Decentralized payment system using vyper

Payment channel enables stream of payments between 2 parties.

sender exchanges signatures offchain and receiver only needs to submitt a single transaction to finalize the payments.

sign a transaction message using msgHash( _amount ) and MetaMask :

1. deploy the contract and get the hash of your message with function below :

msgHash(_amount)

open browser console and then :

2. assign MsgHash with the value of msgHash(_amount)

    MsgHash =  

3. enable metamask:

    ethereum.enable()  

4. get connected account of your metamask :

ethereum.request({ method: 'eth_requestAccounts' }).then(function (accounts) {  
    CurrentAccount = accounts[0];  
    console.log('current account: ' + CurrentAccount); 
}); 

5. send a request to sign the message with metamask :

    ethereum.request({method : "personal_sign" , params : [CurrentAccount, MsgHash]})