diff --git a/config/papyrus/default_config.json b/config/papyrus/default_config.json
index ab8323e8ad..ca23decdbc 100644
--- a/config/papyrus/default_config.json
+++ b/config/papyrus/default_config.json
@@ -197,7 +197,7 @@
   "consensus.validator_id": {
     "description": "The validator id of the node.",
     "privacy": "Public",
-    "value": "0x0"
+    "value": "0x64"
   },
   "monitoring_gateway.collect_metrics": {
     "description": "If true, collect and return metrics in the monitoring gateway.",
@@ -509,4 +509,4 @@
     "privacy": "Public",
     "value": true
   }
-}
\ No newline at end of file
+}
diff --git a/crates/papyrus_node/src/config/snapshots/papyrus_node__config__config_test__dump_default_config.snap b/crates/papyrus_node/src/config/snapshots/papyrus_node__config__config_test__dump_default_config.snap
index bc2248761a..8dba090377 100644
--- a/crates/papyrus_node/src/config/snapshots/papyrus_node__config__config_test__dump_default_config.snap
+++ b/crates/papyrus_node/src/config/snapshots/papyrus_node__config__config_test__dump_default_config.snap
@@ -238,7 +238,7 @@ expression: dumped_default_config
   },
   "consensus.validator_id": {
     "description": "The validator id of the node.",
-    "value": "0x0",
+    "value": "0x64",
     "privacy": "Public"
   },
   "monitoring_gateway.collect_metrics": {
diff --git a/crates/sequencing/papyrus_consensus/src/config.rs b/crates/sequencing/papyrus_consensus/src/config.rs
index 97ed7f4656..9567df8d70 100644
--- a/crates/sequencing/papyrus_consensus/src/config.rs
+++ b/crates/sequencing/papyrus_consensus/src/config.rs
@@ -90,7 +90,7 @@ impl Default for ConsensusConfig {
             ..Default::default()
         };
         Self {
-            validator_id: ValidatorId::default(),
+            validator_id: ValidatorId::from(100_u32),
             network_topic: "consensus".to_string(),
             start_height: BlockNumber::default(),
             num_validators: 1,
diff --git a/crates/sequencing/papyrus_consensus/src/test_utils.rs b/crates/sequencing/papyrus_consensus/src/test_utils.rs
index 45dcb09fa8..d39e42c1ff 100644
--- a/crates/sequencing/papyrus_consensus/src/test_utils.rs
+++ b/crates/sequencing/papyrus_consensus/src/test_utils.rs
@@ -39,7 +39,7 @@ impl TryFrom<MockProposalPart> for ProposalInit {
         Ok(ProposalInit {
             height: BlockNumber(part.0),
             round: 0,
-            proposer: ValidatorId::default(),
+            proposer: ValidatorId::from(100_u32),
             valid_round: None,
         })
     }
diff --git a/crates/sequencing/papyrus_consensus_orchestrator/src/papyrus_consensus_context_test.rs b/crates/sequencing/papyrus_consensus_orchestrator/src/papyrus_consensus_context_test.rs
index 0b6aa4feb4..19dc3fafc8 100644
--- a/crates/sequencing/papyrus_consensus_orchestrator/src/papyrus_consensus_context_test.rs
+++ b/crates/sequencing/papyrus_consensus_orchestrator/src/papyrus_consensus_context_test.rs
@@ -39,7 +39,7 @@ async fn build_proposal() {
     let proposal_init = ProposalInit {
         height: block_number,
         round: 0,
-        proposer: ValidatorId::default(),
+        proposer: ValidatorId::from(100_u32),
         valid_round: None,
     };
     // TODO(Asmaa): Test proposal content.
@@ -70,7 +70,7 @@ async fn validate_proposal_success() {
         .validate_proposal(
             block_number,
             0,
-            ValidatorId::default(),
+            ValidatorId::from(100_u32),
             Duration::MAX,
             validate_receiver,
         )
@@ -101,7 +101,7 @@ async fn validate_proposal_fail() {
         .validate_proposal(
             block_number,
             0,
-            ValidatorId::default(),
+            ValidatorId::from(100_u32),
             Duration::MAX,
             validate_receiver,
         )
diff --git a/crates/sequencing/papyrus_consensus_orchestrator/src/sequencer_consensus_context_test.rs b/crates/sequencing/papyrus_consensus_orchestrator/src/sequencer_consensus_context_test.rs
index 3fb1a632c6..f3814ba5a1 100644
--- a/crates/sequencing/papyrus_consensus_orchestrator/src/sequencer_consensus_context_test.rs
+++ b/crates/sequencing/papyrus_consensus_orchestrator/src/sequencer_consensus_context_test.rs
@@ -128,7 +128,7 @@ async fn build_proposal() {
     let init = ProposalInit {
         height: BlockNumber(0),
         round: 0,
-        proposer: ValidatorId::default(),
+        proposer: ValidatorId::from(100_u32),
         valid_round: None,
     };
     // TODO(Asmaa): Test proposal content.
@@ -208,7 +208,7 @@ async fn validate_proposal_success() {
         .await
         .unwrap();
     let fin_receiver = context
-        .validate_proposal(BlockNumber(0), 0, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 0, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
     content_sender.close_channel();
     assert_eq!(fin_receiver.await.unwrap().0.0, STATE_DIFF_COMMITMENT.0.0);
@@ -269,7 +269,7 @@ async fn repropose() {
     });
     content_sender.send(prop_part).await.unwrap();
     let fin_receiver = context
-        .validate_proposal(BlockNumber(0), 0, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 0, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
     content_sender.close_channel();
     assert_eq!(fin_receiver.await.unwrap().0.0, STATE_DIFF_COMMITMENT.0.0);
@@ -351,7 +351,7 @@ async fn proposals_from_different_rounds() {
     content_sender.send(prop_part_txs.clone()).await.unwrap();
 
     let fin_receiver_past_round = context
-        .validate_proposal(BlockNumber(0), 0, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 0, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
     // No fin was sent, channel remains open.
     assert!(fin_receiver_past_round.await.is_err());
@@ -361,7 +361,7 @@ async fn proposals_from_different_rounds() {
     content_sender.send(prop_part_txs.clone()).await.unwrap();
     content_sender.send(prop_part_fin.clone()).await.unwrap();
     let fin_receiver_curr_round = context
-        .validate_proposal(BlockNumber(0), 1, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 1, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
     assert_eq!(fin_receiver_curr_round.await.unwrap().0.0, STATE_DIFF_COMMITMENT.0.0);
 
@@ -370,7 +370,7 @@ async fn proposals_from_different_rounds() {
     content_sender.send(prop_part_txs.clone()).await.unwrap();
     content_sender.send(prop_part_fin.clone()).await.unwrap();
     let fin_receiver_future_round = context
-        .validate_proposal(BlockNumber(0), 2, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 2, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
     content_sender.close_channel();
     // Even with sending fin and closing the channel.
@@ -439,7 +439,7 @@ async fn interrupt_active_proposal() {
     // without needing interrupt.
     let (mut _content_sender_0, content_receiver) = mpsc::channel(CHANNEL_SIZE);
     let fin_receiver_0 = context
-        .validate_proposal(BlockNumber(0), 0, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 0, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
 
     let (mut content_sender_1, content_receiver) = mpsc::channel(CHANNEL_SIZE);
@@ -457,7 +457,7 @@ async fn interrupt_active_proposal() {
         .await
         .unwrap();
     let fin_receiver_1 = context
-        .validate_proposal(BlockNumber(0), 1, ValidatorId::default(), TIMEOUT, content_receiver)
+        .validate_proposal(BlockNumber(0), 1, ValidatorId::from(100_u32), TIMEOUT, content_receiver)
         .await;
     // Move the context to the next round.
     context.set_height_and_round(BlockNumber(0), 1).await;