These are very exactly 1 090 decentralized applications that have been deployed on the Ethereum network in just over a year. And this number increases dramatically every day because many applications are currently being developed,So we can understand that the Ethereum network has a bright future ahead of it and that it is appreciated by developers. Indeed, it is necessary to know that this network allows to design applications working alone, that is to say without the participation of an intermediary. Unfortunately, not all of these applications meet the expected success