Also can someone tell me how often a given coin is minted? Is it daily, monthly?
IE if i mint a 100k stake how long until that stake is minted again?
20 days, after that period it will start aging again and again and again...
25 percent POS is probably calculated if a block and it's intrest stays untouched. So ideally every 20 days, you get a POS block. This means in a year, you get 365/20=18,25 times POS. So every 20 days you get around 1,25 percent intrest because 1,0125^18,25=1,25 or 25 percent. This also means if you do not open your wallet for a year, you will get 22,5 percent.
If the intrest is not calculated in the 25 percent, then it's 28 percent ideally.