distribution (QKD) to establish secure channels can address this potential threat. This paper presents a scalable quantum-resistant blockchain architecture designed to address the connectivity and distance limitations of the QKD integrated quantum networks. By leveraging the twin-field (TF) QKD protocol within a measurement-device-independent (MDI) topology, the proposed framework can optimize the infrastructure complexity from quadratic to linear scaling. This architecture effectively integrates information-theoretic security with distributed consensus mechanisms, allowing the system to overcome the fundamental rate-loss limits inherent in traditional point-to-point links. The proposed scheme offers a theoretically sound and feasible solution for deploying large-scale and long-distance consortium.

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