diff --git a/cli/src/cli.rs b/cli/src/cli.rs
index ac0f27e3..187547ab 100644
--- a/cli/src/cli.rs
+++ b/cli/src/cli.rs
@@ -76,6 +76,7 @@ pub enum CliCommand {
     // Thread commands
     ThreadCreate {
         id: String,
+        domain: String,
         kickoff_instruction: SerializableInstruction,
         trigger: Trigger,
     },
diff --git a/cli/src/parser.rs b/cli/src/parser.rs
index e097a02e..9c9184fd 100644
--- a/cli/src/parser.rs
+++ b/cli/src/parser.rs
@@ -195,6 +195,7 @@ fn parse_thread_command(matches: &ArgMatches) -> Result<CliCommand, CliError> {
         Some(("crate-info", _)) => Ok(CliCommand::ThreadCrateInfo {}),
         Some(("create", matches)) => Ok(CliCommand::ThreadCreate {
             id: parse_string("id", matches)?,
+            domain: parse_string("domain", matches)?,
             kickoff_instruction: parse_instruction_file("kickoff_instruction", matches)?,
             trigger: parse_trigger(matches)?,
         }),
diff --git a/cli/src/processor/localnet.rs b/cli/src/processor/localnet.rs
index ed364c3d..f37ddfb6 100644
--- a/cli/src/processor/localnet.rs
+++ b/cli/src/processor/localnet.rs
@@ -164,7 +164,7 @@ fn register_worker(client: &Client, config: &CliConfig) -> Result<()> {
 fn create_threads(client: &Client, mint_pubkey: Pubkey) -> Result<()> {
     // Create epoch thread.
     let epoch_thread_id = "sablier.network.epoch";
-    let epoch_thread_pubkey = Thread::pubkey(client.payer_pubkey(), epoch_thread_id.into());
+    let epoch_thread_pubkey = Thread::pubkey(client.payer_pubkey(), epoch_thread_id.into(), None);
     let ix_a1 = Instruction {
         program_id: sablier_network_program::ID,
         accounts: sablier_network_program::accounts::DistributeFeesJob {
@@ -237,6 +237,7 @@ fn create_threads(client: &Client, mint_pubkey: Pubkey) -> Result<()> {
         data: sablier_thread_program::instruction::ThreadCreate {
             amount: LAMPORTS_PER_SOL,
             id: epoch_thread_id.into(),
+            domain: None,
             instructions: vec![
                 ix_a1.into(),
                 ix_a2.into(),
@@ -255,7 +256,7 @@ fn create_threads(client: &Client, mint_pubkey: Pubkey) -> Result<()> {
 
     // Create hasher thread.
     let hasher_thread_id = "sablier.network.hasher";
-    let hasher_thread_pubkey = Thread::pubkey(client.payer_pubkey(), hasher_thread_id.into());
+    let hasher_thread_pubkey = Thread::pubkey(client.payer_pubkey(), hasher_thread_id.into(), None);
     let registry_hash_ix = Instruction {
         program_id: sablier_network_program::ID,
         accounts: sablier_network_program::accounts::RegistryNonceHash {
@@ -278,6 +279,7 @@ fn create_threads(client: &Client, mint_pubkey: Pubkey) -> Result<()> {
         data: sablier_thread_program::instruction::ThreadCreate {
             amount: LAMPORTS_PER_SOL,
             id: hasher_thread_id.into(),
+            domain: None,
             instructions: vec![registry_hash_ix.into()],
             trigger: Trigger::Cron {
                 schedule: "*/15 * * * * * *".into(),
diff --git a/cli/src/processor/mod.rs b/cli/src/processor/mod.rs
index 388f7a67..7195db05 100644
--- a/cli/src/processor/mod.rs
+++ b/cli/src/processor/mod.rs
@@ -99,9 +99,10 @@ pub fn process(matches: &ArgMatches) -> Result<(), CliError> {
         CliCommand::ThreadCrateInfo {} => thread::crate_info(&client),
         CliCommand::ThreadCreate {
             id,
+            domain,
             kickoff_instruction,
             trigger,
-        } => thread::create(&client, id, vec![kickoff_instruction], trigger),
+        } => thread::create(&client, id, domain, vec![kickoff_instruction], trigger),
         CliCommand::ThreadDelete { id } => thread::delete(&client, id),
         CliCommand::ThreadPause { id } => thread::pause(&client, id),
         CliCommand::ThreadResume { id } => thread::resume(&client, id),
diff --git a/cli/src/processor/thread.rs b/cli/src/processor/thread.rs
index 47e34fdd..7a1d8d28 100644
--- a/cli/src/processor/thread.rs
+++ b/cli/src/processor/thread.rs
@@ -27,10 +27,15 @@ pub fn crate_info(client: &Client) -> Result<(), CliError> {
 pub fn create(
     client: &Client,
     id: String,
+    domain: String,
     instructions: Vec<SerializableInstruction>,
     trigger: Trigger,
 ) -> Result<(), CliError> {
-    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.clone().into_bytes());
+    let thread_pubkey = Thread::pubkey(
+        client.payer_pubkey(),
+        id.clone().into_bytes(),
+        Some(domain.into_bytes()),
+    );
     let ix = Instruction {
         program_id: sablier_thread_program::ID,
         accounts: sablier_thread_program::accounts::ThreadCreate {
@@ -43,6 +48,7 @@ pub fn create(
         data: sablier_thread_program::instruction::ThreadCreate {
             amount: 0,
             id: id.into_bytes(),
+            domain: None,
             instructions,
             trigger,
         }
@@ -54,7 +60,7 @@ pub fn create(
 }
 
 pub fn delete(client: &Client, id: String) -> Result<(), CliError> {
-    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes());
+    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes(), None);
     let ix = Instruction {
         program_id: sablier_thread_program::ID,
         accounts: sablier_thread_program::accounts::ThreadDelete {
@@ -77,7 +83,7 @@ pub fn get(client: &Client, address: Pubkey) -> Result<(), CliError> {
 }
 
 pub fn pause(client: &Client, id: String) -> Result<(), CliError> {
-    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes());
+    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes(), None);
     let ix = Instruction {
         program_id: sablier_thread_program::ID,
         accounts: sablier_thread_program::accounts::ThreadPause {
@@ -93,7 +99,7 @@ pub fn pause(client: &Client, id: String) -> Result<(), CliError> {
 }
 
 pub fn resume(client: &Client, id: String) -> Result<(), CliError> {
-    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes());
+    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes(), None);
     let ix = Instruction {
         program_id: sablier_thread_program::ID,
         accounts: sablier_thread_program::accounts::ThreadResume {
@@ -109,7 +115,7 @@ pub fn resume(client: &Client, id: String) -> Result<(), CliError> {
 }
 
 pub fn reset(client: &Client, id: String) -> Result<(), CliError> {
-    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes());
+    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes(), None);
     let ix = Instruction {
         program_id: sablier_thread_program::ID,
         accounts: sablier_thread_program::accounts::ThreadReset {
@@ -130,7 +136,7 @@ pub fn update(
     rate_limit: Option<u64>,
     schedule: Option<String>,
 ) -> Result<(), CliError> {
-    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes());
+    let thread_pubkey = Thread::pubkey(client.payer_pubkey(), id.into_bytes(), None);
     let trigger = schedule.map(|schedule| Trigger::Cron {
         schedule,
         skippable: true,
@@ -162,6 +168,6 @@ pub fn parse_pubkey_from_id_or_address(
     id: Option<String>,
     address: Option<Pubkey>,
 ) -> Result<Pubkey, CliError> {
-    let address_from_id = id.map(|str| Thread::pubkey(authority, str.into()));
+    let address_from_id = id.map(|str| Thread::pubkey(authority, str.into(), None));
     address.or(address_from_id).ok_or(CliError::InvalidAddress)
 }
diff --git a/programs/thread/src/instructions/thread_create.rs b/programs/thread/src/instructions/thread_create.rs
index 5b8b78a7..51db658f 100644
--- a/programs/thread/src/instructions/thread_create.rs
+++ b/programs/thread/src/instructions/thread_create.rs
@@ -10,7 +10,7 @@ use crate::{constants::*, state::*};
 
 /// Accounts required by the `thread_create` instruction.
 #[derive(Accounts)]
-#[instruction(amount: u64, id: Vec<u8>, instructions: Vec<SerializableInstruction>,  trigger: Trigger)]
+#[instruction(amount: u64, id: Vec<u8>, domain: Option<Vec<u8>>, instructions: Vec<SerializableInstruction>,  trigger: Trigger)]
 pub struct ThreadCreate<'info> {
     /// The authority (owner) of the thread.
     pub authority: Signer<'info>,
@@ -29,6 +29,7 @@ pub struct ThreadCreate<'info> {
             SEED_THREAD,
             authority.key().as_ref(),
             id.as_slice(),
+            domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump,
         payer= payer,
@@ -48,6 +49,7 @@ pub fn handler(
     ctx: Context<ThreadCreate>,
     amount: u64,
     id: Vec<u8>,
+    domain: Option<Vec<u8>>,
     instructions: Vec<SerializableInstruction>,
     trigger: Trigger,
 ) -> Result<()> {
@@ -65,6 +67,7 @@ pub fn handler(
     thread.exec_context = None;
     thread.fee = THREAD_MINIMUM_FEE;
     thread.id = id;
+    thread.domain = domain;
     thread.instructions = instructions;
     thread.name = String::new();
     thread.next_instruction = None;
diff --git a/programs/thread/src/instructions/thread_delete.rs b/programs/thread/src/instructions/thread_delete.rs
index ff38a186..4f468a75 100644
--- a/programs/thread/src/instructions/thread_delete.rs
+++ b/programs/thread/src/instructions/thread_delete.rs
@@ -23,6 +23,7 @@ pub struct ThreadDelete<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
     )]
diff --git a/programs/thread/src/instructions/thread_exec.rs b/programs/thread/src/instructions/thread_exec.rs
index 82192dc8..690442ef 100644
--- a/programs/thread/src/instructions/thread_exec.rs
+++ b/programs/thread/src/instructions/thread_exec.rs
@@ -42,6 +42,7 @@ pub struct ThreadExec<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         constraint = !thread.paused @ SablierError::ThreadPaused,
@@ -93,6 +94,7 @@ pub fn handler(ctx: Context<ThreadExec>) -> Result<()> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice(),
             &[thread.bump],
         ]],
     )?;
diff --git a/programs/thread/src/instructions/thread_instruction_add.rs b/programs/thread/src/instructions/thread_instruction_add.rs
index 6f204d3d..c22b9184 100644
--- a/programs/thread/src/instructions/thread_instruction_add.rs
+++ b/programs/thread/src/instructions/thread_instruction_add.rs
@@ -24,6 +24,7 @@ pub struct ThreadInstructionAdd<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         has_one = authority
diff --git a/programs/thread/src/instructions/thread_instruction_remove.rs b/programs/thread/src/instructions/thread_instruction_remove.rs
index 37dfd409..66123824 100644
--- a/programs/thread/src/instructions/thread_instruction_remove.rs
+++ b/programs/thread/src/instructions/thread_instruction_remove.rs
@@ -17,6 +17,7 @@ pub struct ThreadInstructionRemove<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         has_one = authority
diff --git a/programs/thread/src/instructions/thread_kickoff.rs b/programs/thread/src/instructions/thread_kickoff.rs
index 3cc98eb1..5cb06631 100644
--- a/programs/thread/src/instructions/thread_kickoff.rs
+++ b/programs/thread/src/instructions/thread_kickoff.rs
@@ -27,12 +27,13 @@ pub struct ThreadKickoff<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         constraint = !thread.paused @ SablierError::ThreadPaused,
         constraint = thread.next_instruction.is_none() @ SablierError::ThreadBusy,
     )]
-    pub thread: Box<Account<'info, Thread>>,
+    pub thread: Account<'info, Thread>,
 
     /// The worker.
     #[account(address = worker.pubkey())]
@@ -117,6 +118,11 @@ pub fn handler(ctx: Context<ThreadKickoff>) -> Result<()> {
             // Verify the current timestamp is greater than or equal to the threshold timestamp.
             let threshold_timestamp = next_timestamp(reference_timestamp, schedule.clone())
                 .ok_or(SablierError::TriggerConditionFailed)?;
+            msg!(
+                "Threshold timestamp: {}, clock timestamp: {}",
+                threshold_timestamp,
+                clock.unix_timestamp
+            );
             require!(
                 clock.unix_timestamp.ge(&threshold_timestamp),
                 SablierError::TriggerConditionFailed
diff --git a/programs/thread/src/instructions/thread_pause.rs b/programs/thread/src/instructions/thread_pause.rs
index 052946ef..81c8eef4 100644
--- a/programs/thread/src/instructions/thread_pause.rs
+++ b/programs/thread/src/instructions/thread_pause.rs
@@ -16,6 +16,7 @@ pub struct ThreadPause<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         has_one = authority
diff --git a/programs/thread/src/instructions/thread_reset.rs b/programs/thread/src/instructions/thread_reset.rs
index d28a949b..7e220d6f 100644
--- a/programs/thread/src/instructions/thread_reset.rs
+++ b/programs/thread/src/instructions/thread_reset.rs
@@ -16,6 +16,7 @@ pub struct ThreadReset<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         has_one = authority
diff --git a/programs/thread/src/instructions/thread_resume.rs b/programs/thread/src/instructions/thread_resume.rs
index 3ce45dd1..79a8a29e 100644
--- a/programs/thread/src/instructions/thread_resume.rs
+++ b/programs/thread/src/instructions/thread_resume.rs
@@ -16,6 +16,7 @@ pub struct ThreadResume<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         has_one = authority
diff --git a/programs/thread/src/instructions/thread_update.rs b/programs/thread/src/instructions/thread_update.rs
index 1b40c7df..edf3b0dd 100644
--- a/programs/thread/src/instructions/thread_update.rs
+++ b/programs/thread/src/instructions/thread_update.rs
@@ -24,6 +24,7 @@ pub struct ThreadUpdate<'info> {
                 SEED_THREAD,
                 thread.authority.as_ref(),
                 thread.id.as_slice(),
+                thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
             ],
             bump = thread.bump,
             has_one = authority,
diff --git a/programs/thread/src/instructions/thread_withdraw.rs b/programs/thread/src/instructions/thread_withdraw.rs
index 1c58562c..8402aa04 100644
--- a/programs/thread/src/instructions/thread_withdraw.rs
+++ b/programs/thread/src/instructions/thread_withdraw.rs
@@ -21,6 +21,7 @@ pub struct ThreadWithdraw<'info> {
             SEED_THREAD,
             thread.authority.as_ref(),
             thread.id.as_slice(),
+            thread.domain.as_ref().unwrap_or(&Vec::new()).as_slice()
         ],
         bump = thread.bump,
         has_one = authority,
diff --git a/programs/thread/src/lib.rs b/programs/thread/src/lib.rs
index 2f2d796b..fa543897 100644
--- a/programs/thread/src/lib.rs
+++ b/programs/thread/src/lib.rs
@@ -40,10 +40,11 @@ pub mod thread_program {
         ctx: Context<ThreadCreate>,
         amount: u64,
         id: Vec<u8>,
+        domain: Option<Vec<u8>>,
         instructions: Vec<SerializableInstruction>,
         trigger: Trigger,
     ) -> Result<()> {
-        thread_create::handler(ctx, amount, id, instructions, trigger)
+        thread_create::handler(ctx, amount, id, domain, instructions, trigger)
     }
 
     /// Closes an existing thread account and returns the lamports to the owner.
diff --git a/programs/thread/src/state/thread.rs b/programs/thread/src/state/thread.rs
index adcd6268..f7a160a7 100644
--- a/programs/thread/src/state/thread.rs
+++ b/programs/thread/src/state/thread.rs
@@ -19,6 +19,7 @@ pub struct Thread {
     pub bump: u8,
     /// The cluster clock at the moment the thread was created.
     pub created_at: ClockData,
+    pub domain: Option<Vec<u8>>,
     /// The context of the thread's current execution state.
     pub exec_context: Option<ExecContext>,
     /// The number of lamports to payout to workers per execution.
@@ -41,9 +42,14 @@ pub struct Thread {
 
 impl Thread {
     /// Derive the pubkey of a thread account.
-    pub fn pubkey(authority: Pubkey, id: Vec<u8>) -> Pubkey {
+    pub fn pubkey(authority: Pubkey, id: Vec<u8>, domain: Option<Vec<u8>>) -> Pubkey {
         Pubkey::find_program_address(
-            &[SEED_THREAD, authority.as_ref(), id.as_slice()],
+            &[
+                SEED_THREAD,
+                authority.as_ref(),
+                id.as_slice(),
+                domain.unwrap_or_default().as_slice(),
+            ],
             &crate::ID,
         )
         .0
@@ -69,7 +75,7 @@ pub trait ThreadAccount {
 
 impl ThreadAccount for Account<'_, Thread> {
     fn pubkey(&self) -> Pubkey {
-        Thread::pubkey(self.authority, self.id.clone())
+        Thread::pubkey(self.authority, self.id.clone(), self.domain.clone())
     }
 
     fn realloc_account(&mut self) -> Result<()> {
diff --git a/programs/thread/src/state/versioned_thread.rs b/programs/thread/src/state/versioned_thread.rs
index 167fc0e5..d9fde909 100644
--- a/programs/thread/src/state/versioned_thread.rs
+++ b/programs/thread/src/state/versioned_thread.rs
@@ -31,6 +31,12 @@ impl VersionedThread {
         }
     }
 
+    pub fn domain(&self) -> Option<Vec<u8>> {
+        match self {
+            Self::V1(t) => t.domain.clone(),
+        }
+    }
+
     pub fn next_instruction(&self) -> Option<SerializableInstruction> {
         match self {
             Self::V1(t) => t.next_instruction.clone(),
@@ -51,7 +57,7 @@ impl VersionedThread {
 
     pub fn pubkey(&self) -> Pubkey {
         match self {
-            Self::V1(_) => Thread::pubkey(self.authority(), self.id()),
+            Self::V1(_) => Thread::pubkey(self.authority(), self.id(), self.domain()),
         }
     }
 
diff --git a/sdk/src/lib.rs b/sdk/src/lib.rs
index 78c85243..582c4f4e 100644
--- a/sdk/src/lib.rs
+++ b/sdk/src/lib.rs
@@ -26,10 +26,11 @@ pub mod cpi {
         ctx: CpiContext<'_, '_, '_, 'info, ThreadCreate<'info>>,
         amount: u64,
         id: Vec<u8>,
+        domain: Option<Vec<u8>>,
         instructions: Vec<crate::state::SerializableInstruction>,
         trigger: crate::state::Trigger,
     ) -> Result<()> {
-        sablier_thread_program::cpi::thread_create(ctx, amount, id, instructions, trigger)
+        sablier_thread_program::cpi::thread_create(ctx, amount, id, domain, instructions, trigger)
     }
 
     pub fn thread_delete<'info>(