uid for receipt

programs/bets/src/instructions/update_leaderboard.rs

@@ -26,6 +26,7 @@ pub fn update(ctx: Context<UpdateLeaderboard>, id:u64, player:Pubkey, new_score:
         leaderboard.players.push(player);
     }
 
+    leaderboard_entry.uid = receipt.uid.clone();
     receipt.active = false;
     
     msg!("Successfully updated leaderboard with score: {}", new_score);

programs/bets/src/state/ticket_leaderboard_account.rs

@@ -4,7 +4,8 @@ use crate::*;
 #[account]
 #[derive(InitSpace)]
 pub struct LeaderboardEntry{
-    pub owner: Pubkey,
+    #[max_len(50)]
+    pub uid: String,
     pub highscore: u64,
     pub total_tickets: u64
 }