Short Paper: Secure Offline Payments in Bitcoin. - Taisei Takahashi; Akira Otsuka (Financial Cryptography Workshops, 2019)

Probabilistic micropayments with transferability. - Taisei Takahashi; Akira Otsuka (IACR Cryptol. ePrint Arch., 2021)

Multi Pair Swap-Based Weather Derivative DeFi. - Shinya Haga; Taisei Takahashi; Kazumasa Omote (QRS Companion, 2022)

VeloCash: Anonymous Decentralized Probabilistic Micropayments With Transferability. - Taisei Takahashi; Taishi Higuchi; Akira Otsuka (IEEE Access, 2022)

Emergency Medical Access Control System Based on Public Blockchain. - Taisei Takahashi; Yan Zhihao; Kazumasa Omote (J. Medical Syst., 2024)