[T4] diff change (#1769)

* pre-t4 again

* rustfmt

core/src/genesis.rs

@@ -111,7 +111,7 @@ pub fn genesis_testnet4() -> core::Block {
 	core::Block::with_header(core::BlockHeader {
 		height: 0,
 		previous: core::hash::Hash([0xff; 32]),
-		timestamp: Utc.ymd(2018, 10, 16).and_hms(9, 0, 0),
+		timestamp: Utc.ymd(2018, 10, 17).and_hms(13, 0, 0),
 		pow: ProofOfWork {
 			total_difficulty: Difficulty::from_num(global::initial_block_difficulty()),
 			scaling_difficulty: 1,

core/src/global.rs

@@ -66,7 +66,7 @@ pub const TESTNET3_INITIAL_DIFFICULTY: u64 = 30000;
 /// 1_000 times natural scale factor for cuckatoo29
 // TODO: Enable this on real testnet
 // pub const TESTNET4_INITIAL_DIFFICULTY: u64 = 1_000 * (2<<(29-24)) * 29;
-pub const TESTNET4_INITIAL_DIFFICULTY: u64 = 1;
+pub const TESTNET4_INITIAL_DIFFICULTY: u64 = 1 * (2 << (29 - 24)) * 29;
 
 /// Trigger compaction check on average every day for FAST_SYNC_NODE,
 /// roll the dice on every block to decide,