We not use blockchain. We use smart contracts
Truly confusing, it is. According to https://bitcoinexchangeguide.com/zonex-ico/ :"ZoneX is a blockchain network that will provide an opportunity for anyone to create a cyber-athlete career and earn from playing their favorite games or even join a professional eSports team. The venture intends to organize and hold tournaments that will help bring together the eSports community and consequently create a social network........... Coaches- are in charge of the professional teams and can negotiate the buying and selling of his team players through the use of smart contracts."
I hope this defines the blockchain and the smart contract in ZONEX project that might clarify a confusing statement.