Constant grin_core::consensus::INITIAL_DIFFICULTY

pub const INITIAL_DIFFICULTY: u64 = 1_000_000 * UNIT_DIFFICULTY; // 1_856_000_000u64

The initial difficulty at launch. This should be over-estimated and difficulty should come down at launch rather than up Currently grossly over-estimated at 10% of current ethereum GPUs (assuming 1GPU can solve a block at diff 1 in one block interval)