High Temperature Coin(HTRC)is a Masternode coin with a crazy ROI of over 5000%. However with a total supply of only 21 million coins and a average blocktime of 31 seconds, it seems that we will hit that total supply number very quickly, so I am cautious as to how the rewards will continue afterwards. If they increase the maximum supply, it will flood the market with coins and make the price go down. If they don’t, then there will be no point to Masternodes because there will be no rewards left. So, it might be worth buying a small amount and joining a shared Masternode right now to collect the rewards for some profit but until someone clears up what they are going to do once they hit 21 million coins, I’m not sure I would go all in on this coin.