optimization

src/state/hash.rs

@@ -8,12 +8,14 @@ use solana_program::keccak::{Hash as KeccakHash, HASH_BYTES};
 pub struct Hash(pub [u8; HASH_BYTES]);
 
 impl From<KeccakHash> for Hash {
+    #[inline(always)]
     fn from(value: KeccakHash) -> Self {
         unsafe { transmute(value) }
     }
 }
 
 impl From<Hash> for KeccakHash {
+    #[inline(always)]
     fn from(value: Hash) -> Self {
         unsafe { transmute(value) }
     }

src/state/mod.rs

@@ -1,7 +1,9 @@
 mod bus;
 mod hash;
+mod proof;
 mod treasury;
 
 pub use bus::*;
 pub use hash::*;
+pub use proof::*;
 pub use treasury::*;

src/state/proof.rs

@@ -0,0 +1,32 @@
+use bytemuck::{Pod, Zeroable};
+use solana_program::pubkey::Pubkey;
+
+use super::Hash;
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
+pub struct Proof {
+    /// The bump of the proof account PDA.
+    pub bump: u64,
+
+    /// The account (i.e. miner) authorized to use this proof.
+    pub authority: Pubkey,
+
+    /// The quantity of tokens this miner may claim from the treasury.
+    pub claimable_rewards: u64,
+
+    /// The proof's current hash.
+    pub hash: Hash,
+
+    /// 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 Proof {
+    pub fn to_bytes(&self) -> &[u8] {
+        bytemuck::bytes_of(self)
+    }
+}