Anyone can buy our tokens with ETH during the Qravity pre-sale/token sale. After the sale campaigns, QCO will be available on third-party exchanges, where you can buy it with fiat or other cryptocurrencies.
And is it ok, if i use hard wallet?
In order to contribute, you shall create an account(wallet) in which you can send your Ethereum from. You can use either hardware wallet, Ethereum desktop wallet or an Ethereum web wallet.