account discriminator macro

api/src/state/proof.rs

@@ -1,7 +1,9 @@
 use bytemuck::{Pod, Zeroable};
-use ore_utils::{account, Discriminator};
+use ore_utils::*;
 use solana_program::pubkey::Pubkey;
 
+use crate::consts::PROOF;
+
 use super::AccountDiscriminator;
 
 /// Proof accounts track a miner's current hash, claimable rewards, and lifetime stats.
@@ -37,10 +39,9 @@ pub struct Proof {
     pub total_rewards: u64,
 }
 
-impl Discriminator for Proof {
-    fn discriminator() -> u8 {
-        AccountDiscriminator::Proof.into()
-    }
+/// Derive the PDA of a proof account.
+pub fn proof_pda(authority: Pubkey) -> (Pubkey, u8) {
+    Pubkey::find_program_address(&[PROOF, authority.as_ref()], &crate::id())
 }
 
-account!(Proof);
+account!(AccountDiscriminator, Proof);