Your announcement states the block reward is 8 PHR.  Per the white paper, stakers share 2.8 PHR while the masternodes share 4.2 PHR. That is only 7 PHR.  Where is the other PHR?

With the max token of 12,546,890 at 1 minute block time, all the possible tokens would be created in less than 3 years (12,456,890 / 8 PHR/block / 60 min/hr / 24 hr/day / 365 days/year = 2.96 years).  What happens after 3 years?

With your current level of master nodes of 450 (or 4.5 million PHR), 4.2 PHR is shared every 60 seconds.

For an investment of 10,000 PHR, the ROI would be about 49% annually.  Of course that would change as more masternodes are added.

Given your token in circulation is already at greater than 5 million, the remaining time to reach the maximum amount of less than 2 years.

How would the masternodes and stakers be rewarded?