To generate the codes, execute `node server/codegen.js`. This comand will output a `codes.txt` file, and the proof and merkle root used for the contract
### Background service
A nodejs service was created to receive funding requests. It requires a geth light node to run
0.`chmod 600 server/config.js`
1. Edit `server/config.js` and set the contract address and the private key of the controller address.