Kushnerov, O., Prosolov, V., Dudykevych, V., Yevseiev, S., Povaliaiev, S., Ivanchenko, Y., Gorbulyk, V., Chechui, O., Balagura, D., & Sukhoteplyi, V. (2026). Development of a method for improving the efficiency of transaction classification in the Bitcoin network using an attention mechanism in graph neural networks. Eastern-European Journal of Enterprise Technologies, 1(9 (139), 6–18. https://doi.org/10.15587/1729-4061.2026.351685