diff --git a/bin/utils/seed_mpc_db.rs b/bin/utils/seed_mpc_db.rs
index 289105c..1083837 100644
--- a/bin/utils/seed_mpc_db.rs
+++ b/bin/utils/seed_mpc_db.rs
@@ -1,10 +1,17 @@
+use std::sync::Arc;
+
 use clap::Args;
-use indicatif::ProgressBar;
+use futures::stream::FuturesUnordered;
+use futures::StreamExt;
+use indicatif::{MultiProgress, ProgressBar, ProgressStyle};
+use mpc::bits::Bits;
 use mpc::config::DbConfig;
 use mpc::db::Db;
+use mpc::distance::EncodedBits;
 use mpc::rng_source::RngSource;
 use mpc::template::Template;
-use rand::Rng;
+use rand::{thread_rng, Rng};
+use rayon::iter::{IntoParallelIterator, ParallelIterator};
 
 #[derive(Debug, Clone, Args)]
 pub struct SeedMPCDb {
@@ -14,10 +21,10 @@ pub struct SeedMPCDb {
     #[clap(short, long)]
     pub participant_db_url: Vec<String>,
 
-    #[clap(short, long, default_value = "3000000")]
+    #[clap(short, long, default_value = "100000")]
     pub num_templates: usize,
 
-    #[clap(short, long, default_value = "10000")]
+    #[clap(short, long, default_value = "100")]
     pub batch_size: usize,
 
     #[clap(short, long, env, default_value = "thread")]
@@ -29,96 +36,237 @@ pub async fn seed_mpc_db(args: &SeedMPCDb) -> eyre::Result<()> {
         return Err(eyre::eyre!("No participant DBs provided"));
     }
 
-    let mut templates: Vec<Template> = Vec::with_capacity(args.num_templates);
-
-    tracing::info!("Generating templates");
-    let pb = ProgressBar::new(args.num_templates as u64)
-        .with_message("Generating templates");
+    let (coordinator_db, participant_dbs) = initialize_dbs(args).await?;
 
-    let mut rng = args.rng.to_rng();
+    let now = std::time::Instant::now();
 
-    for _ in 0..args.num_templates {
-        templates.push(rng.gen());
+    let latest_serial_id =
+        get_latest_serial_id(coordinator_db.clone(), participant_dbs.clone())
+            .await?;
 
-        pb.inc(1);
-    }
+    let templates = generate_templates(args);
+    println!("Templates generated in {:?}", now.elapsed());
 
-    pb.finish_with_message("done");
+    let (batched_masks, batched_shares) = generate_shares_and_masks(
+        args,
+        templates,
+        (latest_serial_id + 1) as usize,
+    );
+    println!("Shares and masks generated in {:?}", now.elapsed());
 
-    let coordinator_db = Db::new(&DbConfig {
-        url: args.coordinator_db_url.clone(),
-        migrate: true,
-        create: true,
-    })
+    insert_masks_and_shares(
+        batched_masks,
+        batched_shares,
+        coordinator_db,
+        participant_dbs,
+        args.num_templates,
+        args.batch_size,
+    )
     .await?;
 
+    println!("Time elapsed: {:?}", now.elapsed());
+
+    Ok(())
+}
+
+async fn initialize_dbs(
+    args: &SeedMPCDb,
+) -> eyre::Result<(Arc<Db>, Vec<Arc<Db>>)> {
+    let coordinator_db = Arc::new(
+        Db::new(&DbConfig {
+            url: args.coordinator_db_url.clone(),
+            migrate: true,
+            create: true,
+        })
+        .await?,
+    );
+
     let mut participant_dbs = vec![];
 
     for db_config in args.participant_db_url.iter() {
-        participant_dbs.push(
+        participant_dbs.push(Arc::new(
             Db::new(&DbConfig {
                 url: db_config.clone(),
                 migrate: true,
                 create: true,
             })
             .await?,
-        );
+        ));
     }
 
-    tracing::info!("Seeding databases");
-    let pb =
-        ProgressBar::new(args.num_templates as u64).with_message("Seeding DBs");
+    Ok((coordinator_db, participant_dbs))
+}
 
-    for (idx, chunk) in templates.chunks(args.batch_size).enumerate() {
-        tracing::info!(
-            "Seeding chunk {}/{}",
-            idx + 1,
-            (templates.len() / args.batch_size) + 1
-        );
+fn generate_templates(args: &SeedMPCDb) -> Vec<Template> {
+    let pb = ProgressBar::new(args.num_templates as u64)
+        .with_message("Generating templates...");
+
+    pb.set_style(ProgressStyle::default_bar()
+        .template("{spinner:.green} {msg} [{elapsed_precise}] [{wide_bar:.green}] {pos:>7}/{len:7} ({eta})")
+        .expect("Could not create progress bar"));
 
-        let mut chunk_masks = Vec::with_capacity(chunk.len());
-        let mut chunk_shares: Vec<_> = (0..participant_dbs.len())
+    // Generate templates
+    let templates = (0..args.num_templates)
+        .into_par_iter()
+        .map(|_| {
+            let mut rng = thread_rng();
+
+            let template = rng.gen();
+
+            pb.inc(1);
+            template
+        })
+        .collect::<Vec<Template>>();
+
+    pb.finish_with_message("Created templates");
+
+    templates
+}
+
+pub type BatchedShares = Vec<Vec<Vec<(u64, EncodedBits)>>>;
+pub type BatchedMasks = Vec<Vec<(u64, Bits)>>;
+
+fn generate_shares_and_masks(
+    args: &SeedMPCDb,
+    templates: Vec<Template>,
+    next_serial_id: usize,
+) -> (BatchedMasks, BatchedShares) {
+    // Generate shares and masks
+    let mut batched_shares = vec![];
+    let mut batched_masks = vec![];
+
+    let num_participants = args.participant_db_url.len();
+
+    let pb = ProgressBar::new(args.num_templates as u64)
+        .with_message("Generating shares and masks...");
+
+    pb.set_style(ProgressStyle::default_bar()
+        .template("{spinner:.green} {msg} [{elapsed_precise}] [{wide_bar:.green}] {pos:>7}/{len:7} ({eta})")
+        .expect("Could not create progress bar"));
+
+    for (idx, chunk) in templates.chunks(args.batch_size).enumerate() {
+        let mut batch_masks = Vec::with_capacity(chunk.len());
+        let mut batch_shares: Vec<_> = (0..num_participants)
             .map(|_| Vec::with_capacity(chunk.len()))
             .collect();
 
-        tracing::info!("Encoding shares");
-        let pb = ProgressBar::new(chunk.len() as u64)
-            .with_message("Encoding shares");
-        for (offset, template) in chunk.iter().enumerate() {
-            let shares = mpc::distance::encode(template)
-                .share(participant_dbs.len(), &mut rng);
+        let shares_chunk = chunk
+            .into_par_iter()
+            .map(|template| {
+                let mut rng = thread_rng();
 
-            let id = offset + (idx * args.batch_size);
+                let shares = mpc::distance::encode(template)
+                    .share(num_participants, &mut rng);
+
+                pb.inc(1);
+                shares
+            })
+            .collect::<Vec<Box<[EncodedBits]>>>();
+
+        for (offset, (shares, template)) in
+            shares_chunk.iter().zip(chunk).enumerate()
+        {
+            let id = offset + (idx * args.batch_size) + next_serial_id;
+
+            batch_masks.push((id as u64, template.mask));
 
-            chunk_masks.push((id as u64, template.mask));
             for (idx, share) in shares.iter().enumerate() {
-                chunk_shares[idx].push((id as u64, *share));
+                batch_shares[idx].push((id as u64, *share));
             }
-
-            pb.inc(1);
         }
 
-        let mut tasks = vec![];
+        batched_shares.push(batch_shares);
+        batched_masks.push(batch_masks);
+    }
+
+    pb.finish_with_message("Created shares and masks");
 
-        for (idx, db) in participant_dbs.iter().enumerate() {
-            tracing::info!("Inserting shares into participant DB {idx}");
+    (batched_masks, batched_shares)
+}
 
-            tasks.push(db.insert_shares(&chunk_shares[idx]));
-        }
+async fn insert_masks_and_shares(
+    batched_masks: BatchedMasks,
+    batched_shares: BatchedShares,
+    coordinator_db: Arc<Db>,
+    participant_dbs: Vec<Arc<Db>>,
+    num_templates: usize,
+    batch_size: usize,
+) -> eyre::Result<()> {
+    println!("Inserting masks and shares into db...");
 
-        tracing::info!("Inserting masks into coordinator DB");
-        let (coordinator, participants) = tokio::join!(
-            coordinator_db.insert_masks(&chunk_masks),
-            futures::future::join_all(tasks),
-        );
+    // Commit shares and masks to db
+    let mpb = MultiProgress::new();
+    let style = ProgressStyle::default_bar().template("{spinner:.green} {msg} [{elapsed_precise}] [{wide_bar:.green}] {pos:>7}/{len:7} ({eta})")?;
 
-        coordinator?;
-        participants.into_iter().collect::<Result<_, _>>()?;
+    let participant_progress_bars = participant_dbs
+        .iter()
+        .enumerate()
+        .map(|(i, _)| {
+            mpb.add(ProgressBar::new(num_templates as u64).with_message(
+                format!("Inserting shares for participant {}", i),
+            ))
+        })
+        .collect::<Vec<_>>();
 
-        pb.inc(args.batch_size as u64);
+    for pb in participant_progress_bars.iter() {
+        pb.set_style(style.clone());
     }
 
-    pb.finish_with_message("done");
+    let coordinator_progress_bar = mpb.add(
+        ProgressBar::new(num_templates as u64)
+            .with_message("Inserting masks for coordinator"),
+    );
+    coordinator_progress_bar.set_style(style.clone());
+
+    for (shares, masks) in
+        batched_shares.into_iter().zip(batched_masks.into_iter())
+    {
+        let mut tasks = FuturesUnordered::new();
+
+        for (idx, db) in participant_dbs.iter().enumerate() {
+            let shares = shares[idx].clone();
+            let db = db.clone();
+            let pb = participant_progress_bars[idx].clone();
+
+            tasks.push(tokio::spawn(async move {
+                db.insert_shares(&shares).await?;
+                pb.inc(batch_size as u64);
+                eyre::Result::<()>::Ok(())
+            }));
+        }
+
+        let coordinator_db = coordinator_db.clone();
+        let coordinator_progress_bar = coordinator_progress_bar.clone();
+        tasks.push(tokio::spawn(async move {
+            coordinator_db.insert_masks(&masks).await?;
+            coordinator_progress_bar.inc(batch_size as u64);
+            eyre::Result::<()>::Ok(())
+        }));
+
+        while let Some(result) = tasks.next().await {
+            result??;
+        }
+    }
 
     Ok(())
 }
+
+async fn get_latest_serial_id(
+    coordinator_db: Arc<Db>,
+    participant_dbs: Vec<Arc<Db>>,
+) -> eyre::Result<u64> {
+    let coordinator_serial_id = coordinator_db.fetch_latest_mask_id().await?;
+    println!("Coordinator serial id: {}", coordinator_serial_id);
+
+    for (i, db) in participant_dbs.iter().enumerate() {
+        let participant_id = db.fetch_latest_share_id().await?;
+
+        println!("Participant {} ids: {}", i, participant_id);
+        assert_eq!(
+            coordinator_serial_id, participant_id,
+            "Databases are not in sync"
+        );
+    }
+
+    Ok(coordinator_serial_id)
+}
diff --git a/bin/utils/utils.rs b/bin/utils/utils.rs
index 9ee7423..feb74ae 100644
--- a/bin/utils/utils.rs
+++ b/bin/utils/utils.rs
@@ -6,7 +6,6 @@ use seed_iris_db::{seed_iris_db, SeedIrisDb};
 use seed_mpc_db::{seed_mpc_db, SeedMPCDb};
 use sqs_query::{sqs_query, SQSQuery};
 use sqs_receive::{sqs_receive, SQSReceive};
-use telemetry_batteries::tracing::stdout::StdoutBattery;
 
 mod generate_mock_templates;
 mod seed_iris_db;
@@ -27,8 +26,6 @@ enum Opt {
 async fn main() -> eyre::Result<()> {
     dotenv::dotenv().ok();
 
-    let _shutdown_tracing_provider = StdoutBattery::init();
-
     let args = Opt::parse();
 
     match args {
diff --git a/src/db.rs b/src/db.rs
index 5c262c9..3417605 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -53,6 +53,46 @@ impl Db {
         Ok(filter_sequential_items(masks, 1 + id as i64))
     }
 
+    #[tracing::instrument(skip(self))]
+    pub async fn fetch_latest_mask_id(&self) -> eyre::Result<u64> {
+        let mask_id = sqlx::query_as::<_, (i64,)>(
+            r#"
+            SELECT id
+            FROM masks
+            ORDER BY id DESC
+            LIMIT 1
+        "#,
+        )
+        .fetch_one(&self.pool)
+        .await;
+
+        match mask_id {
+            Ok(mask_id) => Ok(mask_id.0 as u64),
+            Err(sqlx::Error::RowNotFound) => Ok(0),
+            Err(err) => Err(err.into()),
+        }
+    }
+
+    #[tracing::instrument(skip(self))]
+    pub async fn fetch_latest_share_id(&self) -> eyre::Result<u64> {
+        let share_id = sqlx::query_as::<_, (i64,)>(
+            r#"
+            SELECT id
+            FROM shares
+            ORDER BY id DESC
+            LIMIT 1
+        "#,
+        )
+        .fetch_one(&self.pool)
+        .await;
+
+        match share_id {
+            Ok(share_id) => Ok(share_id.0 as u64),
+            Err(sqlx::Error::RowNotFound) => Ok(0),
+            Err(err) => Err(err.into()),
+        }
+    }
+
     #[tracing::instrument(skip(self))]
     pub async fn insert_masks(
         &self,