Digital-Ticket-Controlled Digital Ticket Circulation. - Ko Fujimura; Hiroshi Kuno; Masayuki Terada; Kazuo Matsuyama; Yasunao Mizuno; Jun Sekine (USENIX Security Symposium, 1999)

Copy Prevention Scheme for Rights Trading Infrastructure. - Masayuki Terada; Hiroshi Kuno; Masayuki Hanadate; Ko Fujimura (CARDIS, 2000)

Photrace: A Blockchain-Based Traceability System for Photographs on the Internet. - Tatsuya Igarashi; Takabayashi Kazuhiko; Yoshiyuki Kobayashi; Hiroshi Kuno; Eric Diehl (Blockchain, 2021)