diff --git a/crates/testing-utils/src/constants.rs b/crates/testing-utils/src/constants.rs
index 8a377e462..ada142829 100644
--- a/crates/testing-utils/src/constants.rs
+++ b/crates/testing-utils/src/constants.rs
@@ -32,6 +32,8 @@ lazy_static! {
         hex!["2cbc68e8bf0fbc1c28c282d1263fc9d29267dc12a1044fb730e8b65abc37524c"].into(),
         // Charlie - from DEFAULT_CHARLIE_MNEMONIC in entropy_tss::helpers::launch
         hex!["946140d3d5ddb980c74ffa1bb64353b5523d2d77cdf3dc617fd63de9d3b66338"].into(),
+        // Dave - from DEFAULT_DAVE_MNEMONIC in entropy_tss::helpers::launch
+        hex!["0a9054ef6b6b8ad0dd2c89895b2515583f2fbf1edced68e7328ae456d86b9402"].into(),
     ];
 
     // See entropy_tss::helpers::validator::get_signer_and_x25519_secret for how these are derived
@@ -57,6 +59,13 @@ lazy_static! {
         ]
         .try_into()
         .unwrap(),
+        // Dave - from DEFAULT_DAVE_MNEMONIC in entropy_tss::helpers::launch
+        vec![
+            165, 202, 97, 104, 222, 190, 168, 183, 231, 63, 209, 233, 19, 185, 187, 200, 10, 29, 102,
+            240, 39, 50, 140, 15, 124, 112, 94, 121, 44, 182, 40, 71
+        ]
+        .try_into()
+        .unwrap()
     ];
 }
 
diff --git a/crates/testing-utils/src/helpers.rs b/crates/testing-utils/src/helpers.rs
new file mode 100644
index 000000000..60194a153
--- /dev/null
+++ b/crates/testing-utils/src/helpers.rs
@@ -0,0 +1,54 @@
+// Copyright (C) 2023 Entropy Cryptography Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// 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::{
+    chain_api::{get_api, get_rpc, EntropyConfig},
+    spawn_testing_validators,
+    substrate_context::{test_context_stationary, test_node_process_testing_state},
+    ChainSpecType,
+};
+use entropy_protocol::PartyId;
+use subxt::{backend::legacy::LegacyRpcMethods, OnlineClient};
+
+/// A helper for setting up tests which starts both a set of TS servers and a chain node and returns
+/// the chain API as well as IP addresses and PartyId of the started validators
+pub async fn spawn_tss_nodes_and_start_chain(
+    add_parent_key: bool,
+    chain_spec_type: ChainSpecType,
+) -> (OnlineClient<EntropyConfig>, LegacyRpcMethods<EntropyConfig>, Vec<String>, Vec<PartyId>) {
+    let (validator_ips, validator_ids) =
+        spawn_testing_validators(add_parent_key, chain_spec_type.clone()).await;
+
+    let (api, rpc) = match chain_spec_type {
+        ChainSpecType::Development => {
+            let substrate_context = test_context_stationary().await;
+            (
+                get_api(&substrate_context.node_proc.ws_url).await.unwrap(),
+                get_rpc(&substrate_context.node_proc.ws_url).await.unwrap(),
+            )
+        },
+        ChainSpecType::Integration => {
+            // Here we need to use `--chain=integration-tests` and force authoring otherwise we won't be
+            // able to get our chain in the right state to be jump started.
+            let force_authoring = true;
+            let substrate_context = test_node_process_testing_state(force_authoring).await;
+            (
+                get_api(&substrate_context.ws_url).await.unwrap(),
+                get_rpc(&substrate_context.ws_url).await.unwrap(),
+            )
+        },
+    };
+    (api, rpc, validator_ips, validator_ids)
+}
diff --git a/crates/testing-utils/src/lib.rs b/crates/testing-utils/src/lib.rs
index 8da2a5cda..22329cb1c 100644
--- a/crates/testing-utils/src/lib.rs
+++ b/crates/testing-utils/src/lib.rs
@@ -19,10 +19,11 @@ extern crate lazy_static;
 pub use entropy_tss::chain_api;
 pub mod constants;
 pub mod create_test_keyshares;
+pub mod helpers;
 mod node_proc;
 pub mod substrate_context;
 pub use entropy_tss::helpers::tests::{
-    jump_start_network_with_signer as jump_start_network, spawn_testing_validators,
+    jump_start_network_with_signer as jump_start_network, spawn_testing_validators, ChainSpecType,
 };
 pub use node_proc::TestNodeProcess;
 pub use substrate_context::*;
diff --git a/crates/threshold-signature-server/src/attestation/tests.rs b/crates/threshold-signature-server/src/attestation/tests.rs
index fb31117b9..6dc8a495c 100644
--- a/crates/threshold-signature-server/src/attestation/tests.rs
+++ b/crates/threshold-signature-server/src/attestation/tests.rs
@@ -16,7 +16,7 @@ use crate::{
     chain_api::{entropy, get_api, get_rpc},
     helpers::{
         substrate::query_chain,
-        tests::{initialize_test_logger, run_to_block, spawn_testing_validators},
+        tests::{initialize_test_logger, run_to_block, spawn_testing_validators, ChainSpecType},
     },
 };
 use entropy_kvdb::clean_tests;
@@ -32,7 +32,9 @@ async fn test_attest() {
     clean_tests();
 
     let cxt = test_node_process_stationary().await;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(false).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(false, ChainSpecType::Integration).await;
+
     let api = get_api(&cxt.ws_url).await.unwrap();
     let rpc = get_rpc(&cxt.ws_url).await.unwrap();
 
diff --git a/crates/threshold-signature-server/src/helpers/tests.rs b/crates/threshold-signature-server/src/helpers/tests.rs
index e684e491d..e754a8f88 100644
--- a/crates/threshold-signature-server/src/helpers/tests.rs
+++ b/crates/threshold-signature-server/src/helpers/tests.rs
@@ -42,7 +42,6 @@ use entropy_kvdb::{encrypted_sled::PasswordMethod, get_db_path, kv_manager::KvMa
 use entropy_protocol::PartyId;
 use entropy_shared::{DAVE_VERIFYING_KEY, EVE_VERIFYING_KEY, NETWORK_PARENT_KEY};
 use std::time::Duration;
-
 use subxt::{
     backend::legacy::LegacyRpcMethods, ext::sp_core::sr25519, tx::PairSigner,
     utils::AccountId32 as SubxtAccountId32, Config, OnlineClient,
@@ -119,10 +118,29 @@ pub async fn create_clients(
     (app, kv_store)
 }
 
-/// Spawn 3 TSS nodes with pre-stored keyshares
-pub async fn spawn_testing_validators(add_parent_key: bool) -> (Vec<String>, Vec<PartyId>) {
+/// A way to specify which chainspec to use in testing
+#[derive(Clone, PartialEq)]
+pub enum ChainSpecType {
+    /// The development chainspec, which has 3 TSS nodes
+    Development,
+    /// The integration test chainspec, which has 4 TSS nodes
+    Integration,
+}
+
+/// Spawn either 3 or 4 TSS nodes depending on chain configuration, adding pre-stored keyshares if
+/// desired
+pub async fn spawn_testing_validators(
+    add_parent_key: bool,
+    chain_spec_type: ChainSpecType,
+) -> (Vec<String>, Vec<PartyId>) {
+    let add_fourth_server = chain_spec_type == ChainSpecType::Integration;
+
     // spawn threshold servers
-    let ports = [3001i64, 3002, 3003];
+    let mut ports = vec![3001i64, 3002, 3003];
+
+    if add_fourth_server {
+        ports.push(3004);
+    }
 
     let (alice_axum, alice_kv) =
         create_clients("validator1".to_string(), vec![], vec![], &Some(ValidatorName::Alice)).await;
@@ -143,11 +161,12 @@ pub async fn spawn_testing_validators(add_parent_key: bool) -> (Vec<String>, Vec
         *get_signer(&charlie_kv).await.unwrap().account_id().clone().as_ref(),
     ));
 
-    let ids = vec![alice_id, bob_id, charlie_id];
+    let mut ids = vec![alice_id, bob_id, charlie_id];
 
     put_keyshares_in_db("alice", alice_kv, add_parent_key).await;
     put_keyshares_in_db("bob", bob_kv, add_parent_key).await;
     put_keyshares_in_db("charlie", charlie_kv, add_parent_key).await;
+    // Don't give dave keyshares as dave is not initially in the signing committee
 
     let listener_alice = tokio::net::TcpListener::bind(format!("0.0.0.0:{}", ports[0]))
         .await
@@ -170,6 +189,23 @@ pub async fn spawn_testing_validators(add_parent_key: bool) -> (Vec<String>, Vec
         axum::serve(listener_charlie, charlie_axum).await.unwrap();
     });
 
+    if add_fourth_server {
+        let (dave_axum, dave_kv) =
+            create_clients("validator4".to_string(), vec![], vec![], &Some(ValidatorName::Dave))
+                .await;
+
+        let listener_dave = tokio::net::TcpListener::bind(format!("0.0.0.0:{}", ports[3]))
+            .await
+            .expect("Unable to bind to given server address.");
+        tokio::spawn(async move {
+            axum::serve(listener_dave, dave_axum).await.unwrap();
+        });
+        let dave_id = PartyId::new(SubxtAccountId32(
+            *get_signer(&dave_kv).await.unwrap().account_id().clone().as_ref(),
+        ));
+        ids.push(dave_id);
+    }
+
     tokio::time::sleep(Duration::from_secs(1)).await;
 
     let ips = ports.iter().map(|port| format!("127.0.0.1:{port}")).collect();
diff --git a/crates/threshold-signature-server/src/signing_client/tests.rs b/crates/threshold-signature-server/src/signing_client/tests.rs
index b4a9ee4ff..63cc8f6b3 100644
--- a/crates/threshold-signature-server/src/signing_client/tests.rs
+++ b/crates/threshold-signature-server/src/signing_client/tests.rs
@@ -20,7 +20,7 @@ use crate::{
         launch::LATEST_BLOCK_NUMBER_PROACTIVE_REFRESH,
         tests::{
             initialize_test_logger, run_to_block, setup_client, spawn_testing_validators,
-            unsafe_get,
+            unsafe_get, ChainSpecType,
         },
     },
 };
@@ -45,7 +45,8 @@ async fn test_proactive_refresh() {
     clean_tests();
     let _cxt = test_node_process_testing_state(false).await;
 
-    let (validator_ips, _ids) = spawn_testing_validators(false).await;
+    let (validator_ips, _ids) = spawn_testing_validators(false, ChainSpecType::Integration).await;
+    let signing_committee_ips = &validator_ips[..3].to_vec();
 
     let client = reqwest::Client::new();
 
@@ -78,14 +79,14 @@ async fn test_proactive_refresh() {
     };
 
     let test_fail_incorrect_data =
-        submit_transaction_requests(validator_ips.clone(), ocw_message.clone()).await;
+        submit_transaction_requests(signing_committee_ips.clone(), ocw_message.clone()).await;
 
     for res in test_fail_incorrect_data {
         assert_eq!(res.unwrap().text().await.unwrap(), "Proactive Refresh data incorrect");
     }
     ocw_message.validators_info[0].x25519_public_key = X25519_PUBLIC_KEYS[0];
     let test_user_res =
-        submit_transaction_requests(validator_ips.clone(), ocw_message.clone()).await;
+        submit_transaction_requests(signing_committee_ips.clone(), ocw_message.clone()).await;
 
     for res in test_user_res {
         assert_eq!(res.unwrap().text().await.unwrap(), "");
@@ -104,7 +105,7 @@ async fn test_proactive_refresh() {
     ocw_message.validators_info[2].tss_account = alice.public().encode();
 
     let test_user_res_not_in_group =
-        submit_transaction_requests(validator_ips.clone(), ocw_message.clone()).await;
+        submit_transaction_requests(signing_committee_ips.clone(), ocw_message.clone()).await;
     for res in test_user_res_not_in_group {
         assert_eq!(
             res.unwrap().text().await.unwrap(),
diff --git a/crates/threshold-signature-server/src/user/tests.rs b/crates/threshold-signature-server/src/user/tests.rs
index 59d41f3d8..7ae0cd3b6 100644
--- a/crates/threshold-signature-server/src/user/tests.rs
+++ b/crates/threshold-signature-server/src/user/tests.rs
@@ -122,7 +122,7 @@ use crate::{
         substrate::{get_oracle_data, query_chain, submit_transaction},
         tests::{
             create_clients, initialize_test_logger, jump_start_network_with_signer, remove_program,
-            run_to_block, setup_client, spawn_testing_validators, unsafe_get,
+            run_to_block, setup_client, spawn_testing_validators, unsafe_get, ChainSpecType,
         },
         user::compute_hash,
         validator::get_signer_and_x25519_secret_from_mnemonic,
@@ -169,7 +169,8 @@ async fn test_signature_requests_fail_on_different_conditions() {
     let two = AccountKeyring::Two;
 
     let add_parent_key_to_kvdb = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key_to_kvdb).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key_to_kvdb, ChainSpecType::Integration).await;
 
     // Here we need to use `--chain=integration-tests` and force authoring otherwise we won't be
     // able to get our chain in the right state to be jump started.
@@ -326,7 +327,8 @@ async fn signature_request_with_derived_account_works() {
     let charlie = AccountKeyring::Charlie;
 
     let add_parent_key_to_kvdb = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key_to_kvdb).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key_to_kvdb, ChainSpecType::Integration).await;
 
     // Here we need to use `--chain=integration-tests` and force authoring otherwise we won't be
     // able to get our chain in the right state to be jump started.
@@ -396,7 +398,8 @@ async fn test_signing_fails_if_wrong_participants_are_used() {
     let one = AccountKeyring::Dave;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
@@ -470,7 +473,8 @@ async fn test_request_limit_are_updated_during_signing() {
     let two = AccountKeyring::Two;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
@@ -592,7 +596,8 @@ async fn test_fails_to_sign_if_non_signing_group_participants_are_used() {
     let two = AccountKeyring::Two;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
@@ -703,7 +708,8 @@ async fn test_program_with_config() {
     let two = AccountKeyring::Two;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
@@ -790,7 +796,8 @@ async fn test_jumpstart_network() {
     let alice = AccountKeyring::Alice;
 
     let cxt = test_context_stationary().await;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(false).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(false, ChainSpecType::Development).await;
     let api = get_api(&cxt.node_proc.ws_url).await.unwrap();
     let rpc = get_rpc(&cxt.node_proc.ws_url).await.unwrap();
 
@@ -1002,7 +1009,8 @@ async fn test_fail_infinite_program() {
     let two = AccountKeyring::Two;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
@@ -1085,7 +1093,8 @@ async fn test_device_key_proxy() {
     let two = AccountKeyring::Two;
 
     let add_parent_key_to_kvdb = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key_to_kvdb).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key_to_kvdb, ChainSpecType::Integration).await;
 
     // Here we need to use `--chain=integration-tests` and force authoring otherwise we won't be
     // able to get our chain in the right state to be jump started.
@@ -1223,7 +1232,8 @@ async fn test_faucet() {
     let two = AccountKeyring::Eve;
     let alice = AccountKeyring::Alice;
 
-    let (validator_ips, _validator_ids) = spawn_testing_validators(false).await;
+    let (validator_ips, _validator_ids) =
+        spawn_testing_validators(false, ChainSpecType::Development).await;
     let substrate_context = test_node_process_testing_state(true).await;
     let entropy_api = get_api(&substrate_context.ws_url).await.unwrap();
     let rpc = get_rpc(&substrate_context.ws_url).await.unwrap();
@@ -1395,7 +1405,8 @@ async fn test_new_registration_flow() {
     let charlie = AccountKeyring::Charlie;
 
     let add_parent_key_to_kvdb = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key_to_kvdb).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key_to_kvdb, ChainSpecType::Integration).await;
 
     // Here we need to use `--chain=integration-tests` and force authoring otherwise we won't be
     // able to get our chain in the right state to be jump started.
diff --git a/crates/threshold-signature-server/src/validator/tests.rs b/crates/threshold-signature-server/src/validator/tests.rs
index 07854ac49..bb8057793 100644
--- a/crates/threshold-signature-server/src/validator/tests.rs
+++ b/crates/threshold-signature-server/src/validator/tests.rs
@@ -14,19 +14,27 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 use super::api::{check_balance_for_fees, check_forbidden_key};
 use crate::{
-    chain_api::{get_api, get_rpc},
     helpers::{
         launch::{FORBIDDEN_KEYS, LATEST_BLOCK_NUMBER_RESHARE},
         tests::{
             initialize_test_logger, run_to_block, setup_client, spawn_testing_validators,
-            unsafe_get,
+            unsafe_get, ChainSpecType,
         },
     },
+    user::tests::jump_start_network,
     validator::{
         api::{is_signer_or_delete_parent_key, prune_old_holders, validate_new_reshare},
         errors::ValidatorErr,
     },
 };
+use entropy_client as test_client;
+use entropy_client::{
+    chain_api::{
+        entropy::runtime_types::bounded_collections::bounded_vec::BoundedVec,
+        entropy::runtime_types::pallet_registry::pallet::ProgramInstance, get_api, get_rpc,
+    },
+    Hasher,
+};
 use entropy_kvdb::{
     clean_tests,
     kv_manager::helpers::{deserialize, serialize},
@@ -35,6 +43,9 @@ use entropy_protocol::KeyShareWithAuxInfo;
 use entropy_shared::{
     OcwMessageReshare, MIN_BALANCE, NETWORK_PARENT_KEY, TEST_RESHARE_BLOCK_NUMBER,
 };
+use entropy_testing_utils::constants::{
+    AUXILARY_DATA_SHOULD_SUCCEED, PREIMAGE_SHOULD_SUCCEED, TEST_PROGRAM_WASM_BYTECODE,
+};
 use entropy_testing_utils::{
     constants::{ALICE_STASH_ADDRESS, RANDOM_ACCOUNT},
     substrate_context::{test_node_process_testing_state, testing_context},
@@ -43,7 +54,10 @@ use entropy_testing_utils::{
 use futures::future::join_all;
 use parity_scale_codec::Encode;
 use serial_test::serial;
+use sp_core::Pair;
 use sp_keyring::AccountKeyring;
+use subxt::utils::AccountId32;
+use synedrion::k256::ecdsa::VerifyingKey;
 
 #[tokio::test]
 #[serial]
@@ -51,33 +65,34 @@ async fn test_reshare() {
     initialize_test_logger().await;
     clean_tests();
 
-    let alice = AccountKeyring::AliceStash;
+    let dave = AccountKeyring::DaveStash;
 
     let cxt = test_node_process_testing_state(true).await;
 
     let add_parent_key_to_kvdb = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key_to_kvdb).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key_to_kvdb, ChainSpecType::Integration).await;
 
-    let validator_ports = vec![3001, 3002, 3003];
+    let validator_ports = vec![3001, 3002, 3003, 3004];
     let api = get_api(&cxt.ws_url).await.unwrap();
     let rpc = get_rpc(&cxt.ws_url).await.unwrap();
 
     let client = reqwest::Client::new();
     let mut key_shares_before = vec![];
-    for port in &validator_ports {
+    for port in &validator_ports[..3] {
         key_shares_before.push(unsafe_get(&client, hex::encode(NETWORK_PARENT_KEY), *port).await);
     }
 
-    crate::user::tests::jump_start_network(&api, &rpc).await;
+    jump_start_network(&api, &rpc).await;
 
     let block_number = TEST_RESHARE_BLOCK_NUMBER;
     let onchain_reshare_request =
-        OcwMessageReshare { new_signer: alice.public().encode(), block_number };
+        OcwMessageReshare { new_signer: dave.public().encode(), block_number };
 
     run_to_block(&rpc, block_number + 1).await;
 
     let response_results = join_all(
-        validator_ports
+        validator_ports[1..]
             .iter()
             .map(|port| {
                 client
@@ -92,7 +107,7 @@ async fn test_reshare() {
         assert_eq!(response_result.unwrap().text().await.unwrap(), "");
     }
 
-    for i in 0..validator_ports.len() {
+    for i in 0..3 {
         let (key_share_before, aux_info_before): KeyShareWithAuxInfo =
             deserialize(&key_shares_before[i]).unwrap();
 
@@ -105,7 +120,11 @@ async fn test_reshare() {
         assert_eq!(serialize(&key_share_before).unwrap(), serialize(&key_share_after).unwrap());
         // Check aux info has not yet changed
         assert_eq!(serialize(&aux_info_before).unwrap(), serialize(&aux_info_after).unwrap());
+    }
 
+    // We add one here because after the reshare the siging committee has
+    // shifted from alice, bob, charlie to bob, charlie, dave
+    for i in 1..4 {
         let _ = client
             .post(format!("http://127.0.0.1:{}/validator/rotate_network_key", validator_ports[i]))
             .send()
@@ -117,16 +136,22 @@ async fn test_reshare() {
         let (key_share_after_rotate, aux_info_after_rotate): KeyShareWithAuxInfo =
             deserialize(&key_share_and_aux_data_after_rotate).unwrap();
 
-        // Check key share has changed
-        assert_ne!(
-            serialize(&key_share_before).unwrap(),
-            serialize(&key_share_after_rotate).unwrap()
-        );
-        // Check aux info has changed
-        assert_ne!(
-            serialize(&aux_info_before).unwrap(),
-            serialize(&aux_info_after_rotate).unwrap()
-        );
+        // We can only check if the first two keyshares changed as dave did not have a keyshare at
+        // all before
+        if i < 3 {
+            let (key_share_before, aux_info_before): KeyShareWithAuxInfo =
+                deserialize(&key_shares_before[i]).unwrap();
+            // Check key share has changed
+            assert_ne!(
+                serialize(&key_share_before).unwrap(),
+                serialize(&key_share_after_rotate).unwrap()
+            );
+            // Check aux info has changed
+            assert_ne!(
+                serialize(&aux_info_before).unwrap(),
+                serialize(&aux_info_after_rotate).unwrap()
+            );
+        }
 
         // calling twice doesn't do anything
         let response = client
@@ -153,6 +178,7 @@ async fn test_reshare() {
         );
     }
 
+    // Check that rotating the network key wont work again later
     run_to_block(&rpc, block_number + 7).await;
 
     let response_stale =
@@ -160,7 +186,57 @@ async fn test_reshare() {
 
     assert_eq!(response_stale.text().await.unwrap(), "Data is stale");
 
-    // TODO #981 - test signing a message with the new keyshare set
+    // Now test signing a message with the new keyshare set
+    let account_owner = AccountKeyring::Ferdie.pair();
+    let signature_request_author = AccountKeyring::One;
+    // Store a program
+    let program_pointer = test_client::store_program(
+        &api,
+        &rpc,
+        &account_owner,
+        TEST_PROGRAM_WASM_BYTECODE.to_owned(),
+        vec![],
+        vec![],
+        vec![],
+    )
+    .await
+    .unwrap();
+
+    // Register, using that program
+    let (verifying_key, _registered_info) = test_client::register(
+        &api,
+        &rpc,
+        account_owner.clone(),
+        AccountId32(account_owner.public().0),
+        BoundedVec(vec![ProgramInstance { program_pointer, program_config: vec![] }]),
+    )
+    .await
+    .unwrap();
+
+    // Sign a message
+    let recoverable_signature = test_client::sign(
+        &api,
+        &rpc,
+        signature_request_author.pair(),
+        verifying_key,
+        PREIMAGE_SHOULD_SUCCEED.to_vec(),
+        Some(AUXILARY_DATA_SHOULD_SUCCEED.to_vec()),
+    )
+    .await
+    .unwrap();
+
+    // Check the signature
+    let message_should_succeed_hash = Hasher::keccak(PREIMAGE_SHOULD_SUCCEED);
+    let recovery_key_from_sig = VerifyingKey::recover_from_prehash(
+        &message_should_succeed_hash,
+        &recoverable_signature.signature,
+        recoverable_signature.recovery_id,
+    )
+    .unwrap();
+    assert_eq!(
+        verifying_key.to_vec(),
+        recovery_key_from_sig.to_encoded_point(true).to_bytes().to_vec()
+    );
     clean_tests();
 }
 
@@ -173,9 +249,10 @@ async fn test_reshare_none_called() {
     let _cxt = test_node_process_testing_state(true).await;
 
     let add_parent_key_to_kvdb = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key_to_kvdb).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key_to_kvdb, ChainSpecType::Integration).await;
 
-    let validator_ports = vec![3001, 3002, 3003];
+    let validator_ports = vec![3001, 3002, 3003, 3004];
 
     let client = reqwest::Client::new();
 
diff --git a/crates/threshold-signature-server/tests/register_and_sign.rs b/crates/threshold-signature-server/tests/register_and_sign.rs
index 839bd41d9..d54c961b9 100644
--- a/crates/threshold-signature-server/tests/register_and_sign.rs
+++ b/crates/threshold-signature-server/tests/register_and_sign.rs
@@ -26,7 +26,7 @@ use entropy_testing_utils::{
     constants::{
         AUXILARY_DATA_SHOULD_SUCCEED, PREIMAGE_SHOULD_SUCCEED, TEST_PROGRAM_WASM_BYTECODE,
     },
-    jump_start_network, spawn_testing_validators, test_node_process_testing_state,
+    jump_start_network, spawn_testing_validators, test_node_process_testing_state, ChainSpecType,
 };
 use serial_test::serial;
 use sp_core::{sr25519, Pair};
@@ -42,7 +42,8 @@ async fn integration_test_register_and_sign() {
     let signature_request_author = AccountKeyring::One;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
diff --git a/crates/threshold-signature-server/tests/sign_eth_tx.rs b/crates/threshold-signature-server/tests/sign_eth_tx.rs
index 00279dad4..1aa9cd399 100644
--- a/crates/threshold-signature-server/tests/sign_eth_tx.rs
+++ b/crates/threshold-signature-server/tests/sign_eth_tx.rs
@@ -25,7 +25,7 @@ use entropy_kvdb::clean_tests;
 use entropy_protocol::{decode_verifying_key, RecoverableSignature};
 use entropy_testing_utils::{
     constants::{AUXILARY_DATA_SHOULD_SUCCEED, TEST_PROGRAM_WASM_BYTECODE},
-    jump_start_network, spawn_testing_validators, test_node_process_testing_state,
+    jump_start_network, spawn_testing_validators, test_node_process_testing_state, ChainSpecType,
 };
 use ethers_core::{
     abi::ethabi::ethereum_types::{H160, H256},
@@ -51,7 +51,8 @@ async fn integration_test_sign_eth_tx() {
     let signature_request_author = AccountKeyring::One;
 
     let add_parent_key = true;
-    let (_validator_ips, _validator_ids) = spawn_testing_validators(add_parent_key).await;
+    let (_validator_ips, _validator_ids) =
+        spawn_testing_validators(add_parent_key, ChainSpecType::Integration).await;
 
     let force_authoring = true;
     let substrate_context = test_node_process_testing_state(force_authoring).await;
diff --git a/node/cli/src/chain_spec/integration_tests.rs b/node/cli/src/chain_spec/integration_tests.rs
index c5dd75816..8798f35ca 100644
--- a/node/cli/src/chain_spec/integration_tests.rs
+++ b/node/cli/src/chain_spec/integration_tests.rs
@@ -58,7 +58,6 @@ pub fn integration_tests_config() -> ChainSpec {
             vec![],
             get_account_id_from_seed::<sr25519::Public>("Alice"),
             vec![
-                get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
                 get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
                 get_account_id_from_seed::<sr25519::Public>("Charlie//stash"),
             ],
@@ -182,7 +181,7 @@ pub fn integration_tests_genesis_config(
                     (
                         crate::chain_spec::tss_account_id::DAVE.clone(),
                         crate::chain_spec::tss_x25519_public_key::DAVE,
-                        "127.0.0.1:3002".as_bytes().to_vec(),
+                        "127.0.0.1:3004".as_bytes().to_vec(),
                     ),
                 ),
             ],
@@ -215,7 +214,7 @@ pub fn integration_tests_genesis_config(
                 ],
                 vec![EVE_VERIFYING_KEY.to_vec(), DAVE_VERIFYING_KEY.to_vec()],
             ),
-            mock_signer_rotate: (true, mock_signer_rotate_data, vec![get_account_id_from_seed::<sr25519::Public>("Alice//stash")],),
+            mock_signer_rotate: (true, mock_signer_rotate_data, vec![get_account_id_from_seed::<sr25519::Public>("Dave//stash")],),
         },
         "elections": ElectionsConfig {
             members: endowed_accounts
diff --git a/pallets/staking/src/lib.rs b/pallets/staking/src/lib.rs
index fd4c79f50..f6ea6f16a 100644
--- a/pallets/staking/src/lib.rs
+++ b/pallets/staking/src/lib.rs
@@ -279,14 +279,10 @@ pub mod pallet {
             ProactiveRefresh::<T>::put(refresh_info);
             // mocks a signer rotation for tss new_reshare tests
             if self.mock_signer_rotate.0 {
-                self.mock_signer_rotate
-                    .clone()
-                    .1
-                    .push(self.mock_signer_rotate.clone().2[0].clone());
-                NextSigners::<T>::put(NextSignerInfo {
-                    next_signers: self.mock_signer_rotate.clone().1,
-                    confirmations: vec![],
-                });
+                let next_signers = &mut self.mock_signer_rotate.1.clone();
+                next_signers.push(self.mock_signer_rotate.2[0].clone());
+                let next_signers = next_signers.to_vec();
+                NextSigners::<T>::put(NextSignerInfo { next_signers, confirmations: vec![] });
 
                 ReshareData::<T>::put(ReshareInfo {
                     // To give enough time for test_reshare setup