I'm trying to stake, but the client says the coins aren't "mature".
8 hours, right?
Minimum Stake Age: 8 Hours
Mine took longer than 8 hours. From what I could tell maybe twice as long. If it tells you your stake reward is in 20 minutes, wait 20 minutes and it might say 15.
Then again, I'm not a CLAMillionaire. So I don't know if that's the reason. But it appears the averages could be optimized.
8 hours is really just an estimate based on how long it takes to reach maturity. The block maturity is 500, so 510 (10 for confirmation) blocks after you put the Clams in your wallet the green light should come on and staking should begin. The block times have been slower then then should be which is why it would have taken more then 8 hours.
Also, from my understanding the 'stake reward time' is just an estimation calculated from your weight and the network weight. It can be pretty inaccurate (from experience), especially with growing networks like Clam's