Publications

Journal Articles

[1]

A. Sakurai and K. Shudo, “Model-Based Calculation Method of Mining Fairness in Blockchain ,” IEEE Open Journal of the Computer Society, vol. 7, no. 1, pp. 129–141, Jan. 2026, doi: 10.1109/OJCS.2025.3644694.

[2]

T. Nakai, A. Sakurai, S. Hironaka, and K. Shudo, “A formulation of the trilemma in proof of work blockchain,” IEEE Access, vol. 12, pp. 80559–80578, 2024, doi: 10.1109/ACCESS.2024.3410025.

[3]

A. Sakurai and K. Shudo, “Tie-breaking rule based on partial proof of work in a blockchain,” IEEE Access, vol. 12, pp. 197999–198014, 2024, doi: 10.1109/ACCESS.2024.3521426.

Conference Papers

[1]

T. Nakai, A. Sakurai, and K. Shudo, “The more halving advances, the more rational double spending attack is,” in 2025 IEEE international conference on consumer electronics (ICCE), 2025, pp. 1–6. doi: 10.1109/ICCE63647.2025.10930125.

[2]

S. Masuda, T. Hasegawa, T. Nakai, A. Sakurai, and K. Shudo, “High-bandwidth node selection in compact block relay,” in 2024 IEEE international conferences on internet of things (iThings) and IEEE green computing & communications (GreenCom) and IEEE cyber, physical & social computing (CPSCom) and IEEE smart data (SmartData) and IEEE congress on cybermatics, 2024, pp. 454–458. doi: 10.1109/iThings-GreenCom-CPSCom-SmartData-Cybermatics62450.2024.00088.

[3]

T. Nakai, A. Sakurai, S. Hironaka, and K. Shudo, “The blockchain trilemma described by a formula,” in 2023 IEEE international conference on blockchain (blockchain), 2023, pp. 41–46. doi: 10.1109/Blockchain60715.2023.00016.

[4]

K. Shudo, T. Hasegawa, A. Sakurai, and R. Banno, “Blockchain network studies enabled by SimBlock,” in 2023 IEEE international conference on blockchain and cryptocurrency (ICBC), 2023, pp. 1–2. doi: 10.1109/ICBC56567.2023.10174929.

[5]

A. Sakurai and K. Shudo, “Impact of the hash rate on the theoretical fork rate of blockchain,” in 2023 IEEE international conference on consumer electronics (ICCE), 2023, pp. 1–4. doi: 10.1109/ICCE56470.2023.10043538.

[6]

T. Hasegawa, A. Sakurai, and K. Shudo, “Quick notification of block generation using bloom filter in a blockchain,” in 2023 IEEE symposium on computers and communications (ISCC), 2023, pp. 457–463. doi: 10.1109/ISCC58397.2023.10218308.

[7]

A. Sakurai and K. Shudo, “Accelerating block propagation with sender switchover in a blockchain,” in 2023 IEEE symposium on computers and communications (ISCC), 2023, pp. 1086–1089. doi: 10.1109/ISCC58397.2023.10217880.

Others

[1]

A. Sakurai and K. Shudo, “FiberPool: Leveraging multiple blockchains for decentralized pooled mining.” 2025. Available: https://arxiv.org/abs/2501.15459

[2]

A. Sakurai and K. Shudo, “The rich get richer in bitcoin mining induced by blockchain forks.” 2025. Available: https://arxiv.org/abs/2506.13360

[3]

A. Sakurai and K. Shudo, “Model-based calculation method of mining fairness in blockchain.” 2025. Available: https://arxiv.org/abs/2406.00595

[4]

A. Sakurai and K. Shudo, “A fully local last-generated rule in a blockchain.” 2024. Available: https://arxiv.org/abs/2411.08439