bug fixes

api/src/state/config.rs

@@ -10,7 +10,7 @@ use super::AccountDiscriminator;
 #[repr(C)]
 #[derive(Clone, Copy, Debug, PartialEq, Pod, ShankAccount, Zeroable)]
 pub struct Config {
-    /// The admin authority with permission to update the difficulty.
+    // TODO Remove this
     pub admin: Pubkey,
 
     /// The base reward rate paid out for a hash of minimum difficulty.

program/src/crown.rs

@@ -40,11 +40,11 @@ pub fn process_crown<'a, 'info>(
     // If top staker is the default null address, skip this.
     let mut config_data = config_info.data.borrow_mut();
     let config = Config::try_from_bytes_mut(&mut config_data)?;
-    let proof_data = proof_info.data.borrow();
-    let proof = Proof::try_from_bytes(&proof_data)?;
     if config.top_staker.ne(&Pubkey::new_from_array([0; 32])) {
         // Load current top staker
         load_any_proof(proof_info, false)?;
+        let proof_data = proof_info.data.borrow();
+        let proof = Proof::try_from_bytes(&proof_data)?;
         if proof_info.key.ne(&config.top_staker) {
             return Ok(());
         }

program/src/initialize.rs

@@ -138,7 +138,6 @@ pub fn process_initialize<'a, 'info>(
     let mut config_data = config_info.data.borrow_mut();
     config_data[0] = Config::discriminator() as u8;
     let config = Config::try_from_bytes_mut(&mut config_data)?;
-    config.admin = *signer.key;
     config.base_reward_rate = INITIAL_BASE_REWARD_RATE;
     config.last_reset_at = 0;
     config.max_stake = 0;

program/src/mine.rs

@@ -104,13 +104,11 @@ pub fn process_mine<'a, 'info>(
     // if the miner's last stake deposit was more than one minute ago.
     let t = clock.unix_timestamp;
     if config.max_stake.gt(&0) && proof.last_stake_at.saturating_add(ONE_MINUTE).le(&t) {
-        let staking_reward = proof
-            .balance
-            .min(config.max_stake)
-            .checked_mul(reward)
+        let staking_reward = (reward as u128)
+            .checked_mul(proof.balance.min(config.max_stake) as u128)
             .unwrap()
-            .checked_div(config.max_stake)
-            .unwrap();
+            .checked_div(config.max_stake as u128)
+            .unwrap() as u64;
         reward = reward.checked_add(staking_reward).unwrap();
     }