EXPERIMENTAL MODEL OF BLOCKCHAIN CONSENSUS INTEGRATING THE QUANTUM COMPUTING PARADIGM

Abstract

This study proposes an experimental model of blockchain consensus that integrates the quantum computing paradigm with classical digital signature mechanisms. In the model, validators employ a commit–reveal scheme using ECDSA or RSA digital signatures, and the decision-making process is modeled in the presence of Byzantine-behaving nodes. The final consensus decision is based on a quantum voting primitive implemented using a GHZ-type entangled state through the Qiskit simulator. In addition, a per-qubit calibration and probability mitigation method is applied to reduce measurement errors. The research results are visualized through the quantum confirmation share per block, the distribution of votes from honest and Byzantine validators, and histograms of raw and mitigated probabilities. The obtained results allow the evaluation of the stability of quantum-based consensus mechanisms and their resilience to Byzantine faults.