Verifier

Run an Optimistic Ethereum Verifier and Fraud Prover with minimal configuration. This repository currently supports the Kovan testnet.

Requirements

• Docker
• Docker Compose
• npm - optional

Instructions

The configuration options are in the file docker-compose.env.

The Fraud Prover needs a private key to be able to send a transaction containing the fraud proof. To automatically create a key, run the commands:

$ npm install
$ npm run create-key

This will create a key, print the address and populate the L1_WALLET_KEY variable in docker-compose.env with the key. Fund the address with Kovan ETH. Do not use this address on mainnet. To print the address again, rerun the command $ npm run create-key.

The variables that need to be set are ETH1_HTTP and L1_NODE_WEB_3_URL.

• ETH1_HTTP is the Ethereum RPC server that will be used by the verifier
• L1_NODE_WEB_3_URL is the Ethereum RPC server that will be used by the fraud prover

These must be set to Ethereum nodes that have synced the Kovan testnet.

To start the Verifier and the Fraud Prover, run the command:

$ npm start