diff --git a/src/connector.rs b/src/connector.rs
index fd4df0110..6db5a125a 100644
--- a/src/connector.rs
+++ b/src/connector.rs
@@ -8,7 +8,7 @@ use crate::deposit_event::*;
 use crate::engine::Engine;
 use crate::json::parse_json;
 use crate::prelude::*;
-use crate::prover::validate_eth_address;
+use crate::prover::{validate_eth_address, Proof};
 use crate::storage::{self, EthConnectorStorageId, KeyPrefix};
 #[cfg(feature = "log")]
 use alloc::format;
@@ -181,7 +181,6 @@ impl EthConnectorContract {
     pub fn deposit(&self) {
         self.assert_not_paused(PAUSE_DEPOSIT);
 
-        use crate::prover::Proof;
         #[cfg(feature = "log")]
         sdk::log("[Deposit tokens]");
 
@@ -643,6 +642,11 @@ impl EthConnectorContract {
         sdk::storage_has_key(&self.used_event_key(key))
     }
 
+    /// Checks whether the provided proof was already used
+    pub fn is_used_proof(&self, proof: Proof) -> bool {
+        self.check_used_event(&proof.get_key())
+    }
+
     /// Get Eth connector paused flags
     pub fn get_paused_flags(&self) -> PausedMask {
         self.get_paused()
diff --git a/src/lib.rs b/src/lib.rs
index eb4cb5364..ca8d4eeed 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -86,8 +86,9 @@ mod contract {
     #[cfg(feature = "evm_bully")]
     use crate::parameters::{BeginBlockArgs, BeginChainArgs};
     use crate::parameters::{
-        ExpectUtf8, FunctionCallArgs, GetStorageAtArgs, InitCallArgs, NewCallArgs,
-        PauseEthConnectorCallArgs, SetContractDataCallArgs, TransferCallCallArgs, ViewCallArgs,
+        ExpectUtf8, FunctionCallArgs, GetStorageAtArgs, InitCallArgs, IsUsedProofCallArgs,
+        NewCallArgs, PauseEthConnectorCallArgs, SetContractDataCallArgs, TransferCallCallArgs,
+        ViewCallArgs,
     };
     use crate::prelude::{Address, H256, U256};
     use crate::sdk;
@@ -401,6 +402,15 @@ mod contract {
         EthConnectorContract::get_instance().finish_deposit_near();
     }
 
+    #[no_mangle]
+    pub extern "C" fn is_used_proof() {
+        let args = IsUsedProofCallArgs::try_from_slice(&sdk::read_input()).expect(ERR_FAILED_PARSE);
+
+        let is_used_proof = EthConnectorContract::get_instance().is_used_proof(args.proof);
+        let res = is_used_proof.try_to_vec().unwrap();
+        sdk::return_output(&res[..]);
+    }
+
     #[no_mangle]
     pub extern "C" fn ft_total_supply() {
         EthConnectorContract::get_instance().ft_total_supply();
diff --git a/src/parameters.rs b/src/parameters.rs
index 7b1831427..fc2d4c5f9 100644
--- a/src/parameters.rs
+++ b/src/parameters.rs
@@ -145,6 +145,14 @@ pub struct DepositCallArgs {
     pub relayer_eth_account: Option<EthAddress>,
 }
 
+/// Eth-connector isUsedProof arguments
+#[cfg(feature = "engine")]
+#[derive(BorshSerialize, BorshDeserialize)]
+pub struct IsUsedProofCallArgs {
+    /// Proof data
+    pub proof: Proof,
+}
+
 /// withdraw result for eth-connector
 #[cfg(feature = "engine")]
 #[derive(BorshSerialize)]
diff --git a/tests/test_connector.rs b/tests/test_connector.rs
index d0e4bda26..9dcb8c255 100644
--- a/tests/test_connector.rs
+++ b/tests/test_connector.rs
@@ -68,6 +68,11 @@ pub struct WithdrawResult {
     pub eth_custodian_address: EthAddress,
 }
 
+#[derive(BorshDeserialize, Debug)]
+pub struct IsUsedProofResult {
+    pub is_used_proof: bool,
+}
+
 fn init(custodian_address: &str) -> (UserAccount, UserAccount) {
     let master_account = near_sdk_sim::init_simulator(None);
     let contract = init_contract(&master_account, CONTRACT_ACC, custodian_address);
@@ -144,6 +149,35 @@ fn call_deposit_near(master_account: &UserAccount, contract: &str) -> Vec<Option
     res.promise_results()
 }
 
+fn call_is_used_proof(account: &UserAccount, contract: &str, proof: &str) -> bool {
+    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let res = account.view(
+        contract.to_string(),
+        "is_used_proof",
+        &proof.try_to_vec().unwrap(),
+    );
+    let result = IsUsedProofResult::try_from_slice(&res.unwrap()).unwrap();
+    result.is_used_proof
+}
+
+fn assert_proof_was_used(account: &UserAccount, contract: &str, proof: &str) {
+    let is_used_proof = call_is_used_proof(account, contract, proof);
+    assert!(
+        is_used_proof,
+        "{}",
+        "Expected not to fail because the proof should have been already used",
+    );
+}
+
+fn assert_proof_was_not_used(account: &UserAccount, contract: &str, proof: &str) {
+    let is_used_proof = call_is_used_proof(account, contract, proof);
+    assert!(
+        !is_used_proof,
+        "{}",
+        "Expected not to fail and to have an unused proof but it was already used",
+    );
+}
+
 #[allow(dead_code)]
 fn print_logs(logs: &Vec<String>) {
     for l in logs {
@@ -265,6 +299,7 @@ fn test_eth_deposit_balance_total_supply() {
     res.assert_success();
 
     call_deposit_eth(&contract, CONTRACT_ACC);
+    assert_proof_was_used(&contract, CONTRACT_ACC, PROOF_DATA_ETH);
 
     let balance = get_eth_balance(
         &master_account,
@@ -451,12 +486,18 @@ fn test_ft_transfer_call_eth() {
 #[test]
 fn test_deposit_with_same_proof() {
     let (_master_account, contract) = init(CUSTODIAN_ADDRESS);
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, PROOF_DATA_NEAR);
+
     let promises = call_deposit_near(&contract, CONTRACT_ACC);
     for p in promises.iter() {
         assert!(p.is_some());
         let p = p.as_ref().unwrap();
         p.assert_success()
     }
+
+    assert_proof_was_used(&contract, CONTRACT_ACC, PROOF_DATA_NEAR);
+
     let promises = call_deposit_near(&contract, CONTRACT_ACC);
     let promise = &promises[promises.len() - 2];
     assert_execution_status_failure(
@@ -477,6 +518,8 @@ fn test_deposit_wrong_custodian_address() {
         "ERR_WRONG_EVENT_ADDRESS",
         "Expected failure as the provided proof originated from wrong EthCustodian contract, but deposit succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, PROOF_DATA_NEAR);
 }
 
 #[test]
@@ -921,9 +964,9 @@ fn test_get_accounts_counter_and_transfer() {
 
 #[test]
 fn test_deposit_near_with_zero_fee() {
-    let (master_account, _) = init(CUSTODIAN_ADDRESS);
-    let proof = r#"{"log_index":0,"log_entry_data":[248,251,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,184,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,249,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,184,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,23,160,7,139,123,21,146,99,81,234,117,153,151,30,67,221,231,90,105,219,121,127,196,224,201,83,178,31,173,155,190,123,227,174,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,109,150,79,199,61,172,73,162,195,49,105,169,235,252,47,207,92,249,136,136,160,227,202,170,144,85,104,169,90,220,93,227,155,76,252,229,223,163,146,127,223,157,121,27,238,116,64,112,216,124,129,107,9,160,158,128,122,7,117,120,186,231,92,224,181,67,43,66,153,79,155,38,238,166,68,1,151,100,134,126,214,86,59,66,174,201,160,235,177,124,164,253,179,174,206,160,196,186,61,51,64,217,35,121,86,229,24,251,162,51,82,72,31,218,240,150,32,157,48,185,1,0,0,0,8,0,0,32,0,0,0,0,0,0,128,0,0,0,2,0,128,0,64,32,0,0,0,0,0,0,64,0,0,10,0,0,0,0,0,0,3,0,0,0,0,64,128,0,0,64,0,0,0,0,0,16,0,0,130,0,1,16,0,32,4,0,0,0,0,0,2,1,0,0,0,0,0,8,0,8,0,0,32,0,4,128,2,0,128,0,0,0,0,0,0,0,0,0,4,32,0,8,2,0,0,0,128,65,0,136,0,0,40,0,0,0,8,0,0,128,0,34,0,4,0,185,2,0,0,4,32,128,0,2,0,0,0,128,0,0,10,0,1,0,1,0,0,0,0,32,1,8,128,0,0,4,0,0,0,128,128,0,70,0,0,0,0,0,0,16,64,0,64,0,34,64,0,0,0,4,0,0,0,0,1,128,0,9,0,0,0,0,0,16,0,0,64,2,0,0,0,132,0,64,32,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,4,0,0,0,32,8,0,16,0,8,0,16,68,0,0,0,16,0,0,0,128,0,64,0,0,128,0,0,0,0,0,0,0,16,0,1,0,16,132,49,181,116,68,131,157,92,101,131,122,18,0,131,101,155,9,132,96,174,110,74,153,216,131,1,10,1,132,103,101,116,104,134,103,111,49,46,49,54,135,119,105,110,100,111,119,115,160,228,82,26,232,236,82,141,6,111,169,92,14,115,254,59,131,192,3,202,209,126,79,140,182,163,12,185,45,210,17,60,38,136,84,114,37,115,236,183,145,213],"proof":[[248,145,160,187,129,186,104,13,250,13,252,114,170,223,247,137,53,113,225,188,217,54,244,108,193,247,236,197,29,0,161,119,76,227,184,160,66,209,234,66,254,223,80,22,246,80,204,38,2,90,115,201,183,79,207,47,192,234,143,221,89,78,36,199,127,9,55,190,160,91,160,251,58,165,255,90,2,105,47,46,220,67,3,52,105,42,182,130,224,19,162,115,159,136,158,218,93,187,148,188,9,128,128,128,128,128,160,181,223,248,223,173,187,103,169,52,204,62,13,90,70,147,236,199,27,201,112,157,4,139,63,188,12,98,117,10,82,85,125,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,249,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,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-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(CUSTODIAN_ADDRESS);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[248,251,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,184,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,249,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,184,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,23,160,7,139,123,21,146,99,81,234,117,153,151,30,67,221,231,90,105,219,121,127,196,224,201,83,178,31,173,155,190,123,227,174,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,109,150,79,199,61,172,73,162,195,49,105,169,235,252,47,207,92,249,136,136,160,227,202,170,144,85,104,169,90,220,93,227,155,76,252,229,223,163,146,127,223,157,121,27,238,116,64,112,216,124,129,107,9,160,158,128,122,7,117,120,186,231,92,224,181,67,43,66,153,79,155,38,238,166,68,1,151,100,134,126,214,86,59,66,174,201,160,235,177,124,164,253,179,174,206,160,196,186,61,51,64,217,35,121,86,229,24,251,162,51,82,72,31,218,240,150,32,157,48,185,1,0,0,0,8,0,0,32,0,0,0,0,0,0,128,0,0,0,2,0,128,0,64,32,0,0,0,0,0,0,64,0,0,10,0,0,0,0,0,0,3,0,0,0,0,64,128,0,0,64,0,0,0,0,0,16,0,0,130,0,1,16,0,32,4,0,0,0,0,0,2,1,0,0,0,0,0,8,0,8,0,0,32,0,4,128,2,0,128,0,0,0,0,0,0,0,0,0,4,32,0,8,2,0,0,0,128,65,0,136,0,0,40,0,0,0,8,0,0,128,0,34,0,4,0,185,2,0,0,4,32,128,0,2,0,0,0,128,0,0,10,0,1,0,1,0,0,0,0,32,1,8,128,0,0,4,0,0,0,128,128,0,70,0,0,0,0,0,0,16,64,0,64,0,34,64,0,0,0,4,0,0,0,0,1,128,0,9,0,0,0,0,0,16,0,0,64,2,0,0,0,132,0,64,32,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,4,0,0,0,32,8,0,16,0,8,0,16,68,0,0,0,16,0,0,0,128,0,64,0,0,128,0,0,0,0,0,0,0,16,0,1,0,16,132,49,181,116,68,131,157,92,101,131,122,18,0,131,101,155,9,132,96,174,110,74,153,216,131,1,10,1,132,103,101,116,104,134,103,111,49,46,49,54,135,119,105,110,100,111,119,115,160,228,82,26,232,236,82,141,6,111,169,92,14,115,254,59,131,192,3,202,209,126,79,140,182,163,12,185,45,210,17,60,38,136,84,114,37,115,236,183,145,213],"proof":[[248,145,160,187,129,186,104,13,250,13,252,114,170,223,247,137,53,113,225,188,217,54,244,108,193,247,236,197,29,0,161,119,76,227,184,160,66,209,234,66,254,223,80,22,246,80,204,38,2,90,115,201,183,79,207,47,192,234,143,221,89,78,36,199,127,9,55,190,160,91,160,251,58,165,255,90,2,105,47,46,220,67,3,52,105,42,182,130,224,19,162,115,159,136,158,218,93,187,148,188,9,128,128,128,128,128,160,181,223,248,223,173,187,103,169,52,204,62,13,90,70,147,236,199,27,201,112,157,4,139,63,188,12,98,117,10,82,85,125,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,249,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,184,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -933,6 +976,8 @@ fn test_deposit_near_with_zero_fee() {
     );
     res.assert_success();
 
+    assert_proof_was_used(&contract, CONTRACT_ACC, proof_str);
+
     let deposited_amount = 3000;
 
     let balance = get_near_balance(&master_account, DEPOSITED_RECIPIENT, CONTRACT_ACC);
@@ -967,8 +1012,8 @@ fn test_deposit_evm_with_zero_fee() {
     );
     res.assert_success();
 
-    let proof = r#"{"log_index":0,"log_entry_data":[249,1,27,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,208,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":3,"receipt_data":[249,2,41,1,131,2,246,200,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,208,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,23,160,110,48,40,236,52,198,197,25,255,191,199,4,137,3,185,31,202,84,90,80,104,32,176,13,144,141,165,183,36,30,94,138,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,148,156,193,169,167,156,148,249,191,22,225,202,121,212,79,2,197,75,191,164,160,127,26,168,212,111,22,173,213,25,217,187,227,114,86,173,99,166,195,67,16,104,111,200,109,110,147,241,23,71,122,89,215,160,47,120,179,75,110,158,228,18,242,156,38,111,95,25,236,211,158,53,53,62,89,190,2,40,220,41,151,200,127,219,33,219,160,222,177,165,249,98,109,130,37,226,229,165,113,45,12,145,30,16,28,154,86,22,203,218,233,13,246,165,177,61,57,68,83,185,1,0,0,32,8,0,33,0,0,0,64,0,32,0,128,0,0,0,132,0,0,0,64,32,64,0,0,1,0,32,64,0,0,8,0,0,0,0,0,0,137,32,0,0,0,64,128,0,0,16,0,0,0,0,33,64,0,1,0,0,0,0,0,0,0,0,68,0,0,0,2,1,64,0,0,0,0,9,16,0,0,32,0,0,0,128,2,0,0,0,33,0,0,0,128,0,0,0,12,64,32,8,66,2,0,0,64,0,0,8,0,0,40,8,8,0,0,0,0,16,0,0,0,0,64,49,0,0,8,0,96,0,0,18,0,0,0,0,0,64,10,0,1,0,0,32,0,0,0,33,0,0,128,136,10,64,0,64,0,0,192,128,0,0,64,1,0,0,4,0,8,0,64,0,34,0,0,0,0,0,0,0,0,0,0,0,8,8,0,4,0,0,0,32,0,4,0,2,0,0,0,129,4,0,96,16,4,8,0,0,0,0,0,0,1,0,128,16,0,0,2,0,4,0,32,0,8,0,0,0,0,16,0,1,0,0,0,0,64,0,128,0,0,32,36,128,0,0,4,64,0,8,8,16,0,1,4,16,132,50,32,156,229,131,157,92,137,131,122,18,0,131,35,159,183,132,96,174,111,126,153,216,131,1,10,3,132,103,101,116,104,136,103,111,49,46,49,54,46,51,133,108,105,110,117,120,160,59,74,90,253,211,14,166,114,39,213,120,95,221,43,109,173,72,205,160,203,71,44,83,159,36,59,129,84,32,16,254,251,136,49,16,97,244,161,246,244,85],"proof":[[248,113,160,227,103,29,228,16,56,196,146,115,29,122,202,254,140,214,86,189,108,47,197,2,195,50,211,4,126,58,175,71,11,70,78,160,229,239,23,242,100,150,90,169,21,162,252,207,202,244,187,71,172,126,191,33,166,162,45,134,108,114,6,76,78,177,148,140,128,128,128,128,128,128,160,21,91,249,81,132,162,52,236,128,181,5,72,158,228,177,131,87,144,64,194,111,103,180,16,183,103,245,136,125,213,208,76,128,128,128,128,128,128,128,128],[249,1,241,128,160,52,154,34,8,39,210,121,1,151,92,91,225,198,154,204,207,11,204,187,59,223,154,187,102,115,110,193,141,201,198,95,253,160,218,19,188,241,210,48,51,3,76,125,48,152,171,188,45,136,109,71,236,171,242,162,10,34,245,160,191,5,120,9,80,129,160,147,160,142,184,113,171,112,171,131,124,150,117,65,27,207,149,119,136,120,65,7,99,155,114,169,57,91,125,26,117,49,67,160,173,217,104,114,149,170,18,227,251,73,78,11,220,243,240,66,117,32,199,64,138,173,169,43,8,122,39,47,210,54,41,192,160,139,116,124,73,113,242,225,65,167,48,33,13,149,51,152,196,79,93,126,103,116,48,177,25,80,186,34,55,15,116,2,13,160,67,10,207,13,108,228,254,73,175,10,166,107,144,157,150,135,173,179,140,112,129,205,168,132,194,4,191,175,239,50,66,245,160,26,193,195,232,40,106,60,72,133,32,204,205,104,90,20,60,166,16,214,184,115,44,216,62,82,30,141,124,160,72,173,62,160,67,5,174,33,105,28,248,245,48,15,129,153,96,27,97,125,29,194,233,139,228,8,243,221,79,2,151,52,75,30,47,136,160,103,94,192,58,117,224,88,80,21,183,254,178,135,21,78,20,233,250,7,22,243,14,41,56,12,118,206,224,75,42,96,77,160,225,64,237,254,248,145,134,195,166,49,205,129,233,54,142,136,235,242,10,14,175,76,73,131,26,135,102,237,64,23,102,213,160,167,104,45,101,228,93,89,216,167,142,125,0,216,77,167,4,245,156,140,98,117,19,165,25,185,204,84,161,175,153,193,20,160,53,22,192,197,176,225,102,6,251,115,216,238,53,110,254,106,193,134,232,100,173,93,211,71,195,10,192,107,97,190,165,12,160,104,206,244,51,77,131,79,209,64,233,97,35,142,75,42,205,198,120,222,90,199,168,126,235,12,225,30,240,214,56,253,168,160,230,94,127,56,22,169,3,159,236,49,217,88,2,175,168,22,104,177,154,127,106,165,176,238,236,141,83,64,123,28,177,206,160,140,137,2,195,227,9,182,245,76,62,215,174,168,254,15,125,111,241,30,50,110,189,66,58,230,2,252,104,182,247,223,94,128],[249,2,48,32,185,2,44,249,2,41,1,131,2,246,200,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,208,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0]]}"#;
-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let proof_str = r#"{"log_index":0,"log_entry_data":[249,1,27,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,208,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":3,"receipt_data":[249,2,41,1,131,2,246,200,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,208,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,23,160,110,48,40,236,52,198,197,25,255,191,199,4,137,3,185,31,202,84,90,80,104,32,176,13,144,141,165,183,36,30,94,138,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,148,156,193,169,167,156,148,249,191,22,225,202,121,212,79,2,197,75,191,164,160,127,26,168,212,111,22,173,213,25,217,187,227,114,86,173,99,166,195,67,16,104,111,200,109,110,147,241,23,71,122,89,215,160,47,120,179,75,110,158,228,18,242,156,38,111,95,25,236,211,158,53,53,62,89,190,2,40,220,41,151,200,127,219,33,219,160,222,177,165,249,98,109,130,37,226,229,165,113,45,12,145,30,16,28,154,86,22,203,218,233,13,246,165,177,61,57,68,83,185,1,0,0,32,8,0,33,0,0,0,64,0,32,0,128,0,0,0,132,0,0,0,64,32,64,0,0,1,0,32,64,0,0,8,0,0,0,0,0,0,137,32,0,0,0,64,128,0,0,16,0,0,0,0,33,64,0,1,0,0,0,0,0,0,0,0,68,0,0,0,2,1,64,0,0,0,0,9,16,0,0,32,0,0,0,128,2,0,0,0,33,0,0,0,128,0,0,0,12,64,32,8,66,2,0,0,64,0,0,8,0,0,40,8,8,0,0,0,0,16,0,0,0,0,64,49,0,0,8,0,96,0,0,18,0,0,0,0,0,64,10,0,1,0,0,32,0,0,0,33,0,0,128,136,10,64,0,64,0,0,192,128,0,0,64,1,0,0,4,0,8,0,64,0,34,0,0,0,0,0,0,0,0,0,0,0,8,8,0,4,0,0,0,32,0,4,0,2,0,0,0,129,4,0,96,16,4,8,0,0,0,0,0,0,1,0,128,16,0,0,2,0,4,0,32,0,8,0,0,0,0,16,0,1,0,0,0,0,64,0,128,0,0,32,36,128,0,0,4,64,0,8,8,16,0,1,4,16,132,50,32,156,229,131,157,92,137,131,122,18,0,131,35,159,183,132,96,174,111,126,153,216,131,1,10,3,132,103,101,116,104,136,103,111,49,46,49,54,46,51,133,108,105,110,117,120,160,59,74,90,253,211,14,166,114,39,213,120,95,221,43,109,173,72,205,160,203,71,44,83,159,36,59,129,84,32,16,254,251,136,49,16,97,244,161,246,244,85],"proof":[[248,113,160,227,103,29,228,16,56,196,146,115,29,122,202,254,140,214,86,189,108,47,197,2,195,50,211,4,126,58,175,71,11,70,78,160,229,239,23,242,100,150,90,169,21,162,252,207,202,244,187,71,172,126,191,33,166,162,45,134,108,114,6,76,78,177,148,140,128,128,128,128,128,128,160,21,91,249,81,132,162,52,236,128,181,5,72,158,228,177,131,87,144,64,194,111,103,180,16,183,103,245,136,125,213,208,76,128,128,128,128,128,128,128,128],[249,1,241,128,160,52,154,34,8,39,210,121,1,151,92,91,225,198,154,204,207,11,204,187,59,223,154,187,102,115,110,193,141,201,198,95,253,160,218,19,188,241,210,48,51,3,76,125,48,152,171,188,45,136,109,71,236,171,242,162,10,34,245,160,191,5,120,9,80,129,160,147,160,142,184,113,171,112,171,131,124,150,117,65,27,207,149,119,136,120,65,7,99,155,114,169,57,91,125,26,117,49,67,160,173,217,104,114,149,170,18,227,251,73,78,11,220,243,240,66,117,32,199,64,138,173,169,43,8,122,39,47,210,54,41,192,160,139,116,124,73,113,242,225,65,167,48,33,13,149,51,152,196,79,93,126,103,116,48,177,25,80,186,34,55,15,116,2,13,160,67,10,207,13,108,228,254,73,175,10,166,107,144,157,150,135,173,179,140,112,129,205,168,132,194,4,191,175,239,50,66,245,160,26,193,195,232,40,106,60,72,133,32,204,205,104,90,20,60,166,16,214,184,115,44,216,62,82,30,141,124,160,72,173,62,160,67,5,174,33,105,28,248,245,48,15,129,153,96,27,97,125,29,194,233,139,228,8,243,221,79,2,151,52,75,30,47,136,160,103,94,192,58,117,224,88,80,21,183,254,178,135,21,78,20,233,250,7,22,243,14,41,56,12,118,206,224,75,42,96,77,160,225,64,237,254,248,145,134,195,166,49,205,129,233,54,142,136,235,242,10,14,175,76,73,131,26,135,102,237,64,23,102,213,160,167,104,45,101,228,93,89,216,167,142,125,0,216,77,167,4,245,156,140,98,117,19,165,25,185,204,84,161,175,153,193,20,160,53,22,192,197,176,225,102,6,251,115,216,238,53,110,254,106,193,134,232,100,173,93,211,71,195,10,192,107,97,190,165,12,160,104,206,244,51,77,131,79,209,64,233,97,35,142,75,42,205,198,120,222,90,199,168,126,235,12,225,30,240,214,56,253,168,160,230,94,127,56,22,169,3,159,236,49,217,88,2,175,168,22,104,177,154,127,106,165,176,238,236,141,83,64,123,28,177,206,160,140,137,2,195,227,9,182,245,76,62,215,174,168,254,15,125,111,241,30,50,110,189,66,58,230,2,252,104,182,247,223,94,128],[249,2,48,32,185,2,44,249,2,41,1,131,2,246,200,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,9,109,233,194,184,165,184,194,44,238,50,137,177,1,246,150,13,104,229,30,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,208,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -978,6 +1023,8 @@ fn test_deposit_evm_with_zero_fee() {
     );
     res.assert_success();
 
+    assert_proof_was_used(&contract, CONTRACT_ACC, proof_str);
+
     let deposited_amount = 2000;
 
     let balance = get_eth_balance(
@@ -1007,9 +1054,9 @@ fn test_deposit_evm_with_zero_fee() {
 #[test]
 fn test_deposit_near_amount_less_fee() {
     let custodian_address = "73c8931CA2aD746d97a59A7ABDDa0a9205F7ffF9";
-    let (master_account, _) = init(custodian_address);
-    let proof = r#"{"log_index":0,"log_entry_data":[248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,10,160,139,92,51,142,163,95,21,160,61,29,148,206,54,147,187,96,77,109,244,8,130,155,249,198,206,30,173,216,144,176,252,123,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,218,9,209,192,173,39,133,109,141,57,2,146,184,12,94,217,6,138,173,67,121,185,24,179,133,189,219,40,81,210,73,106,160,219,108,244,199,44,203,84,71,126,74,82,240,203,255,238,20,226,29,239,51,7,19,144,34,156,137,232,159,71,30,164,29,160,209,61,241,33,17,103,192,203,57,156,112,250,18,166,26,237,248,153,226,185,87,220,156,93,249,17,39,190,125,96,247,239,185,1,0,0,0,8,0,0,0,0,0,0,0,0,1,0,0,0,0,0,128,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,32,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,32,0,0,0,0,8,0,0,2,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,0,0,0,0,0,0,40,0,0,0,0,0,0,0,0,0,0,0,0,0,144,4,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,132,91,80,110,139,131,157,118,104,131,122,18,0,131,30,4,87,132,96,175,154,220,140,115,112,105,100,101,114,49,48,1,2,9,64,160,80,163,212,151,183,11,70,219,178,190,167,172,64,187,47,14,29,226,253,132,116,145,81,143,54,249,121,123,193,241,120,249,136,244,120,239,134,243,43,177,139],"proof":[[248,81,160,164,35,68,182,184,52,174,73,6,81,4,92,187,190,187,106,255,124,123,24,244,168,161,247,60,181,75,29,192,175,96,140,128,128,128,128,128,128,128,160,169,157,199,164,106,205,109,88,111,183,255,180,108,15,155,137,126,163,108,44,117,125,138,221,3,188,93,85,146,129,19,139,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]}"#;
-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(custodian_address);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,10,160,139,92,51,142,163,95,21,160,61,29,148,206,54,147,187,96,77,109,244,8,130,155,249,198,206,30,173,216,144,176,252,123,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,218,9,209,192,173,39,133,109,141,57,2,146,184,12,94,217,6,138,173,67,121,185,24,179,133,189,219,40,81,210,73,106,160,219,108,244,199,44,203,84,71,126,74,82,240,203,255,238,20,226,29,239,51,7,19,144,34,156,137,232,159,71,30,164,29,160,209,61,241,33,17,103,192,203,57,156,112,250,18,166,26,237,248,153,226,185,87,220,156,93,249,17,39,190,125,96,247,239,185,1,0,0,0,8,0,0,0,0,0,0,0,0,1,0,0,0,0,0,128,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,32,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,32,0,0,0,0,8,0,0,2,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,0,0,0,0,0,0,40,0,0,0,0,0,0,0,0,0,0,0,0,0,144,4,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,132,91,80,110,139,131,157,118,104,131,122,18,0,131,30,4,87,132,96,175,154,220,140,115,112,105,100,101,114,49,48,1,2,9,64,160,80,163,212,151,183,11,70,219,178,190,167,172,64,187,47,14,29,226,253,132,116,145,81,143,54,249,121,123,193,241,120,249,136,244,120,239,134,243,43,177,139],"proof":[[248,81,160,164,35,68,182,184,52,174,73,6,81,4,92,187,190,187,106,255,124,123,24,244,168,161,247,60,181,75,29,192,175,96,140,128,128,128,128,128,128,128,160,169,157,199,164,106,205,109,88,111,183,255,180,108,15,155,137,126,163,108,44,117,125,138,221,3,188,93,85,146,129,19,139,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -1023,14 +1070,16 @@ fn test_deposit_near_amount_less_fee() {
         ERR_NOT_ENOUGH_BALANCE_FOR_FEE,
         "Expected failure as the deposited amount is less than fee, but deposit to NEP-141 succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, proof_str);
 }
 
 #[test]
 fn test_deposit_evm_amount_less_fee() {
     let custodian_address = "73c8931CA2aD746d97a59A7ABDDa0a9205F7ffF9";
-    let (master_account, _) = init(custodian_address);
-    let proof = r#"{"log_index":0,"log_entry_data":[249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,10,160,234,97,221,132,104,51,119,219,129,206,197,27,130,197,14,113,167,32,152,214,207,205,156,210,35,213,198,227,116,42,51,224,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,15,150,233,184,181,140,226,81,205,139,229,87,226,149,49,207,117,33,36,83,124,8,75,199,231,48,13,23,189,217,179,12,160,241,37,169,74,233,62,231,112,0,207,95,228,68,240,108,254,57,199,255,130,142,158,161,180,243,50,255,222,77,251,252,126,160,31,111,236,60,142,91,35,119,195,92,158,134,65,138,8,247,98,122,229,21,226,85,38,130,141,139,168,60,83,90,63,244,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,128,0,0,0,0,128,0,0,0,32,0,0,0,0,0,0,64,0,0,10,0,0,0,0,0,0,1,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,0,8,0,0,2,0,0,0,4,0,2,0,0,0,0,0,0,0,0,0,0,0,4,0,0,8,2,0,0,0,0,0,0,136,0,4,40,0,0,0,0,0,0,0,0,0,0,0,0,48,0,0,0,0,32,0,0,10,0,0,0,0,0,0,10,0,1,0,0,0,0,0,0,32,0,0,128,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,16,0,0,64,0,34,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,128,2,0,0,0,128,0,1,32,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,4,0,0,0,32,128,0,0,0,0,0,16,0,0,0,0,0,0,0,0,128,0,0,0,0,128,0,0,0,0,0,0,0,16,0,1,0,16,132,91,127,63,197,131,157,118,142,131,122,18,0,131,25,25,181,132,96,175,156,157,140,115,112,105,100,101,114,49,48,1,2,9,64,160,68,227,115,157,18,184,21,217,93,74,196,34,230,228,210,239,61,26,221,245,191,46,44,135,134,2,20,53,95,18,128,54,136,162,198,27,59,153,146,63,16],"proof":[[248,113,160,204,110,241,220,150,206,51,121,104,130,125,127,249,35,9,242,107,45,164,62,147,221,93,116,73,79,49,96,226,92,235,247,160,43,215,154,177,148,177,15,202,141,217,45,114,108,33,74,0,144,126,189,26,78,152,232,105,119,103,203,51,79,45,113,124,128,128,128,128,128,128,160,74,177,164,103,85,250,153,17,105,68,205,207,176,48,89,230,100,35,20,167,34,117,11,115,14,107,128,214,48,17,53,209,128,128,128,128,128,128,128,128],[249,2,47,48,185,2,43,249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0]]}"#;
-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(custodian_address);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,10,160,234,97,221,132,104,51,119,219,129,206,197,27,130,197,14,113,167,32,152,214,207,205,156,210,35,213,198,227,116,42,51,224,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,15,150,233,184,181,140,226,81,205,139,229,87,226,149,49,207,117,33,36,83,124,8,75,199,231,48,13,23,189,217,179,12,160,241,37,169,74,233,62,231,112,0,207,95,228,68,240,108,254,57,199,255,130,142,158,161,180,243,50,255,222,77,251,252,126,160,31,111,236,60,142,91,35,119,195,92,158,134,65,138,8,247,98,122,229,21,226,85,38,130,141,139,168,60,83,90,63,244,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,128,0,0,0,0,128,0,0,0,32,0,0,0,0,0,0,64,0,0,10,0,0,0,0,0,0,1,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,0,8,0,0,2,0,0,0,4,0,2,0,0,0,0,0,0,0,0,0,0,0,4,0,0,8,2,0,0,0,0,0,0,136,0,4,40,0,0,0,0,0,0,0,0,0,0,0,0,48,0,0,0,0,32,0,0,10,0,0,0,0,0,0,10,0,1,0,0,0,0,0,0,32,0,0,128,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,16,0,0,64,0,34,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,128,2,0,0,0,128,0,1,32,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,4,0,0,0,32,128,0,0,0,0,0,16,0,0,0,0,0,0,0,0,128,0,0,0,0,128,0,0,0,0,0,0,0,16,0,1,0,16,132,91,127,63,197,131,157,118,142,131,122,18,0,131,25,25,181,132,96,175,156,157,140,115,112,105,100,101,114,49,48,1,2,9,64,160,68,227,115,157,18,184,21,217,93,74,196,34,230,228,210,239,61,26,221,245,191,46,44,135,134,2,20,53,95,18,128,54,136,162,198,27,59,153,146,63,16],"proof":[[248,113,160,204,110,241,220,150,206,51,121,104,130,125,127,249,35,9,242,107,45,164,62,147,221,93,116,73,79,49,96,226,92,235,247,160,43,215,154,177,148,177,15,202,141,217,45,114,108,33,74,0,144,126,189,26,78,152,232,105,119,103,203,51,79,45,113,124,128,128,128,128,128,128,160,74,177,164,103,85,250,153,17,105,68,205,207,176,48,89,230,100,35,20,167,34,117,11,115,14,107,128,214,48,17,53,209,128,128,128,128,128,128,128,128],[249,2,47,48,185,2,43,249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,150,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -1044,14 +1093,16 @@ fn test_deposit_evm_amount_less_fee() {
         ERR_NOT_ENOUGH_BALANCE_FOR_FEE,
         "Expected failure as the deposited amount is less than fee, but deposit to Aurora succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, proof_str);
 }
 
 #[test]
 fn test_deposit_near_amount_zero_fee_non_zero() {
     let custodian_address = "73c8931CA2aD746d97a59A7ABDDa0a9205F7ffF9";
-    let (master_account, _) = init(custodian_address);
-    let proof = r#"{"log_index":0,"log_entry_data":[248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,244,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,244,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,10,160,47,76,8,45,83,192,115,218,108,188,181,117,148,40,254,44,169,118,92,188,207,7,122,246,133,75,100,184,134,128,91,12,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,225,211,110,129,173,98,101,150,55,116,11,30,26,161,226,8,234,249,90,46,245,112,225,68,76,26,215,135,27,181,140,22,160,229,44,239,5,102,141,42,118,174,163,144,225,90,152,120,60,150,25,144,217,154,234,25,69,35,226,103,149,188,127,81,106,160,177,89,93,76,113,24,117,182,174,52,148,6,239,129,151,18,222,56,245,9,232,80,7,129,118,118,108,72,76,247,238,101,185,1,0,1,4,200,10,0,0,0,0,8,0,32,0,128,3,1,0,0,145,4,33,72,8,0,2,0,128,0,18,64,26,38,0,4,16,8,1,136,65,40,32,0,0,1,72,0,2,0,128,0,64,0,0,48,0,32,0,0,0,0,192,0,100,9,0,12,0,16,0,0,1,2,8,8,0,8,12,128,64,0,192,2,0,0,64,2,68,129,0,128,1,0,0,128,128,68,0,64,64,32,0,67,0,32,0,0,41,20,1,0,16,40,0,16,16,32,0,0,0,128,0,0,0,64,48,4,8,8,0,0,0,0,66,32,64,0,0,48,0,16,8,1,64,0,0,16,32,0,33,32,0,0,128,0,2,2,128,0,0,192,0,2,40,0,0,0,0,0,1,0,67,1,0,131,32,6,8,0,0,8,96,128,0,0,0,0,12,0,0,0,65,2,160,2,64,0,2,4,32,0,128,0,1,34,0,105,0,160,0,32,18,32,16,1,0,0,0,20,0,32,0,20,0,96,128,0,16,0,0,64,16,2,192,1,0,4,32,0,32,130,2,0,0,32,0,0,0,4,64,12,64,0,0,4,0,0,1,132,93,96,3,163,131,157,117,205,131,122,18,0,131,113,87,104,132,96,175,145,182,140,115,112,105,100,101,114,49,48,1,2,9,64,160,179,183,88,73,3,20,234,255,8,238,6,186,173,204,149,149,235,233,232,35,158,194,53,246,218,39,221,246,90,7,34,255,136,176,36,100,161,146,27,98,29],"proof":[[248,177,160,93,101,188,48,5,53,36,126,41,0,92,130,188,117,104,230,178,29,27,194,22,86,212,235,193,20,241,42,157,88,117,205,160,141,83,180,197,22,126,217,34,74,50,114,118,42,157,161,171,8,158,98,92,183,124,137,130,211,1,106,44,222,37,13,32,160,62,131,146,138,69,63,89,98,140,64,187,93,207,160,0,4,134,154,205,47,168,231,136,249,129,230,137,29,3,210,67,173,160,76,91,176,245,81,3,198,111,175,230,185,70,220,111,189,88,15,154,173,107,239,121,185,13,159,197,61,37,231,252,22,200,128,128,128,128,160,13,246,139,212,38,202,103,201,31,80,247,136,186,58,17,52,66,119,115,128,23,123,59,166,177,68,79,182,9,242,60,106,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,244,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]}"#;
-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(custodian_address);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,244,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,244,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,10,160,47,76,8,45,83,192,115,218,108,188,181,117,148,40,254,44,169,118,92,188,207,7,122,246,133,75,100,184,134,128,91,12,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,225,211,110,129,173,98,101,150,55,116,11,30,26,161,226,8,234,249,90,46,245,112,225,68,76,26,215,135,27,181,140,22,160,229,44,239,5,102,141,42,118,174,163,144,225,90,152,120,60,150,25,144,217,154,234,25,69,35,226,103,149,188,127,81,106,160,177,89,93,76,113,24,117,182,174,52,148,6,239,129,151,18,222,56,245,9,232,80,7,129,118,118,108,72,76,247,238,101,185,1,0,1,4,200,10,0,0,0,0,8,0,32,0,128,3,1,0,0,145,4,33,72,8,0,2,0,128,0,18,64,26,38,0,4,16,8,1,136,65,40,32,0,0,1,72,0,2,0,128,0,64,0,0,48,0,32,0,0,0,0,192,0,100,9,0,12,0,16,0,0,1,2,8,8,0,8,12,128,64,0,192,2,0,0,64,2,68,129,0,128,1,0,0,128,128,68,0,64,64,32,0,67,0,32,0,0,41,20,1,0,16,40,0,16,16,32,0,0,0,128,0,0,0,64,48,4,8,8,0,0,0,0,66,32,64,0,0,48,0,16,8,1,64,0,0,16,32,0,33,32,0,0,128,0,2,2,128,0,0,192,0,2,40,0,0,0,0,0,1,0,67,1,0,131,32,6,8,0,0,8,96,128,0,0,0,0,12,0,0,0,65,2,160,2,64,0,2,4,32,0,128,0,1,34,0,105,0,160,0,32,18,32,16,1,0,0,0,20,0,32,0,20,0,96,128,0,16,0,0,64,16,2,192,1,0,4,32,0,32,130,2,0,0,32,0,0,0,4,64,12,64,0,0,4,0,0,1,132,93,96,3,163,131,157,117,205,131,122,18,0,131,113,87,104,132,96,175,145,182,140,115,112,105,100,101,114,49,48,1,2,9,64,160,179,183,88,73,3,20,234,255,8,238,6,186,173,204,149,149,235,233,232,35,158,194,53,246,218,39,221,246,90,7,34,255,136,176,36,100,161,146,27,98,29],"proof":[[248,177,160,93,101,188,48,5,53,36,126,41,0,92,130,188,117,104,230,178,29,27,194,22,86,212,235,193,20,241,42,157,88,117,205,160,141,83,180,197,22,126,217,34,74,50,114,118,42,157,161,171,8,158,98,92,183,124,137,130,211,1,106,44,222,37,13,32,160,62,131,146,138,69,63,89,98,140,64,187,93,207,160,0,4,134,154,205,47,168,231,136,249,129,230,137,29,3,210,67,173,160,76,91,176,245,81,3,198,111,175,230,185,70,220,111,189,88,15,154,173,107,239,121,185,13,159,197,61,37,231,252,22,200,128,128,128,128,160,13,246,139,212,38,202,103,201,31,80,247,136,186,58,17,52,66,119,115,128,23,123,59,166,177,68,79,182,9,242,60,106,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,2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+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -1065,14 +1116,16 @@ fn test_deposit_near_amount_zero_fee_non_zero() {
         ERR_NOT_ENOUGH_BALANCE_FOR_FEE,
         "Expected failure as the deposited amount is zero and the fee is not zero, but deposit to NEP-141 succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, proof_str);
 }
 
 #[test]
 fn test_deposit_evm_amount_zero_fee_non_zero() {
     let custodian_address = "73c8931CA2aD746d97a59A7ABDDa0a9205F7ffF9";
-    let (master_account, _) = init(custodian_address);
-    let proof = r#"{"log_index":0,"log_entry_data":[249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,174,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":1,"receipt_data":[249,2,41,1,131,1,110,54,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,174,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,21,160,60,128,9,36,168,69,207,249,164,88,177,15,74,221,137,160,110,246,3,133,209,132,169,179,31,86,142,216,160,11,162,137,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,28,255,226,5,233,121,118,187,157,30,192,6,245,34,35,96,168,147,83,224,160,182,206,231,252,255,115,166,11,152,156,84,169,204,36,0,94,3,17,113,103,104,252,225,161,115,85,74,227,104,249,187,232,160,211,106,68,136,2,141,5,14,201,111,68,218,251,84,103,176,66,10,190,123,58,119,216,141,192,197,222,181,211,87,117,192,160,162,200,112,106,166,13,220,187,223,164,251,102,104,106,40,84,17,101,93,131,125,204,193,62,96,110,167,214,54,41,154,191,185,1,0,0,40,72,0,32,0,0,0,0,0,0,5,128,2,0,8,0,128,144,136,0,34,0,0,32,1,0,0,64,16,0,10,0,16,8,28,0,17,9,0,0,0,0,72,0,16,4,0,0,0,0,128,2,18,0,0,0,0,1,16,0,36,0,1,1,32,8,0,2,1,0,64,64,0,0,8,0,16,0,40,2,0,13,0,2,8,0,0,0,8,0,0,16,0,4,16,36,0,52,8,130,128,8,0,0,0,0,10,0,2,40,64,0,34,32,2,0,2,0,0,0,0,0,48,4,32,128,0,32,0,0,2,96,0,0,0,0,64,10,0,33,64,0,0,0,66,0,32,0,0,192,138,0,0,0,70,0,129,128,0,66,32,0,0,16,64,0,0,0,0,97,0,34,0,6,0,0,32,8,0,1,200,128,48,0,41,128,0,128,0,224,0,0,0,0,2,0,64,0,148,0,0,32,72,8,0,96,0,36,128,25,48,33,0,128,16,0,0,4,2,128,4,32,144,0,20,0,0,0,16,2,0,4,0,2,8,0,0,128,0,16,0,0,128,0,0,16,0,128,0,72,16,0,129,0,80,132,91,116,53,37,131,157,118,157,131,122,18,0,131,48,97,222,132,96,175,157,102,151,214,131,1,10,2,132,103,101,116,104,134,103,111,49,46,49,54,133,108,105,110,117,120,160,218,71,54,233,233,153,85,103,64,10,4,159,150,224,130,134,111,78,188,224,102,166,96,148,216,222,134,254,219,185,88,110,136,87,173,68,252,252,248,190,64],"proof":[[248,177,160,174,171,108,131,83,47,244,139,23,122,146,226,84,189,175,114,176,131,196,80,85,155,220,172,151,31,138,121,78,34,1,37,160,104,209,167,107,221,53,22,163,251,61,251,80,40,239,108,253,251,47,253,90,163,103,58,194,173,111,232,90,174,223,154,156,160,185,232,110,109,245,242,193,69,113,230,64,155,37,7,166,98,0,174,149,27,3,242,254,162,87,27,39,206,191,90,97,39,160,156,171,231,120,50,202,239,195,248,47,226,150,143,78,94,254,151,195,12,90,54,253,126,104,200,94,222,173,155,24,75,214,128,128,128,128,160,77,84,120,31,175,114,100,6,171,254,190,44,236,141,143,126,33,139,92,41,101,166,10,135,52,237,241,45,228,121,210,252,128,128,128,128,128,128,128,128],[249,1,241,128,160,112,174,178,81,116,140,64,238,179,40,62,38,72,120,77,248,199,242,3,227,104,227,174,247,54,169,115,176,134,87,216,196,160,208,65,39,69,237,92,207,141,20,26,113,245,146,250,71,165,184,6,221,105,202,34,201,192,206,144,30,169,82,146,191,130,160,250,127,168,75,47,196,128,16,232,187,94,131,103,164,17,74,154,178,32,193,229,188,234,15,63,149,127,95,2,85,36,38,160,9,173,49,32,69,145,114,254,67,59,110,57,126,204,241,26,85,145,117,55,165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-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(custodian_address);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,174,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":1,"receipt_data":[249,2,41,1,131,1,110,54,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,174,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,21,160,60,128,9,36,168,69,207,249,164,88,177,15,74,221,137,160,110,246,3,133,209,132,169,179,31,86,142,216,160,11,162,137,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,28,255,226,5,233,121,118,187,157,30,192,6,245,34,35,96,168,147,83,224,160,182,206,231,252,255,115,166,11,152,156,84,169,204,36,0,94,3,17,113,103,104,252,225,161,115,85,74,227,104,249,187,232,160,211,106,68,136,2,141,5,14,201,111,68,218,251,84,103,176,66,10,190,123,58,119,216,141,192,197,222,181,211,87,117,192,160,162,200,112,106,166,13,220,187,223,164,251,102,104,106,40,84,17,101,93,131,125,204,193,62,96,110,167,214,54,41,154,191,185,1,0,0,40,72,0,32,0,0,0,0,0,0,5,128,2,0,8,0,128,144,136,0,34,0,0,32,1,0,0,64,16,0,10,0,16,8,28,0,17,9,0,0,0,0,72,0,16,4,0,0,0,0,128,2,18,0,0,0,0,1,16,0,36,0,1,1,32,8,0,2,1,0,64,64,0,0,8,0,16,0,40,2,0,13,0,2,8,0,0,0,8,0,0,16,0,4,16,36,0,52,8,130,128,8,0,0,0,0,10,0,2,40,64,0,34,32,2,0,2,0,0,0,0,0,48,4,32,128,0,32,0,0,2,96,0,0,0,0,64,10,0,33,64,0,0,0,66,0,32,0,0,192,138,0,0,0,70,0,129,128,0,66,32,0,0,16,64,0,0,0,0,97,0,34,0,6,0,0,32,8,0,1,200,128,48,0,41,128,0,128,0,224,0,0,0,0,2,0,64,0,148,0,0,32,72,8,0,96,0,36,128,25,48,33,0,128,16,0,0,4,2,128,4,32,144,0,20,0,0,0,16,2,0,4,0,2,8,0,0,128,0,16,0,0,128,0,0,16,0,128,0,72,16,0,129,0,80,132,91,116,53,37,131,157,118,157,131,122,18,0,131,48,97,222,132,96,175,157,102,151,214,131,1,10,2,132,103,101,116,104,134,103,111,49,46,49,54,133,108,105,110,117,120,160,218,71,54,233,233,153,85,103,64,10,4,159,150,224,130,134,111,78,188,224,102,166,96,148,216,222,134,254,219,185,88,110,136,87,173,68,252,252,248,190,64],"proof":[[248,177,160,174,171,108,131,83,47,244,139,23,122,146,226,84,189,175,114,176,131,196,80,85,155,220,172,151,31,138,121,78,34,1,37,160,104,209,167,107,221,53,22,163,251,61,251,80,40,239,108,253,251,47,253,90,163,103,58,194,173,111,232,90,174,223,154,156,160,185,232,110,109,245,242,193,69,113,230,64,155,37,7,166,98,0,174,149,27,3,242,254,162,87,27,39,206,191,90,97,39,160,156,171,231,120,50,202,239,195,248,47,226,150,143,78,94,254,151,195,12,90,54,253,126,104,200,94,222,173,155,24,75,214,128,128,128,128,160,77,84,120,31,175,114,100,6,171,254,190,44,236,141,143,126,33,139,92,41,101,166,10,135,52,237,241,45,228,121,210,252,128,128,128,128,128,128,128,128],[249,1,241,128,160,112,174,178,81,116,140,64,238,179,40,62,38,72,120,77,248,199,242,3,227,104,227,174,247,54,169,115,176,134,87,216,196,160,208,65,39,69,237,92,207,141,20,26,113,245,146,250,71,165,184,6,221,105,202,34,201,192,206,144,30,169,82,146,191,130,160,250,127,168,75,47,196,128,16,232,187,94,131,103,164,17,74,154,178,32,193,229,188,234,15,63,149,127,95,2,85,36,38,160,9,173,49,32,69,145,114,254,67,59,110,57,126,204,241,26,85,145,117,55,165,249,149,252,11,213,14,224,142,203,167,165,160,49,16,36,243,207,150,120,119,173,146,213,84,201,84,33,132,103,245,138,209,190,215,89,31,100,50,79,241,11,27,117,232,160,38,102,178,111,249,250,245,239,103,241,97,55,179,25,194,214,51,83,145,244,160,76,255,88,140,94,66,211,135,147,231,233,160,86,244,54,180,248,80,19,60,89,82,142,50,237,41,148,80,99,93,184,17,160,129,174,200,175,79,56,156,152,116,246,19,160,141,144,121,114,242,95,79,178,182,13,237,0,226,45,215,70,186,238,115,124,4,185,167,106,170,121,37,27,22,90,85,154,160,38,169,214,240,80,51,77,173,121,227,163,72,68,190,21,194,23,235,129,2,183,83,211,21,67,152,206,246,236,168,183,65,160,220,198,172,57,188,229,136,230,231,56,249,171,3,156,137,119,188,173,183,120,220,15,214,253,121,102,45,164,53,244,173,237,160,222,126,139,114,159,32,8,38,110,8,161,127,50,42,173,124,148,83,169,13,252,160,28,62,186,159,153,201,217,244,7,198,160,29,57,238,34,65,21,193,24,140,71,159,181,152,57,184,3,168,102,8,32,23,158,117,205,137,200,143,228,205,234,96,193,160,58,189,88,46,177,57,9,115,13,24,65,37,199,71,182,207,65,18,246,93,175,169,131,142,153,178,213,138,143,236,72,168,160,182,214,186,170,95,22,45,113,224,141,88,205,33,22,49,65,219,4,25,205,180,125,40,18,42,158,62,30,25,244,226,104,160,123,14,60,111,154,53,84,127,228,3,253,5,6,81,188,37,133,89,45,219,175,223,9,211,254,199,3,74,27,75,37,136,128],[249,2,48,32,185,2,44,249,2,41,1,131,1,110,54,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,174,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -1086,14 +1139,16 @@ fn test_deposit_evm_amount_zero_fee_non_zero() {
         ERR_NOT_ENOUGH_BALANCE_FOR_FEE,
         "Expected failure as the deposited amount is zero and the fee is not zero, but deposit to Aurora succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, proof_str);
 }
 
 #[test]
 fn test_deposit_near_amount_equal_fee_non_zero() {
     let custodian_address = "73c8931CA2aD746d97a59A7ABDDa0a9205F7ffF9";
-    let (master_account, _) = init(custodian_address);
-    let proof = r#"{"log_index":0,"log_entry_data":[248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,10,160,218,232,90,75,133,17,151,21,23,64,121,155,74,131,239,243,28,65,81,101,213,156,148,217,134,34,235,41,62,11,232,147,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,25,127,76,71,206,220,252,85,22,156,38,36,158,35,56,3,255,85,230,138,132,44,102,196,217,205,43,20,129,6,50,114,160,217,211,225,144,113,34,139,65,28,148,21,243,90,204,109,152,98,172,147,56,158,109,65,77,74,110,116,227,7,143,157,97,160,35,108,188,133,254,137,74,53,234,147,11,115,83,161,215,174,6,192,214,61,8,113,178,151,91,57,163,102,121,177,113,30,185,1,0,144,48,72,0,8,0,0,0,48,0,0,1,128,128,128,0,128,128,0,8,64,2,1,0,5,1,0,32,64,16,129,8,0,16,8,8,128,1,9,8,4,0,0,104,0,0,0,24,8,0,4,0,8,0,0,0,0,128,64,32,16,32,0,0,92,2,8,0,10,1,80,24,1,0,0,8,17,1,0,40,0,0,5,0,130,17,0,0,6,0,0,1,128,0,2,16,40,0,96,16,2,2,0,0,0,0,32,8,0,64,40,65,0,0,32,0,0,8,0,0,2,0,0,112,0,0,0,4,8,0,64,2,0,0,5,0,161,212,88,1,5,0,0,32,8,0,2,32,0,0,2,136,0,0,4,66,34,0,128,0,2,8,128,0,0,0,0,128,44,8,0,0,19,20,2,8,2,0,8,128,132,0,0,0,0,56,0,0,0,4,33,32,32,129,0,2,0,0,128,145,64,0,96,112,136,2,32,0,32,16,0,0,65,0,84,16,64,2,0,16,161,0,34,128,128,16,0,0,8,16,2,12,2,0,0,18,64,4,128,0,152,0,44,0,8,0,0,0,64,0,32,148,0,16,128,0,132,91,126,153,161,131,157,118,120,131,122,18,0,131,55,185,255,132,96,175,155,143,140,115,112,105,100,101,114,49,48,1,2,9,64,160,29,62,139,98,163,60,78,159,159,190,165,213,126,42,39,157,104,12,168,1,9,24,24,157,45,96,113,188,166,18,114,253,136,161,226,143,133,82,9,96,55],"proof":[[248,145,160,153,98,12,82,79,154,121,176,11,226,192,161,140,213,198,195,143,185,79,36,156,98,17,141,146,111,76,206,149,161,186,244,160,29,41,24,128,95,59,50,57,188,69,166,227,81,94,29,115,178,144,71,219,248,16,233,179,158,64,222,175,67,156,221,186,160,221,78,89,28,71,2,204,57,50,75,194,224,88,108,127,122,110,247,48,111,72,110,252,199,127,138,177,160,1,244,75,250,128,128,128,128,128,160,96,141,238,91,85,76,114,97,220,74,251,25,18,72,46,126,72,190,245,222,173,235,62,157,59,131,133,200,217,240,218,101,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]}"#;
-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(custodian_address);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"header_data":[249,2,10,160,218,232,90,75,133,17,151,21,23,64,121,155,74,131,239,243,28,65,81,101,213,156,148,217,134,34,235,41,62,11,232,147,160,29,204,77,232,222,199,93,122,171,133,181,103,182,204,212,26,211,18,69,27,148,138,116,19,240,161,66,253,64,212,147,71,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,25,127,76,71,206,220,252,85,22,156,38,36,158,35,56,3,255,85,230,138,132,44,102,196,217,205,43,20,129,6,50,114,160,217,211,225,144,113,34,139,65,28,148,21,243,90,204,109,152,98,172,147,56,158,109,65,77,74,110,116,227,7,143,157,97,160,35,108,188,133,254,137,74,53,234,147,11,115,83,161,215,174,6,192,214,61,8,113,178,151,91,57,163,102,121,177,113,30,185,1,0,144,48,72,0,8,0,0,0,48,0,0,1,128,128,128,0,128,128,0,8,64,2,1,0,5,1,0,32,64,16,129,8,0,16,8,8,128,1,9,8,4,0,0,104,0,0,0,24,8,0,4,0,8,0,0,0,0,128,64,32,16,32,0,0,92,2,8,0,10,1,80,24,1,0,0,8,17,1,0,40,0,0,5,0,130,17,0,0,6,0,0,1,128,0,2,16,40,0,96,16,2,2,0,0,0,0,32,8,0,64,40,65,0,0,32,0,0,8,0,0,2,0,0,112,0,0,0,4,8,0,64,2,0,0,5,0,161,212,88,1,5,0,0,32,8,0,2,32,0,0,2,136,0,0,4,66,34,0,128,0,2,8,128,0,0,0,0,128,44,8,0,0,19,20,2,8,2,0,8,128,132,0,0,0,0,56,0,0,0,4,33,32,32,129,0,2,0,0,128,145,64,0,96,112,136,2,32,0,32,16,0,0,65,0,84,16,64,2,0,16,161,0,34,128,128,16,0,0,8,16,2,12,2,0,0,18,64,4,128,0,152,0,44,0,8,0,0,0,64,0,32,148,0,16,128,0,132,91,126,153,161,131,157,118,120,131,122,18,0,131,55,185,255,132,96,175,155,143,140,115,112,105,100,101,114,49,48,1,2,9,64,160,29,62,139,98,163,60,78,159,159,190,165,213,126,42,39,157,104,12,168,1,9,24,24,157,45,96,113,188,166,18,114,253,136,161,226,143,133,82,9,96,55],"proof":[[248,145,160,153,98,12,82,79,154,121,176,11,226,192,161,140,213,198,195,143,185,79,36,156,98,17,141,146,111,76,206,149,161,186,244,160,29,41,24,128,95,59,50,57,188,69,166,227,81,94,29,115,178,144,71,219,248,16,233,179,158,64,222,175,67,156,221,186,160,221,78,89,28,71,2,204,57,50,75,194,224,88,108,127,122,110,247,48,111,72,110,252,199,127,138,177,160,1,244,75,250,128,128,128,128,128,160,96,141,238,91,85,76,114,97,220,74,251,25,18,72,46,126,72,190,245,222,173,235,62,157,59,131,133,200,217,240,218,101,128,128,128,128,128,128,128,128],[249,2,13,48,185,2,9,249,2,6,1,130,106,251,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,248,253,248,251,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,160,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,18,101,116,104,95,114,101,99,105,112,105,101,110,116,46,114,111,111,116,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
         "deposit",
@@ -1107,14 +1162,16 @@ fn test_deposit_near_amount_equal_fee_non_zero() {
         ERR_NOT_ENOUGH_BALANCE_FOR_FEE,
         "Expected failure as the deposited amount is equal to fee, but deposit to NEP-141 succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, proof_str);
 }
 
 #[test]
 fn test_deposit_evm_amount_equal_fee_non_zero() {
     let custodian_address = "73c8931CA2aD746d97a59A7ABDDa0a9205F7ffF9";
-    let (master_account, _) = init(custodian_address);
-    let proof = r#"{"log_index":0,"log_entry_data":[249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,10,160,40,73,143,87,82,108,249,199,149,251,138,16,158,32,40,191,70,185,139,157,146,47,76,134,132,2,138,15,163,195,164,23,160,4,220,65,246,216,41,193,152,14,191,243,6,120,77,198,249,10,186,90,192,38,182,89,163,180,7,115,149,220,146,135,121,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,140,129,164,138,92,240,141,148,58,223,100,113,117,102,163,205,129,110,47,12,254,66,40,98,179,170,247,163,117,111,198,112,160,154,8,216,215,130,120,77,117,89,130,236,187,91,119,167,212,252,114,44,157,54,25,178,246,190,125,110,255,187,224,200,236,160,40,108,11,169,34,110,94,30,9,115,148,248,253,252,64,245,150,237,108,188,197,225,88,28,139,188,249,78,249,118,101,180,185,1,0,128,32,72,128,0,0,0,0,0,0,32,1,128,2,32,0,2,130,0,0,2,51,0,0,0,1,0,0,66,16,0,10,0,144,8,12,0,1,13,32,0,0,0,72,0,0,0,0,0,64,0,0,32,2,0,0,2,0,0,0,0,32,0,0,0,0,40,0,34,1,0,0,8,0,0,8,0,0,0,46,0,2,5,0,2,0,0,8,64,1,32,0,0,0,0,16,36,96,32,8,66,2,0,128,0,1,0,8,0,2,40,64,4,0,40,2,0,2,13,32,0,0,192,176,4,76,128,4,32,128,0,10,0,0,0,0,4,64,42,136,1,0,0,0,0,0,4,160,1,0,128,136,4,0,0,66,0,1,129,0,2,0,0,16,0,0,0,0,0,0,64,0,50,64,2,0,0,0,8,0,1,8,1,160,0,42,128,0,128,16,160,0,192,0,0,2,0,96,16,144,0,32,48,64,8,128,32,0,164,16,0,32,1,1,0,16,0,0,5,2,192,0,32,128,2,16,0,8,0,18,2,0,0,16,0,0,0,0,128,0,80,0,0,128,0,32,0,0,0,0,0,16,0,1,0,16,132,91,150,244,27,131,157,118,173,131,122,18,0,131,40,221,54,132,96,175,158,25,140,115,112,105,100,101,114,49,48,1,2,9,64,160,218,157,103,144,72,1,176,23,70,255,185,190,128,163,131,210,184,249,29,138,99,94,110,182,239,251,248,20,139,58,221,102,136,127,48,25,31,42,252,69,90],"proof":[[248,145,160,242,107,136,177,199,137,149,29,37,76,252,130,24,241,231,253,164,161,49,123,187,119,248,194,41,74,148,86,89,189,140,122,160,221,253,158,175,54,102,36,195,73,91,187,167,57,197,110,107,81,39,3,67,139,234,202,103,171,85,168,245,23,151,146,101,160,240,166,241,60,58,19,14,113,70,156,230,223,214,171,111,192,135,200,157,176,100,11,127,9,6,211,142,63,158,86,97,87,128,128,128,128,128,160,247,26,205,35,167,94,67,103,248,63,247,181,235,154,151,144,26,0,253,18,81,231,65,62,46,101,62,205,117,218,221,122,128,128,128,128,128,128,128,128],[249,2,47,48,185,2,43,249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28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-    let proof: Proof = serde_json::from_str(proof).unwrap();
+    let (master_account, contract) = init(custodian_address);
+    let proof_str = r#"{"log_index":0,"log_entry_data":[249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"receipt_index":0,"receipt_data":[249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0],"header_data":[249,2,10,160,40,73,143,87,82,108,249,199,149,251,138,16,158,32,40,191,70,185,139,157,146,47,76,134,132,2,138,15,163,195,164,23,160,4,220,65,246,216,41,193,152,14,191,243,6,120,77,198,249,10,186,90,192,38,182,89,163,180,7,115,149,220,146,135,121,148,124,28,230,160,8,239,64,193,62,78,177,68,166,204,116,240,224,174,172,126,160,140,129,164,138,92,240,141,148,58,223,100,113,117,102,163,205,129,110,47,12,254,66,40,98,179,170,247,163,117,111,198,112,160,154,8,216,215,130,120,77,117,89,130,236,187,91,119,167,212,252,114,44,157,54,25,178,246,190,125,110,255,187,224,200,236,160,40,108,11,169,34,110,94,30,9,115,148,248,253,252,64,245,150,237,108,188,197,225,88,28,139,188,249,78,249,118,101,180,185,1,0,128,32,72,128,0,0,0,0,0,0,32,1,128,2,32,0,2,130,0,0,2,51,0,0,0,1,0,0,66,16,0,10,0,144,8,12,0,1,13,32,0,0,0,72,0,0,0,0,0,64,0,0,32,2,0,0,2,0,0,0,0,32,0,0,0,0,40,0,34,1,0,0,8,0,0,8,0,0,0,46,0,2,5,0,2,0,0,8,64,1,32,0,0,0,0,16,36,96,32,8,66,2,0,128,0,1,0,8,0,2,40,64,4,0,40,2,0,2,13,32,0,0,192,176,4,76,128,4,32,128,0,10,0,0,0,0,4,64,42,136,1,0,0,0,0,0,4,160,1,0,128,136,4,0,0,66,0,1,129,0,2,0,0,16,0,0,0,0,0,0,64,0,50,64,2,0,0,0,8,0,1,8,1,160,0,42,128,0,128,16,160,0,192,0,0,2,0,96,16,144,0,32,48,64,8,128,32,0,164,16,0,32,1,1,0,16,0,0,5,2,192,0,32,128,2,16,0,8,0,18,2,0,0,16,0,0,0,0,128,0,80,0,0,128,0,32,0,0,0,0,0,16,0,1,0,16,132,91,150,244,27,131,157,118,173,131,122,18,0,131,40,221,54,132,96,175,158,25,140,115,112,105,100,101,114,49,48,1,2,9,64,160,218,157,103,144,72,1,176,23,70,255,185,190,128,163,131,210,184,249,29,138,99,94,110,182,239,251,248,20,139,58,221,102,136,127,48,25,31,42,252,69,90],"proof":[[248,145,160,242,107,136,177,199,137,149,29,37,76,252,130,24,241,231,253,164,161,49,123,187,119,248,194,41,74,148,86,89,189,140,122,160,221,253,158,175,54,102,36,195,73,91,187,167,57,197,110,107,81,39,3,67,139,234,202,103,171,85,168,245,23,151,146,101,160,240,166,241,60,58,19,14,113,70,156,230,223,214,171,111,192,135,200,157,176,100,11,127,9,6,211,142,63,158,86,97,87,128,128,128,128,128,160,247,26,205,35,167,94,67,103,248,63,247,181,235,154,151,144,26,0,253,18,81,231,65,62,46,101,62,205,117,218,221,122,128,128,128,128,128,128,128,128],[249,2,47,48,185,2,43,249,2,40,1,130,121,119,185,1,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,249,1,30,249,1,27,148,115,200,147,28,162,173,116,109,151,165,154,122,189,218,10,146,5,247,255,249,248,66,160,209,66,67,156,39,142,37,218,217,165,7,102,241,83,208,227,210,215,191,43,209,111,194,120,28,75,212,148,178,177,90,157,160,0,0,0,0,0,0,0,0,0,0,0,0,121,24,63,219,216,14,45,138,234,26,202,162,246,123,251,138,54,212,10,141,184,192,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,188,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,59,101,116,104,95,99,111,110,110,101,99,116,111,114,46,114,111,111,116,58,56,57,49,66,50,55,52,57,50,51,56,66,50,55,102,70,53,56,101,57,53,49,48,56,56,101,53,53,98,48,52,100,101,55,49,68,99,51,55,52,0,0,0,0,0]]}"#;
+    let proof: Proof = serde_json::from_str(proof_str).unwrap();
 
     let res = master_account.call(
         CONTRACT_ACC.to_string(),
@@ -1129,6 +1186,8 @@ fn test_deposit_evm_amount_equal_fee_non_zero() {
         ERR_NOT_ENOUGH_BALANCE_FOR_FEE,
         "Expected failure as the deposited amount is equal to fee, but deposit to Aurora succeeded",
     );
+
+    assert_proof_was_not_used(&contract, CONTRACT_ACC, proof_str);
 }
 
 fn assert_execution_status_failure(