State Grid Corporation of China

State Grid Digital Technology Holding Co., Ltd.

State Grid Blockchain Technology (beijing) Co., Ltd.

State Grid Xiong'an Financial Technology Group Co., Ltd.

Jiangxi Power Exchange Center Co., Ltd.

Beijing Power Exchange Center Co., Ltd.

Liaoning Power Exchange Center Co., Ltd.

East Inner Mongolia Power Exchange Center Company Ltd.

Guomin Li

Dong Wang

Jiaxing Xuan

Wei Jiang

Lei Zhou

Xin Shi

Da Li

Lihua Zhao

Fan Jia

Zhan Su

Hejian Wang

Yang Wang

Nan Zhang

Liang Zhao

Zhe Zhang

Kai Xie

Xian Wei Zhang

Tong Xing

Chao Yang

Jiangtao Li

Yonghui Liu

Desheng Bai

Hexiao Liang

Tian Sun

Xin Li

Haiqing Jia

Gang Chen

Kun Fan

Qingchun Li

Ping Zhen

Shengzhi Lu

Jingli Feng

Wen Xie

Junwei Ma

Wanli Ma

Dongwei Yang

Shijie Ji

Shengnan Zhang

The present disclosure provides a blockchain-based green power certification method, apparatus, and system, to pre-process obtained basic data to obtain proof-of-existence data, certify the proof-of-existence data from a production side and a consumption side by using a certification chain and a token chain respectively, and obtain a green power attribute certificate and a green power consumption label if the certification is passed; generate a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT), which realizes non-interchangeability, indivisibility, and other characteristics of the certificate and the identifier; and supervise and verify a certification process by using a chain of custody, and generate a corresponding unique blockchain identifier for the certification chain, the token chain, and the chain of custody separately through multi-chain interaction, so as to realize data interaction between blockchains.

Blockchain-based green power certification method, apparatus, and system

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.

Blockchain-based transaction system for green certificate

Provided are a method and device employing a smart contract to realize identity-based key management. The method comprises: running a smart contract, and executing a key management process, wherein the key management process comprises: when a key of a target user requires an update and the target user is not a supervised user, generating a master public key and a master private key pertaining to the target user; acquiring, from a blockchain, identity information of the target user; generating a first target private key according to the master public key and the master private key pertaining to the target user and the identity information of the target user; and replacing a current private key of the target user with the first target private key.

Method and device employing smart contract to realize identity-based key management

Growing community of inventors

Beijing, China

Guomin Li