Abstract
Quantum blockchain (QBC) is a novel decentralised concept anticipated to offer an alternative to the classical blockchain to provide transaction security and transparency. The QBC frameworks can offer the most tangible advantage against the security threat posed by quantum computers on the classical blockchain. The proposed scheme offers a new QBC framework in which voting is performed by the Quantum-Secured Yet Another Consensus (QSYAC) algorithm to create a fast decentralised QBC. QSYAC algorithm is also used to ensure the reliability and fault tolerance of the blockchain framework. The classical information and the chaining are provided using a single qubit state and quantum entanglement. The transactions are signed via a cyclic permutation of the computational distinguishability of the quantum states problem, and quantum key distribution protocol is used for secure key sharing. Assuring the security of the key and the blockchain, the suggested model is more effective and safe from potential quantum assaults than earlier systems.
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Mandeep Kumar created all of the tables and drafted the paper, and all the figures have been generated by Bhaskar Mondal. Both authors worked together on simulations, literature reviews, and proofreading.
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Kumar, M., Mondal, B. Quantum blockchain architecture using cyclic QSCD and QKD. Quantum Inf Process 23, 101 (2024). https://doi.org/10.1007/s11128-024-04316-x
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DOI: https://doi.org/10.1007/s11128-024-04316-x