Since this is a new PoW, it is very hard to define a starting difficulty that avoids instamining. To overcome this and contribute to a fair launch, the first 576 blocks will have no reward and the next 576 will linearly increase and reach the full reward at block 1152, after 4 difficulty adjustments were performed. Besides avoiding instamining, this should allow time for those who want to compile their own clients. Expect the starting difficulty to be hard.