Bitcoin trading is proving to be quite beneficial for those who regularly use e-commerce. To pay online you must fill out all confidential information such as card number, expiration date ... to the web. That's why so many credit cards have been stolen recently. Meanwhile, Bitcoin trading does not require you to write any confidential information. You only need two types of keys that are the public key and the secret key. Anyone can see your public key but the secret key is only known by the owner