Yoo, E. et al. 2026. A Metadata Schema Design for Global e-Apostille Processing and a Consortium Blockchain-based Certificate and Verifica-tion Framework for e-Register Service. International Journal of Engineering and Technology. 8, 1.4 (Feb. 2026), 606–615. DOI:https://doi.org/10.14419/ijet.v8i1.4.26317.