Blockchain-based transaction system for green certificate

US12277549B2 · kind B2 · utility

Assignees

• STATE GRID BLOCKCHAIN TECHNOLOGY (BEIJING) CO., LTD. · CN
• State Grid Digital Technology Holding CO., LTD. · CN
• State Grid Corporation of China · CN

Inventors

• Dong Wang · Beijing, CN
• Wei Jiang · Kunming, CN
• Da Li · Beijing, CN
• Jiaxing Xuan · Beijing, CN
• Guomin Li · Beijing, CN
• Hejian Wang · Beijing, CN
• Xin Shi · Nanhu, CN
• Jiangtao Li · Beaverton, US
• Zhan Su · Nanjing, CN
• Lei Zhou · Tianjin, CN
• Lihua Zhao · Palo Alto, US
• Fan Jia · Nanhu, CN

Key dates

• Filing date: Jan 21, 2022
• Grant date: Apr 15, 2025
• Expiry date: Apr 12, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06Q2220/00
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A blockchain-based transaction system for a green certificate includes an audit node, a proxy node, and an off-chain node. The proxy node is used by a power producer and a purchaser; the audit node verifies qualification information of the power producer, and send a green certificate to the power producer; the off-chain node predicts a transaction price of a next transaction; when receiving sale information of the power producer and purchase information of the purchaser, the proxy node sends the sale information, a digital signature of the power producer, the purchase information, and a digital signature of the purchaser to the off-chain node; the off-chain node matches the sale information and the purchase information, and sends successfully matched transaction information to the proxy node; the proxy node sends the successfully matched transaction information to a transaction smart contract; and the transaction smart contract performs transaction processing.