If circulating supply is 17M and let say 10M will be locked in masternode with ROI 40% producing 4M a year, will Zoin Max supply exceed 21M?
you should know that the ROI is approximate and depends mainly on the number of MASTERNODES "ZOINODES"
10M represents 400 ZOINODES so no 40% ROI
In all case, Zoin Total supply: 21M HARD CAP