hudhaifahz

// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/GSN/Context.sol
// https://ropsten.etherscan.io/address/0x8df55a60a1c98281a60d6c89f59398bee854fbc8#code

pragma solidity ^0.6.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct

hudhaifahz

var ethUtil = require('ethereumjs-util')

var data = 'Hello World!'
var message = new Buffer(data)
var msgHash = ethUtil.hashPersonalMessage(message)
// privateKey = 0xc87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3 
// publicKey = 0x627306090abaB3A6e1400e9345bC60c78a8BEf57
var privateKey = new Buffer('c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3', "hex")
var sig = ethUtil.ecsign(msgHash, privateKey)

hudhaifahz

Git Best Practices

This is a fairly common question, and there isn't a One True Answer, but still, this represents a consensus from #git

Read about git

Knowing where to look is half the battle. I strongly urge everyone to read (and support) the Pro Git book. The other resources are highly