normalize difficulty

api/src/state/config.rs

@@ -10,20 +10,20 @@ use super::AccountDiscriminator;
 #[repr(C)]
 #[derive(Clone, Copy, Debug, PartialEq, Pod, ShankAccount, Zeroable)]
 pub struct Config {
-    // TODO Remove this
-    pub admin: Pubkey,
-
     /// The base reward rate paid out for a hash of minimum difficulty.
     pub base_reward_rate: u64,
 
     /// The timestamp of the last reset.
     pub last_reset_at: i64,
 
-    /// The largest known stake balance on the network.
-    pub max_stake: u64,
+    /// The minimum accepted difficulty.
+    pub min_difficulty: u64,
 
     /// The address of the proof account with the highest stake balance.
     pub top_staker: Pubkey,
+
+    /// The largest known stake balance on the network.
+    pub top_staker_balance: u64,
 }
 
 impl Discriminator for Config {