Proof-of-concept for running "Kontaktdatenblatt" used for market communication in German energy industry on an Ethereum blockchain. The primary goal was to proof end-to-end verification of "Marktpartner" identities regarding their organisation names is possible purely on-chain using an on-chain verification algorithm (currently ECDSA with SHA256 supported) and existing certificates (SM-PKI EMT).

This work is inspired by discussions in BCI-E+, in particular the idea of leveraging existing SM-PKI EMT certificates for this use case.

The following instructions assume an execution on localhost. However, feel free to execute the code on any Ethereum-based blockchain (with a gas limit of at least 25 Mio.).

1. Install Ganache. Important: A gas limit of at least 25 Mio. is required. We recommend to set it to 30 Mio. Open Ganache => Settings => Chain

2. Install Metamask in your browser. Once installed, import one of the prefuned accounts and connect Metamask to your Ganache private chain (default: http://localhost:7545)

3. Git clone the repo to your local machine via git clone --recurse-submodules [email protected]:BlockInfinity/kontaktdatenblattOnBlockchain.git

4. Use Remix (or any other client) to deploy ./contracts/Register.sol (and all imported contracts) to your Ganache chain. Important note: Register.sol's constructor requires 2 parameters. Use the following values for them.

• pk_x = 0x686A332A465F38F17CC6541CB939CE1237CF8C2EFC1A28D8DD93191CCDD760BC
• pk_y = 0x48CEC4C40D2C0EBB7F1626C77FC8BD8573948600658BF6B8DFFBB2559A5EA8B7

5. cd ./webapp && npm install

6. Configure contract address of the previously deployed contract (4) in /webapp/src/api/blockchainApi.js at variable "registerContractAddress".

7. Start the app via npm run start-dev

Hint: In ./misc you find the official PKI EMT certificate of "50Hertz Transmission GmbH" you may use for verification testing (downloaded here). However, any ECDSA (with SHA256) based signature should work.