Hi dev. How can be ROI 5000% in a year? Or is not calculated for a year? If is for a year i think is almost impossible if are more masternodes, or i'm wrong?
All of the MN coins that have launched in the last 6-12 months have been this way: they start off with a very high short-term ROI in the thousands or 10s of thousands of %, because it takes time for people to set up MNs. POLIS isn't even a half-week old. It will take time for the hash, number of nodes, etc. to stabilize. After that the ROI will be easier to gauge more accurately.
The fact that we started at 5000% is a very good sign because it means the launch was largely successful (as the dev noted, that may not be the true ROI right now). A MN is unlikely to actually make 5000% from just MN block rewards because the number of nodes will increase a lot, but the price of the coin often rises as the number of nodes rises (because of stronger network and lower circulating supply). So this is looking like a very good investment if we stay on this trajectory (but remember - all such investments are subject to risk, please buy responsibly).