The Issuer package contains smart contracts and interfaces that handle the management of Energy Attribute Certificates on the blockchain.
It is a component of Energy Web Origin's Traceability SDK.
See contributing.md
EW-Origin is a component of the Energy Web Decentralized Operating System (EW-DOS).
The purpose of EW-DOS is to develop and deploy an open and decentralized digital operating system for the energy sector in support of a low-carbon, customer-centric energy future.
We develop blockchain technology, full-stack applications and middleware packages that facilitate participation of Distributed Energy Resources on the grid and create open market places for transparent and efficient renewable energy trading.
- To learn about more about the EW-DOS tech stack, see our documentation
For a deep-dive into the motivation and methodology behind our technical solutions, read our White Papers:
This project is licensed under the MIT License - see the LICENSE file for details
prevCommitment is required to prevent state corruption, transition to new commitment based on other state that's currently on-chain will result in error.
Implementation:
- Certificate owner A has 1000kWh of energy on certificate id = 1 (C1)
- A requesting private transfer of 500kWh from C1 to B
- A calls API with (id, value, newOwner) in our case (1, 500000, B)
- if API approves the transfer (enough balance, maybe other API checks)
- API returns (updatedBalanceOfA, salt) in our case (500000, 'randomsalt')
- A creates onChain request where hash = hash(address, updatedBalanceOfA, salt) in our case hash(A, 5000000, salt)
- Issuer - approves by sending new commitment that is verified against the request.hash