refactor

core/api/src/state/proof.rs

@@ -0,0 +1,50 @@
+use bytemuck::{Pod, Zeroable};
+use shank::ShankAccount;
+use solana_program::pubkey::Pubkey;
+
+use crate::{
+    impl_account_from_bytes, impl_to_bytes,
+    utils::{AccountDiscriminator, Discriminator},
+};
+
+/// Proof accounts track a miner's current hash, claimable rewards, and lifetime stats.
+/// Every miner is allowed one proof account which is required by the program to mine or claim rewards.
+#[repr(C)]
+#[derive(Clone, Copy, Debug, PartialEq, Pod, ShankAccount, Zeroable)]
+pub struct Proof {
+    /// The signer authorized to use this proof.
+    pub authority: Pubkey,
+
+    /// The quantity of tokens this miner has staked or earned.
+    pub balance: u64,
+
+    /// The current mining challenge.
+    pub challenge: [u8; 32],
+
+    /// The last hash the miner provided.
+    pub last_hash: [u8; 32],
+
+    /// The last time this account provided a hash.
+    pub last_hash_at: i64,
+
+    /// The last time stake was deposited into this account.
+    pub last_stake_at: i64,
+
+    /// The keypair which has permission to submit hashes for mining.
+    pub miner: Pubkey,
+
+    /// The total lifetime hashes provided by this miner.
+    pub total_hashes: u64,
+
+    /// The total lifetime rewards distributed to this miner.
+    pub total_rewards: u64,
+}
+
+impl Discriminator for Proof {
+    fn discriminator() -> AccountDiscriminator {
+        AccountDiscriminator::Proof
+    }
+}
+
+impl_to_bytes!(Proof);
+impl_account_from_bytes!(Proof);