diff --git a/wallet/src/lib.rs b/wallet/src/lib.rs
index ac4cf6d..9f2fb20 100644
--- a/wallet/src/lib.rs
+++ b/wallet/src/lib.rs
@@ -13,7 +13,7 @@ use log::info;
 use nssa::{Account, Address};
 
 use clap::{Parser, Subcommand};
-use nssa_core::Commitment;
+use nssa_core::{Commitment, MembershipProof};
 
 use crate::cli::WalletSubcommand;
 use crate::{
@@ -135,16 +135,17 @@ impl WalletCore {
         Ok(NSSATransaction::try_from(&pub_tx)?)
     }
 
-    pub async fn check_private_account_initialized(&self, addr: &Address) -> bool {
+    pub async fn check_private_account_initialized(
+        &self,
+        addr: &Address,
+    ) -> Result<Option<MembershipProof>> {
         if let Some(acc_comm) = self.get_private_account_commitment(addr) {
-            matches!(
-                self.sequencer_client
-                    .get_proof_for_commitment(acc_comm)
-                    .await,
-                Ok(Some(_))
-            )
+            self.sequencer_client
+                .get_proof_for_commitment(acc_comm)
+                .await
+                .map_err(anyhow::Error::from)
         } else {
-            false
+            Ok(None)
         }
     }
 
@@ -691,16 +692,17 @@ pub async fn execute_subcommand(command: Command) -> Result<SubcommandReturnValu
             let pinata_addr = pinata_addr.parse().unwrap();
             let winner_addr = winner_addr.parse().unwrap();
 
-            let winner_intialized = wallet_core
+            let winner_initialization = wallet_core
                 .check_private_account_initialized(&winner_addr)
-                .await;
+                .await?;
 
-            let (res, [secret_winner]) = if winner_intialized {
+            let (res, [secret_winner]) = if let Some(winner_proof) = winner_initialization {
                 wallet_core
                     .claim_pinata_private_owned_account_already_initialized(
                         pinata_addr,
                         winner_addr,
                         solution,
+                        winner_proof,
                     )
                     .await?
             } else {
diff --git a/wallet/src/pinata_interactions.rs b/wallet/src/pinata_interactions.rs
index b0b2dbf..4506161 100644
--- a/wallet/src/pinata_interactions.rs
+++ b/wallet/src/pinata_interactions.rs
@@ -1,7 +1,7 @@
 use common::{ExecutionFailureKind, sequencer_client::json::SendTxResponse};
 use key_protocol::key_management::ephemeral_key_holder::EphemeralKeyHolder;
 use nssa::{Address, privacy_preserving_transaction::circuit};
-use nssa_core::{Commitment, SharedSecretKey, account::AccountWithMetadata};
+use nssa_core::{MembershipProof, SharedSecretKey, account::AccountWithMetadata};
 
 use crate::{WalletCore, helperfunctions::produce_random_nonces};
 
@@ -29,6 +29,7 @@ impl WalletCore {
         pinata_addr: Address,
         winner_addr: Address,
         solution: u128,
+        winner_proof: MembershipProof,
     ) -> Result<(SendTxResponse, [SharedSecretKey; 1]), ExecutionFailureKind> {
         let Some((winner_keys, winner_acc)) = self
             .storage
@@ -46,8 +47,6 @@ impl WalletCore {
 
         let program = nssa::program::Program::pinata();
 
-        let winner_commitment = Commitment::new(&winner_npk, &winner_acc);
-
         let pinata_pre = AccountWithMetadata::new(pinata_acc.clone(), false, pinata_addr);
         let winner_pre = AccountWithMetadata::new(winner_acc.clone(), true, &winner_npk);
 
@@ -62,11 +61,7 @@ impl WalletCore {
             &[(winner_npk.clone(), shared_secret_winner.clone())],
             &[(
                 winner_keys.private_key_holder.nullifier_secret_key,
-                self.sequencer_client
-                    .get_proof_for_commitment(winner_commitment)
-                    .await
-                    .unwrap()
-                    .unwrap(),
+                winner_proof,
             )],
             &program,
         )