diff --git a/crates/client/entropy_metadata.scale b/crates/client/entropy_metadata.scale
index cd780ce01..fc0b8305a 100644
Binary files a/crates/client/entropy_metadata.scale and b/crates/client/entropy_metadata.scale differ
diff --git a/crates/threshold-signature-server/src/attestation/api.rs b/crates/threshold-signature-server/src/attestation/api.rs
index 081c69c1f..366e81a79 100644
--- a/crates/threshold-signature-server/src/attestation/api.rs
+++ b/crates/threshold-signature-server/src/attestation/api.rs
@@ -24,11 +24,11 @@ use crate::{
     AppState,
 };
 use axum::{body::Bytes, extract::State, http::StatusCode};
-use entropy_kvdb::kv_manager::{KvManager};
+use entropy_kvdb::kv_manager::KvManager;
 use entropy_shared::OcwMessageAttestationRequest;
 use parity_scale_codec::Decode;
 use sp_core::Pair;
-use subxt::{tx::PairSigner};
+use subxt::tx::PairSigner;
 use x25519_dalek::StaticSecret;
 
 /// HTTP POST endpoint to initiate a TDX attestation.
diff --git a/crates/threshold-signature-server/src/attestation/tests.rs b/crates/threshold-signature-server/src/attestation/tests.rs
index f9883fcca..54ee6de57 100644
--- a/crates/threshold-signature-server/src/attestation/tests.rs
+++ b/crates/threshold-signature-server/src/attestation/tests.rs
@@ -13,15 +13,22 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 use crate::{
+    attestation::api::validate_new_attest,
     chain_api::{entropy, get_api, get_rpc},
     helpers::{
         substrate::query_chain,
-        tests::{initialize_test_logger, run_to_block, spawn_testing_validators, ChainSpecType},
+        tests::{
+            initialize_test_logger, run_to_block, setup_client, spawn_testing_validators,
+            ChainSpecType,
+        },
     },
+    launch::LATEST_BLOCK_NUMBER_ATTEST,
 };
 use entropy_kvdb::clean_tests;
+use entropy_shared::OcwMessageAttestationRequest;
 use entropy_testing_utils::{
-    constants::TSS_ACCOUNTS, substrate_context::test_node_process_stationary,
+    constants::TSS_ACCOUNTS,
+    substrate_context::{test_context_stationary, test_node_process_stationary},
 };
 use serial_test::serial;
 
@@ -64,3 +71,31 @@ async fn test_attest() {
     }
     panic!("Waited 10 blocks and attestation is still pending");
 }
+
+#[tokio::test]
+#[serial]
+async fn test_attest_validation_fail() {
+    initialize_test_logger().await;
+    clean_tests();
+
+    let cxt = test_context_stationary().await;
+    let rpc = get_rpc(&cxt.node_proc.ws_url).await.unwrap();
+    let kv = setup_client().await;
+
+    let block_number = rpc.chain_get_header(None).await.unwrap().unwrap().number + 1;
+    let ocw_message = OcwMessageAttestationRequest { tss_account_ids: vec![], block_number };
+    let err_stale_data =
+        validate_new_attest(block_number, &ocw_message, &kv).await.map_err(|e| e.to_string());
+    assert_eq!(err_stale_data, Err("Data is stale".to_string()));
+    run_to_block(&rpc, block_number).await;
+
+    // manipulates kvdb to get to repeated data error
+    kv.kv().delete(LATEST_BLOCK_NUMBER_ATTEST).await.unwrap();
+    let reservation = kv.kv().reserve_key(LATEST_BLOCK_NUMBER_ATTEST.to_string()).await.unwrap();
+    kv.kv().put(reservation, (block_number + 5).to_be_bytes().to_vec()).await.unwrap();
+
+    let err_repeated_data =
+        validate_new_attest(block_number, &ocw_message, &kv).await.map_err(|e| e.to_string());
+    assert_eq!(err_repeated_data, Err("Data is repeated".to_string()));
+    clean_tests();
+}
diff --git a/crates/threshold-signature-server/src/user/tests.rs b/crates/threshold-signature-server/src/user/tests.rs
index 7366c2fc5..111efb54f 100644
--- a/crates/threshold-signature-server/src/user/tests.rs
+++ b/crates/threshold-signature-server/src/user/tests.rs
@@ -29,7 +29,7 @@ use entropy_protocol::{
 };
 use entropy_shared::{
     HashingAlgorithm, DAVE_VERIFYING_KEY, DEFAULT_VERIFYING_KEY_NOT_REGISTERED, DEVICE_KEY_HASH,
-    EVE_VERIFYING_KEY, NETWORK_PARENT_KEY,
+    NETWORK_PARENT_KEY,
 };
 use entropy_testing_utils::{
     chain_api::{