No, we do not use a system that requires mining. The current structure of major blockchains and its reward systems have proven that nodes are not operated in “good faith” and ultimately major players that own bigger shares of the pie will control the trend. Ethereum’s POS structure and DPOS structures such as Steem and EOS may face bigger issues of concentration of power and wealth due to the fact that decisions are made on the basis of accumulation of stake. If nodes could operate and reach a consensus without the incentivization of wealth, it will have a major benefit.