Settlement system, settlement method, user device, and settlement program

US11893583B2 · kind B2 · utility

Assignee

• NIPPON TELEGRAPH AND TELEPHONE CORPORATION · JP

Inventors

• Shigenori Ohashi · Yokosuka, JP
• Atsushi Nakadaira · Yokosuka, JP
• Shigeru Fujimura
• Masayoshi CHIKADA · Yokosuka, JP
• Tatsuro ISHIDA · Yokosuka, JP
• Hiroki Watanabe · Nagaokakyo, JP
• Kota HIDAKA · Musashino, JP
• Junichi Kishigami · Muroran, JP

Key dates

• Filing date: Sep 20, 2019
• Grant date: Feb 6, 2024
• Expiry date: Feb 9, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2209/56
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A settlement system includes a service provider device 2 which transmits a template information transaction including a template of a transaction to a network 4 of a first blockchain, a user device which transmits, to the network 4 of the first blockchain, a payment information transaction that includes an electronic signature generated by using the template of the transaction and a payment amount, and a smart contract 41, wherein the smart contract 41 verifies the electronic signature by using the payment amount and the template of the transaction, the service provider device 2 generates a settlement transaction by using the template of the transaction, the electronic signature and the payment amount, and transmits the settlement transaction to a network 3 of a second blockchain, a plurality of output conditions are set to the template of the transaction, and the settlement transaction becomes usable when any one of the plurality of output conditions is satisfied.