remove crown instruction

api/src/instruction.rs

@@ -32,13 +32,6 @@ pub enum OreInstruction {
     #[account(3, name = "system_program", desc = "Solana system program")]
     Close = 1,
 
-    #[account(0, name = "ore_program", desc = "Ore program")]
-    #[account(1, name = "signer", desc = "Signer", signer)]
-    #[account(2, name = "config", desc = "Ore config account", writable)]
-    #[account(3, name = "proof", desc = "Ore proof account – current top staker")]
-    #[account(4, name = "proof_new", desc = "Ore proof account – new top staker")]
-    Crown = 2,
-
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Signer", signer)]
     #[account(2, name = "bus", desc = "Ore bus account", writable)]
@@ -46,7 +39,7 @@ pub enum OreInstruction {
     #[account(4, name = "noise", desc = "Ore noise account")]
     #[account(5, name = "proof", desc = "Ore proof account", writable)]
     #[account(6, name = "slot_hashes", desc = "Solana slot hashes sysvar")]
-    Mine = 3,
+    Mine = 2,
 
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Signer", signer)]
@@ -55,7 +48,7 @@ pub enum OreInstruction {
     #[account(4, name = "proof", desc = "Ore proof account", writable)]
     #[account(5, name = "system_program", desc = "Solana system program")]
     #[account(6, name = "slot_hashes", desc = "Solana slot hashes sysvar")]
-    Open = 4,
+    Open = 3,
 
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Signer", signer)]
@@ -72,7 +65,7 @@ pub enum OreInstruction {
     #[account(12, name = "treasury", desc = "Ore treasury account", writable)]
     #[account(13, name = "treasury_tokens", desc = "Ore treasury token account", writable)]
     #[account(14, name = "token_program", desc = "SPL token program")]
-    Reset = 5,
+    Reset = 4,
 
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Signer", signer)]
@@ -80,12 +73,12 @@ pub enum OreInstruction {
     #[account(3, name = "sender", desc = "Signer token account", writable)]
     #[account(4, name = "treasury_tokens", desc = "Ore treasury token account", writable)]
     #[account(5, name = "token_program", desc = "SPL token program")]
-    Stake = 6,
+    Stake = 5,
     
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Signer", signer)]
     #[account(2, name = "proof", desc = "Ore proof account", writable)]
-    Update = 7,
+    Update = 6,
 
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Signer", signer)]
@@ -95,7 +88,7 @@ pub enum OreInstruction {
     #[account(5, name = "mint", desc = "Ore token mint account", writable)]
     #[account(6, name = "mint_v1", desc = "Ore v1 token mint account", writable)]
     #[account(7, name = "token_program", desc = "SPL token program")]
-    Upgrade = 8,
+    Upgrade = 7,
     
     #[account(0, name = "ore_program", desc = "Ore program")]
     #[account(1, name = "signer", desc = "Admin signer", signer)]
@@ -231,21 +224,6 @@ pub fn close(signer: Pubkey) -> Instruction {
     }
 }
 
-/// Builds a crown instruction.
-pub fn crown(signer: Pubkey, current_top_staker: Pubkey) -> Instruction {
-    let proof_pda = Pubkey::find_program_address(&[PROOF, signer.as_ref()], &crate::id());
-    Instruction {
-        program_id: crate::id(),
-        accounts: vec![
-            AccountMeta::new(signer, true),
-            AccountMeta::new(CONFIG_ADDRESS, false),
-            AccountMeta::new_readonly(current_top_staker, false),
-            AccountMeta::new_readonly(proof_pda.0, false),
-        ],
-        data: OreInstruction::Crown.to_vec(),
-    }
-}
-
 /// Builds a mine instruction.
 pub fn mine(
     signer: Pubkey,

api/src/state/bus.rs

@@ -19,6 +19,9 @@ pub struct Bus {
     /// The rewards this bus would have paid out in the current epoch if there no limit.
     /// Used to calculate the updated reward rate.
     pub theoretical_rewards: u64,
+
+    /// The largest known stake balance seen by the bus this epoch.
+    pub top_balance: u64,
 }
 
 impl Discriminator for Bus {

api/src/state/config.rs

@@ -1,6 +1,5 @@
 use bytemuck::{Pod, Zeroable};
 use shank::ShankAccount;
-use solana_program::pubkey::Pubkey;
 
 use crate::utils::{impl_account_from_bytes, impl_to_bytes, Discriminator};
 
@@ -19,11 +18,8 @@ pub struct Config {
     /// The minimum accepted difficulty.
     pub min_difficulty: u64,
 
-    /// The address of the proof account with the highest stake balance.
+    /// The largest known stake balance on the network from the last epoch.
-    pub top_staker: Pubkey,
+    pub top_balance: u64,
-
-    /// The largest known stake balance on the network.
-    pub top_staker_balance: u64,
 }
 
 impl Discriminator for Config {

program/src/close.rs

@@ -1,8 +1,4 @@
-use ore_api::{
+use ore_api::{loaders::*, state::Proof};
-    error::OreError,
-    loaders::*,
-    state::{Config, Proof},
-};
 use solana_program::{
     account_info::AccountInfo, entrypoint::ProgramResult, program_error::ProgramError,
     pubkey::Pubkey, system_program,
@@ -24,21 +20,13 @@ pub fn process_close<'a, 'info>(
     _data: &[u8],
 ) -> ProgramResult {
     // Load accounts
-    let [signer, config_info, proof_info, system_program] = accounts else {
+    let [signer, proof_info, system_program] = accounts else {
         return Err(ProgramError::NotEnoughAccountKeys);
     };
     load_signer(signer)?;
-    load_config(config_info, false)?;
     load_proof(proof_info, signer.key, true)?;
     load_program(system_program, system_program::id())?;
 
-    // Validate the account is not the crowned top staker.
-    let config_data = config_info.data.borrow();
-    let config = Config::try_from_bytes(&config_data)?;
-    if config.top_staker.eq(proof_info.key) {
-        return Err(OreError::CannotClose.into());
-    }
-
     // Validate balance is zero
     let proof_data = proof_info.data.borrow();
     let proof = Proof::try_from_bytes(&proof_data)?;

program/src/crown.rs

@@ -1,63 +0,0 @@
-use ore_api::{
-    consts::ONE_MINUTE,
-    error::OreError,
-    loaders::*,
-    state::{Config, Proof},
-};
-use solana_program::{
-    account_info::AccountInfo, clock::Clock, entrypoint::ProgramResult,
-    program_error::ProgramError, pubkey::Pubkey, sysvar::Sysvar,
-};
-
-use crate::utils::AccountDeserialize;
-
-/// Crown flags an account as the top staker if their balance is greater than the last known top staker.
-pub fn process_crown<'a, 'info>(
-    _program_id: &Pubkey,
-    accounts: &'a [AccountInfo<'info>],
-    _data: &[u8],
-) -> ProgramResult {
-    // Load accounts
-    let [signer, config_info, proof_info, proof_new_info] = accounts else {
-        return Err(ProgramError::NotEnoughAccountKeys);
-    };
-    load_signer(signer)?;
-    load_config(config_info, true)?;
-    load_any_proof(proof_new_info, false)?;
-
-    // Load the proof accounts.
-    let clock = Clock::get().unwrap();
-    let proof_new_data = proof_new_info.data.borrow();
-    let proof_new = Proof::try_from_bytes(&proof_new_data)?;
-    if proof_new
-        .last_stake_at
-        .saturating_add(ONE_MINUTE)
-        .gt(&clock.unix_timestamp)
-    {
-        return Err(OreError::CannotCrown.into());
-    }
-
-    // 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)?;
-    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(());
-        }
-
-        // Compare balances
-        if proof_new.balance.lt(&proof.balance) {
-            return Ok(());
-        }
-    }
-
-    // Crown the new top staker.
-    config.top_staker = *proof_new_info.key;
-    config.top_staker_balance = proof_new.balance;
-
-    Ok(())
-}

program/src/initialize.rs

@@ -141,8 +141,7 @@ pub fn process_initialize<'a, 'info>(
     config.base_reward_rate = INITIAL_BASE_REWARD_RATE;
     config.last_reset_at = 0;
     config.min_difficulty = INITIAL_MIN_DIFFICULTY as u64;
-    config.top_staker = Pubkey::new_from_array([0; 32]);
+    config.top_balance = 0;
-    config.top_staker_balance = 0;
 
     // Initialize treasury
     create_pda(

program/src/lib.rs

@@ -1,6 +1,5 @@
 mod claim;
 mod close;
-mod crown;
 mod initialize;
 mod mine;
 mod open;
@@ -11,7 +10,6 @@ mod upgrade;
 
 use claim::*;
 use close::*;
-use crown::*;
 use initialize::*;
 use mine::*;
 use open::*;
@@ -47,7 +45,6 @@ pub fn process_instruction(
     match OreInstruction::try_from(*tag).or(Err(ProgramError::InvalidInstructionData))? {
         OreInstruction::Claim => process_claim(program_id, accounts, data)?,
         OreInstruction::Close => process_close(program_id, accounts, data)?,
-        OreInstruction::Crown => process_crown(program_id, accounts, data)?,
         OreInstruction::Mine => process_mine(program_id, accounts, data)?,
         OreInstruction::Open => process_open(program_id, accounts, data)?,
         OreInstruction::Reset => process_reset(program_id, accounts, data)?,

program/src/mine.rs

@@ -115,14 +115,14 @@ pub fn process_mine<'a, 'info>(
     // If user has greater than or equal to the max stake on the network, they receive 2x multiplier.
     // Any stake less than this will receives between 1x and 2x multipler. The multipler is only active
     // if the miner's last stake deposit was more than one minute ago.
-    if config.max_stake.gt(&0) 
+    if config.top_balance.gt(&0)
         && proof.balance.gt(&0)
-        && proof.last_stake_at.saturating_add(ONE_MINUTE).le(&t)
+        && proof.last_stake_at.saturating_add(ONE_MINUTE).lt(&t)
     {
         let staking_reward = (reward as u128)
-            .checked_mul(proof.balance.min(config.top_staker_balance) as u128)
+            .checked_mul(proof.balance.min(config.top_balance) as u128)
             .unwrap()
-            .checked_div(config.top_staker_balance as u128)
+            .checked_div(config.top_balance as u128)
             .unwrap() as u64;
         reward = reward.checked_add(staking_reward).unwrap();
     }
@@ -148,6 +148,9 @@ pub fn process_mine<'a, 'info>(
     bus.theoretical_rewards = bus.theoretical_rewards.checked_add(reward).unwrap();
     bus.rewards = bus.rewards.checked_sub(reward_actual).unwrap();
     proof.balance = proof.balance.checked_add(reward_actual).unwrap();
+    if proof.balance.gt(&bus.top_balance) {
+        bus.top_balance = proof.balance;
+    }
 
     // Hash recent slot hash into the next challenge to prevent pre-mining attacks
     proof.last_hash = hash.h;

program/src/reset.rs

@@ -79,9 +79,13 @@ pub fn process_reset<'a, 'info>(
     // Reset bus accounts and calculate actual rewards mined since last reset
     let mut total_remaining_rewards = 0u64;
     let mut total_theoretical_rewards = 0u64;
+    let mut top_balance = 0u64;
     for i in 0..BUS_COUNT {
         let mut bus_data = busses[i].data.borrow_mut();
         let bus = Bus::try_from_bytes_mut(&mut bus_data)?;
+        if bus.top_balance.gt(&top_balance) {
+            top_balance = bus.top_balance;
+        }
         total_remaining_rewards = total_remaining_rewards.saturating_add(bus.rewards);
         total_theoretical_rewards =
             total_theoretical_rewards.saturating_add(bus.theoretical_rewards);
@@ -90,6 +94,9 @@ pub fn process_reset<'a, 'info>(
     }
     let total_epoch_rewards = MAX_EPOCH_REWARDS.saturating_sub(total_remaining_rewards);
 
+    // Update the top balance
+    config.top_balance = top_balance;
+
     // Update base reward rate for next epoch
     config.base_reward_rate =
         calculate_new_reward_rate(config.base_reward_rate, total_theoretical_rewards);