payment-channel

Payment channel CLI tool

Little CLI tool written a golang to show how payment channels work for the ethinitium blockchain course

Instructions of use

1. Run ganache on port 7545
2. Copy and paste the mnemonic and run payment-channel init "<ADD MNEMONIC HERE>"

Further information

This tool was created to show a payment channel between two fictional characters, Bob and Alice.

To close this payment channel, both users need to sign a valid hashed message that includes

1. The contract address
2. The value
3. A nonce

Simply put, we do keccack256(contractAddress, value, nonce) and that will be the message that we sign with a private key.

To challenge this channel, only 1 signature from the opponent is needed, with a higher nonce than the one used when closing the channel.

Basic flow of the application:

init -> deploy -> open -> sign -> close -> challenge (maybe) -> timewarp -> finalize