I am creating a game where users will be rewarded with some Ether once they complete a challenge. Before we can reward users , we will have to purchase some Ether from currency exchange like Kraken(Don't want to mine it). Once we purchase it, we want to keep it in our wallet(base account) and then transfer to different Ether accounts/wallets provided by users.
Do I need a blockchain for such scenario ? I think we can just use MyEtherWallet Api for transfer Ether to multiple users without needing to setup a blockchain ?