diff --git a/src/lib.rs b/src/lib.rs
index 10716a9eb8..51e6471e7d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -16,6 +16,7 @@ pub mod packet;
 pub mod plan;
 pub mod recorder;
 pub mod result;
+pub mod sig_verify_stage;
 pub mod signature;
 pub mod streamer;
 pub mod thin_client;
diff --git a/src/sig_verify_stage.rs b/src/sig_verify_stage.rs
new file mode 100644
index 0000000000..db6c6dbab7
--- /dev/null
+++ b/src/sig_verify_stage.rs
@@ -0,0 +1,96 @@
+//! The `sig_verify_stage` implements the signature verification stage of the TPU.
+
+use ecdsa;
+use packet::SharedPackets;
+use rand::{thread_rng, Rng};
+use result::Result;
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::mpsc::{channel, Receiver, Sender};
+use std::sync::{Arc, Mutex};
+use std::thread::{spawn, JoinHandle};
+use std::time::Instant;
+use streamer;
+use timing;
+
+pub struct SigVerifyStage {
+    pub output: Receiver<Vec<(SharedPackets, Vec<u8>)>>,
+    pub thread_hdls: Vec<JoinHandle<()>>,
+}
+
+impl SigVerifyStage {
+    pub fn new(exit: Arc<AtomicBool>, packets_receiver: Receiver<SharedPackets>) -> Self {
+        let (verified_sender, output) = channel();
+        let thread_hdls = Self::verifier_services(exit, packets_receiver, verified_sender);
+        SigVerifyStage {
+            thread_hdls,
+            output,
+        }
+    }
+
+    fn verify_batch(batch: Vec<SharedPackets>) -> Vec<(SharedPackets, Vec<u8>)> {
+        let r = ecdsa::ed25519_verify(&batch);
+        batch.into_iter().zip(r).collect()
+    }
+
+    fn verifier(
+        recvr: &Arc<Mutex<streamer::PacketReceiver>>,
+        sendr: &Arc<Mutex<Sender<Vec<(SharedPackets, Vec<u8>)>>>>,
+    ) -> Result<()> {
+        let (batch, len) =
+            streamer::recv_batch(&recvr.lock().expect("'recvr' lock in fn verifier"))?;
+
+        let now = Instant::now();
+        let batch_len = batch.len();
+        let rand_id = thread_rng().gen_range(0, 100);
+        info!(
+            "@{:?} verifier: verifying: {} id: {}",
+            timing::timestamp(),
+            batch.len(),
+            rand_id
+        );
+
+        let verified_batch = Self::verify_batch(batch);
+        sendr
+            .lock()
+            .expect("lock in fn verify_batch in tpu")
+            .send(verified_batch)?;
+
+        let total_time_ms = timing::duration_as_ms(&now.elapsed());
+        let total_time_s = timing::duration_as_s(&now.elapsed());
+        info!(
+            "@{:?} verifier: done. batches: {} total verify time: {:?} id: {} verified: {} v/s {}",
+            timing::timestamp(),
+            batch_len,
+            total_time_ms,
+            rand_id,
+            len,
+            (len as f32 / total_time_s)
+        );
+        Ok(())
+    }
+
+    fn verifier_service(
+        exit: Arc<AtomicBool>,
+        packets_receiver: Arc<Mutex<streamer::PacketReceiver>>,
+        verified_sender: Arc<Mutex<Sender<Vec<(SharedPackets, Vec<u8>)>>>>,
+    ) -> JoinHandle<()> {
+        spawn(move || loop {
+            let e = Self::verifier(&packets_receiver.clone(), &verified_sender.clone());
+            if e.is_err() && exit.load(Ordering::Relaxed) {
+                break;
+            }
+        })
+    }
+
+    fn verifier_services(
+        exit: Arc<AtomicBool>,
+        packets_receiver: streamer::PacketReceiver,
+        verified_sender: Sender<Vec<(SharedPackets, Vec<u8>)>>,
+    ) -> Vec<JoinHandle<()>> {
+        let sender = Arc::new(Mutex::new(verified_sender));
+        let receiver = Arc::new(Mutex::new(packets_receiver));
+        (0..4)
+            .map(|_| Self::verifier_service(exit.clone(), receiver.clone(), sender.clone()))
+            .collect()
+    }
+}
diff --git a/src/tpu.rs b/src/tpu.rs
index d2be36783b..a41da61e76 100644
--- a/src/tpu.rs
+++ b/src/tpu.rs
@@ -3,27 +3,24 @@
 
 use accounting_stage::AccountingStage;
 use crdt::{Crdt, ReplicatedData};
-use ecdsa;
 use entry::Entry;
 use ledger;
 use packet;
 use packet::SharedPackets;
-use rand::{thread_rng, Rng};
 use result::Result;
 use serde_json;
+use sig_verify_stage::SigVerifyStage;
 use std::collections::VecDeque;
 use std::io::Write;
 use std::io::sink;
 use std::net::UdpSocket;
 use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::mpsc::{channel, Receiver, Sender};
+use std::sync::mpsc::{channel, Receiver};
 use std::sync::{Arc, Mutex, RwLock};
 use std::thread::{spawn, JoinHandle};
 use std::time::Duration;
-use std::time::Instant;
 use streamer;
 use thin_client_service::ThinClientService;
-use timing;
 
 pub struct Tpu {
     accounting_stage: AccountingStage,
@@ -129,73 +126,6 @@ impl Tpu {
         })
     }
 
-    fn verify_batch(batch: Vec<SharedPackets>) -> Vec<(SharedPackets, Vec<u8>)> {
-        let r = ecdsa::ed25519_verify(&batch);
-        batch.into_iter().zip(r).collect()
-    }
-
-    fn verifier(
-        recvr: &Arc<Mutex<streamer::PacketReceiver>>,
-        sendr: &Arc<Mutex<Sender<Vec<(SharedPackets, Vec<u8>)>>>>,
-    ) -> Result<()> {
-        let (batch, len) =
-            streamer::recv_batch(&recvr.lock().expect("'recvr' lock in fn verifier"))?;
-
-        let now = Instant::now();
-        let batch_len = batch.len();
-        let rand_id = thread_rng().gen_range(0, 100);
-        info!(
-            "@{:?} verifier: verifying: {} id: {}",
-            timing::timestamp(),
-            batch.len(),
-            rand_id
-        );
-
-        let verified_batch = Self::verify_batch(batch);
-        sendr
-            .lock()
-            .expect("lock in fn verify_batch in tpu")
-            .send(verified_batch)?;
-
-        let total_time_ms = timing::duration_as_ms(&now.elapsed());
-        let total_time_s = timing::duration_as_s(&now.elapsed());
-        info!(
-            "@{:?} verifier: done. batches: {} total verify time: {:?} id: {} verified: {} v/s {}",
-            timing::timestamp(),
-            batch_len,
-            total_time_ms,
-            rand_id,
-            len,
-            (len as f32 / total_time_s)
-        );
-        Ok(())
-    }
-
-    fn verifier_service(
-        exit: Arc<AtomicBool>,
-        packets_receiver: Arc<Mutex<streamer::PacketReceiver>>,
-        verified_sender: Arc<Mutex<Sender<Vec<(SharedPackets, Vec<u8>)>>>>,
-    ) -> JoinHandle<()> {
-        spawn(move || loop {
-            let e = Self::verifier(&packets_receiver.clone(), &verified_sender.clone());
-            if e.is_err() && exit.load(Ordering::Relaxed) {
-                break;
-            }
-        })
-    }
-
-    fn verifier_services(
-        exit: Arc<AtomicBool>,
-        packets_receiver: streamer::PacketReceiver,
-        verified_sender: Sender<Vec<(SharedPackets, Vec<u8>)>>,
-    ) -> Vec<JoinHandle<()>> {
-        let sender = Arc::new(Mutex::new(verified_sender));
-        let receiver = Arc::new(Mutex::new(packets_receiver));
-        (0..4)
-            .map(|_| Self::verifier_service(exit.clone(), receiver.clone(), sender.clone()))
-            .collect()
-    }
-
     fn thin_client_service(
         obj: SharedTpu,
         exit: Arc<AtomicBool>,
@@ -249,16 +179,14 @@ impl Tpu {
             packet_sender,
         )?;
 
-        let (verified_sender, verified_receiver) = channel();
-        let verify_threads: Vec<_> =
-            Self::verifier_services(exit.clone(), packet_receiver, verified_sender);
+        let sig_verify_stage = SigVerifyStage::new(exit.clone(), packet_receiver);
 
         let blob_recycler = packet::BlobRecycler::default();
         let (responder_sender, responder_receiver) = channel();
         let t_thin_client = Self::thin_client_service(
             obj.clone(),
             exit.clone(),
-            verified_receiver,
+            sig_verify_stage.output,
             responder_sender,
             packet_recycler.clone(),
             blob_recycler.clone(),
@@ -299,7 +227,7 @@ impl Tpu {
             t_listen,
             t_broadcast,
         ];
-        threads.extend(verify_threads.into_iter());
+        threads.extend(sig_verify_stage.thread_hdls.into_iter());
         Ok(threads)
     }
 
@@ -428,16 +356,15 @@ impl Tpu {
             blob_recycler.clone(),
             responder_receiver,
         );
-        let (verified_sender, verified_receiver) = channel();
-        let verify_threads: Vec<_> =
-            Self::verifier_services(exit.clone(), packet_receiver, verified_sender);
+
+        let sig_verify_stage = SigVerifyStage::new(exit.clone(), packet_receiver);
 
         let t_write = Self::drain_service(obj.clone(), exit.clone());
 
         let t_thin_client = Self::thin_client_service(
             obj.clone(),
             exit.clone(),
-            verified_receiver,
+            sig_verify_stage.output,
             responder_sender,
             packet_recycler.clone(),
             blob_recycler.clone(),
@@ -457,7 +384,7 @@ impl Tpu {
             t_thin_client,
             t_write,
         ];
-        threads.extend(verify_threads.into_iter());
+        threads.extend(sig_verify_stage.thread_hdls.into_iter());
         Ok(threads)
     }
 }