Patent AU-2022312942-A1 (AU)
Title: Blockchain-based green power certification method, apparatus, and system
Inventor: XIE KAI
IPC: H04L9/08
Filed: 2022-08-19
Abstract: 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.  
This resolves problems of an inaccurate certification mechanism of renewable energy, and 
information asymmetry and data opaqueness in attribute certification and consumption 
evaluation processes of the renewable energy.
S101 
Pre-process obtained basic data to obtain structured data and 
unstructured data 
Perform a proof-of-existence operation for the structured data S102 
and the unstructured data on a certification chain to obtain proof
of-existence data, and control the certification chain to 
periodically send the proof-of-existence data to a token chain 
through multi-chain interaction 
Control the certification chain to call a green power certification 
model and the proof-of-existence data to obtain constraints of the 
green power certification model, determine, based on the S103 
constraints and the proof-of-existence data, whether an attribute 
of electric energy generated by a power station is a green power 
attribute, and if the attribute of the electric energy generated by 
the power station is the green power attribute, generate a green 
power attribute certificate by using the certification chain 
Control the token chain to call a consumption evaluation model 
and the proof-of-existence data to determine whether a power S104 
user on a power consumption side performs green power 
consumption, and if the power user on the power consumption 
side performs the green power consumption, generate a green 
power consumption label by using the token chain 
Generate a unique digital identifier for the green power attribute S105 
certificate and the green power consumption label separately 
based on an NFT 
In a green power attribute certification process of the 
certification chain and in a green power consumption 
certification process of the token chain, supervise and verify, by 
using a chain of custody, execution information of each node in S106 
the certification processes of the certification chain and the token 
chain; and store the unique digital identifier in the token chain if 
the execution information passes the supervision and 
verification, or store abnormal associated data in the chain of 
custody if the execution information does not pass the 
supervision and verification 
FIG. 1