How often is the PoS reward of this coin being payed out, since it's 20% anually? It says the coins age for a maximum for 15 days, does this mean atleast every 15 days there is a pay out of the PoS reward?
Stakes occur on a constant basis. It's just about if you hit the block and get the reward or someone else does.
Let's say you start with 1000 XST. After your first stake you'll have 2 inputs of each 500 XST. Wehen those 500 XST are eligible to stake again they split and you have 4 inputs of each 250 and so on..
If you don't move your coins (send to someone else or to an exchange for example) and keep your wallet unlocked for staking you'll soon recognize that you'll stake pretty much 24/7 (rewards are low of course, but it adds up)
You'll get 20% interest annually if you don't move your coins and stake all the time. As soon as you move your coins, you'll kill the coinage and you have to wait again until the coins mature and are eligible to stake again.
cheers
-- sadochismo
