diff --git a/cmd/lotus-provider/proving.go b/cmd/lotus-provider/proving.go
index eaef45db7..cd955011b 100644
--- a/cmd/lotus-provider/proving.go
+++ b/cmd/lotus-provider/proving.go
@@ -172,7 +172,7 @@ It will not send any messages to the chain. Since it can compute any deadline, o
 			return err
 		}
 
-		wdPostTask, wdPoStSubmitTask, derlareRecoverTask, err := provider.WindowPostScheduler(ctx, deps.Cfg.Fees, deps.Cfg.Proving, deps.Full, deps.Verif, deps.LW, nil,
+		wdPostTask, wdPoStSubmitTask, derlareRecoverTask, err := provider.WindowPostScheduler(ctx, deps.Cfg.Fees, deps.Cfg.Proving, deps.Full, deps.Verif, deps.LW, nil, nil,
 			deps.As, deps.Maddrs, deps.DB, deps.Stor, deps.Si, deps.Cfg.Subsystems.WindowPostMaxTasks)
 		if err != nil {
 			return err
diff --git a/cmd/lotus-provider/tasks/tasks.go b/cmd/lotus-provider/tasks/tasks.go
index b81814423..1bf96431c 100644
--- a/cmd/lotus-provider/tasks/tasks.go
+++ b/cmd/lotus-provider/tasks/tasks.go
@@ -3,6 +3,7 @@ package tasks
 
 import (
 	"context"
+	"github.com/filecoin-project/lotus/provider/chainsched"
 	"github.com/filecoin-project/lotus/provider/lpffi"
 	"github.com/filecoin-project/lotus/provider/lpseal"
 
@@ -34,6 +35,8 @@ func StartTasks(ctx context.Context, dependencies *deps.Deps) (*harmonytask.Task
 	sender, sendTask := lpmessage.NewSender(full, full, db)
 	activeTasks = append(activeTasks, sendTask)
 
+	chainSched := chainsched.New(full)
+
 	///////////////////////////////////////////////////////////////////////
 	///// Task Selection
 	///////////////////////////////////////////////////////////////////////
@@ -42,7 +45,7 @@ func StartTasks(ctx context.Context, dependencies *deps.Deps) (*harmonytask.Task
 
 		if cfg.Subsystems.EnableWindowPost {
 			wdPostTask, wdPoStSubmitTask, derlareRecoverTask, err := provider.WindowPostScheduler(ctx, cfg.Fees, cfg.Proving, full, verif, lw, sender,
-				as, maddrs, db, stor, si, cfg.Subsystems.WindowPostMaxTasks)
+				chainSched, as, maddrs, db, stor, si, cfg.Subsystems.WindowPostMaxTasks)
 			if err != nil {
 				return nil, err
 			}
@@ -55,9 +58,9 @@ func StartTasks(ctx context.Context, dependencies *deps.Deps) (*harmonytask.Task
 		}
 	}
 
+	hasAnySealingTask := cfg.Subsystems.EnableSealSDR
 	{
 		// Sealing
-		hasAnySealingTask := cfg.Subsystems.EnableSealSDR
 
 		var sp *lpseal.SealPoller
 		var slr *lpffi.SealCalls
@@ -76,10 +79,31 @@ func StartTasks(ctx context.Context, dependencies *deps.Deps) (*harmonytask.Task
 			treesTask := lpseal.NewTreesTask(sp, db, slr, cfg.Subsystems.SealSDRTreesMaxTasks)
 			activeTasks = append(activeTasks, treesTask)
 		}
+		if cfg.Subsystems.EnableSendPrecommitMsg {
+			precommitTask := lpseal.NewSubmitPrecommitTask(sp, db, full, sender, cfg.Fees.MaxPreCommitGasFee)
+			activeTasks = append(activeTasks, precommitTask)
+		}
 	}
 	log.Infow("This lotus_provider instance handles",
 		"miner_addresses", maddrs,
 		"tasks", lo.Map(activeTasks, func(t harmonytask.TaskInterface, _ int) string { return t.TypeDetails().Name }))
 
-	return harmonytask.New(db, activeTasks, dependencies.ListenAddr)
+	ht, err := harmonytask.New(db, activeTasks, dependencies.ListenAddr)
+	if err != nil {
+		return nil, err
+	}
+
+	if hasAnySealingTask {
+		watcher, err := lpmessage.NewMessageWatcher(db, ht, chainSched, full)
+		if err != nil {
+			return nil, err
+		}
+		_ = watcher
+	}
+
+	if cfg.Subsystems.EnableWindowPost || hasAnySealingTask {
+		go chainSched.Run(ctx)
+	}
+
+	return ht, nil
 }
diff --git a/lib/harmony/harmonydb/sql/20231225-message-waits.sql b/lib/harmony/harmonydb/sql/20231225-message-waits.sql
index f3cfc1b6d..4143f3a56 100644
--- a/lib/harmony/harmonydb/sql/20231225-message-waits.sql
+++ b/lib/harmony/harmonydb/sql/20231225-message-waits.sql
@@ -1,5 +1,5 @@
 create table message_waits (
-    signed_message_cid text primary key references message_sends (signed_cid),
+    signed_message_cid text primary key,
     waiter_machine_id int references harmony_machines (id) on delete set null,
 
     executed_tsk_cid text,
diff --git a/node/config/types.go b/node/config/types.go
index e91d1dcf5..e2924de89 100644
--- a/node/config/types.go
+++ b/node/config/types.go
@@ -114,6 +114,10 @@ type ProviderSubsystemsConfig struct {
 	// In lotus-miner this was run as part of PreCommit2 (TreeD was run in PreCommit1).
 	EnableSealSDRTrees   bool
 	SealSDRTreesMaxTasks int
+
+	// EnableSendPrecommitMsg enables the sending of precommit messages to the chain
+	// from this lotus-provider instance.
+	EnableSendPrecommitMsg bool
 }
 
 type DAGStoreConfig struct {
diff --git a/provider/builder.go b/provider/builder.go
index cff387970..d49333965 100644
--- a/provider/builder.go
+++ b/provider/builder.go
@@ -20,12 +20,10 @@ import (
 //var log = logging.Logger("provider")
 
 func WindowPostScheduler(ctx context.Context, fc config.LotusProviderFees, pc config.ProvingConfig,
-	api api.FullNode, verif storiface.Verifier, lw *sealer.LocalWorker, sender *lpmessage.Sender,
+	api api.FullNode, verif storiface.Verifier, lw *sealer.LocalWorker, sender *lpmessage.Sender, chainSched *chainsched.ProviderChainSched,
 	as *multictladdr.MultiAddressSelector, addresses map[dtypes.MinerAddress]bool, db *harmonydb.DB,
 	stor paths.Store, idx paths.SectorIndex, max int) (*lpwindow.WdPostTask, *lpwindow.WdPostSubmitTask, *lpwindow.WdPostRecoverDeclareTask, error) {
 
-	chainSched := chainsched.New(api)
-
 	// todo config
 	ft := lpwindow.NewSimpleFaultTracker(stor, idx, 32, 5*time.Second, 300*time.Second)
 
@@ -44,7 +42,5 @@ func WindowPostScheduler(ctx context.Context, fc config.LotusProviderFees, pc co
 		return nil, nil, nil, err
 	}
 
-	go chainSched.Run(ctx)
-
 	return computeTask, submitTask, recoverTask, nil
 }
diff --git a/provider/lpmessage/watch.go b/provider/lpmessage/watch.go
index 5f98a9a0c..ee8d33237 100644
--- a/provider/lpmessage/watch.go
+++ b/provider/lpmessage/watch.go
@@ -24,7 +24,7 @@ type MessageWaiterApi interface {
 	ChainGetMessage(ctx context.Context, mc cid.Cid) (*types.Message, error)
 }
 
-type MessageWaiter struct {
+type MessageWatcher struct {
 	db  *harmonydb.DB
 	ht  *harmonytask.TaskEngine
 	api MessageWaiterApi
@@ -35,8 +35,8 @@ type MessageWaiter struct {
 	bestTs   atomic.Pointer[types.TipSetKey]
 }
 
-func NewMessageWaiter(db *harmonydb.DB, ht *harmonytask.TaskEngine, pcs *chainsched.ProviderChainSched, api MessageWaiterApi) (*MessageWaiter, error) {
-	mw := &MessageWaiter{
+func NewMessageWatcher(db *harmonydb.DB, ht *harmonytask.TaskEngine, pcs *chainsched.ProviderChainSched, api MessageWaiterApi) (*MessageWatcher, error) {
+	mw := &MessageWatcher{
 		db:       db,
 		ht:       ht,
 		api:      api,
@@ -51,7 +51,7 @@ func NewMessageWaiter(db *harmonydb.DB, ht *harmonytask.TaskEngine, pcs *chainsc
 	return mw, nil
 }
 
-func (mw *MessageWaiter) run() {
+func (mw *MessageWatcher) run() {
 	defer close(mw.stopped)
 
 	for {
@@ -65,7 +65,7 @@ func (mw *MessageWaiter) run() {
 	}
 }
 
-func (mw *MessageWaiter) update() {
+func (mw *MessageWatcher) update() {
 	ctx := context.Background()
 
 	tsk := *mw.bestTs.Load()
@@ -189,7 +189,7 @@ func (mw *MessageWaiter) update() {
 	}
 }
 
-func (mw *MessageWaiter) Stop(ctx context.Context) error {
+func (mw *MessageWatcher) Stop(ctx context.Context) error {
 	close(mw.stopping)
 	select {
 	case <-mw.stopped:
@@ -200,7 +200,7 @@ func (mw *MessageWaiter) Stop(ctx context.Context) error {
 	return nil
 }
 
-func (mw *MessageWaiter) processHeadChange(ctx context.Context, revert *types.TipSet, apply *types.TipSet) error {
+func (mw *MessageWatcher) processHeadChange(ctx context.Context, revert *types.TipSet, apply *types.TipSet) error {
 	best := apply.Key()
 	mw.bestTs.Store(&best)
 	select {
diff --git a/provider/lpseal/poller.go b/provider/lpseal/poller.go
index 2d2b035a1..f1ba84728 100644
--- a/provider/lpseal/poller.go
+++ b/provider/lpseal/poller.go
@@ -70,8 +70,7 @@ func (s *SealPoller) poll(ctx context.Context) error {
 		TaskPrecommitMsg  *int64 `db:"task_id_precommit_msg"`
 		AfterPrecommitMsg bool   `db:"after_precommit_msg"`
 
-		TaskPrecommitMsgWait     *int64 `db:"task_id_precommit_msg_wait"`
-		AfterPrecommitMsgSuccess bool   `db:"after_precommit_msg_success"`
+		AfterPrecommitMsgSuccess bool `db:"after_precommit_msg_success"`
 
 		TaskPoRep  *int64 `db:"task_id_porep"`
 		PoRepProof []byte `db:"porep_proof"`
@@ -93,7 +92,7 @@ func (s *SealPoller) poll(ctx context.Context) error {
        task_id_tree_c, after_tree_c,
        task_id_tree_r, after_tree_r,
        task_id_precommit_msg, after_precommit_msg,
-       task_id_precommit_msg_wait, after_precommit_msg_success,
+       after_precommit_msg_success,
        task_id_porep, porep_proof,
        task_id_commit_msg, after_commit_msg,
        task_id_commit_msg_wait, after_commit_msg_success,
@@ -150,7 +149,11 @@ func (s *SealPoller) poll(ctx context.Context) error {
 			})
 		}
 
-		if task.TaskPrecommitMsgWait == nil && task.AfterPrecommitMsg {
+		if task.TaskPrecommitMsg != nil && !task.AfterPrecommitMsg {
+
+		}
+
+		if task.AfterPrecommitMsg {
 			// todo start precommit msg wait task
 		}
 
diff --git a/provider/lpseal/task_submit_precommit.go b/provider/lpseal/task_submit_precommit.go
index 198d53e43..6b926f8f5 100644
--- a/provider/lpseal/task_submit_precommit.go
+++ b/provider/lpseal/task_submit_precommit.go
@@ -32,6 +32,17 @@ type SubmitPrecommitTask struct {
 	maxFee types.FIL
 }
 
+func NewSubmitPrecommitTask(sp *SealPoller, db *harmonydb.DB, api SubmitPrecommitTaskApi, sender *lpmessage.Sender, maxFee types.FIL) *SubmitPrecommitTask {
+	return &SubmitPrecommitTask{
+		sp:     sp,
+		db:     db,
+		api:    api,
+		sender: sender,
+
+		maxFee: maxFee,
+	}
+}
+
 func (s *SubmitPrecommitTask) Do(taskID harmonytask.TaskID, stillOwned func() bool) (done bool, err error) {
 	ctx := context.Background()
 
diff --git a/provider/lpwindow/compute_task.go b/provider/lpwindow/compute_task.go
index 9fc4afe4f..08f99e3e9 100644
--- a/provider/lpwindow/compute_task.go
+++ b/provider/lpwindow/compute_task.go
@@ -102,8 +102,10 @@ func NewWdPostTask(db *harmonydb.DB,
 		max:    max,
 	}
 
-	if err := pcs.AddHandler(t.processHeadChange); err != nil {
-		return nil, err
+	if pcs != nil {
+		if err := pcs.AddHandler(t.processHeadChange); err != nil {
+			return nil, err
+		}
 	}
 
 	return t, nil
diff --git a/provider/lpwindow/recover_task.go b/provider/lpwindow/recover_task.go
index 076ed51c1..27c501dde 100644
--- a/provider/lpwindow/recover_task.go
+++ b/provider/lpwindow/recover_task.go
@@ -77,8 +77,10 @@ func NewWdPostRecoverDeclareTask(sender *lpmessage.Sender,
 		actors:                     actors,
 	}
 
-	if err := pcs.AddHandler(t.processHeadChange); err != nil {
-		return nil, err
+	if pcs != nil {
+		if err := pcs.AddHandler(t.processHeadChange); err != nil {
+			return nil, err
+		}
 	}
 
 	return t, nil
diff --git a/provider/lpwindow/submit_task.go b/provider/lpwindow/submit_task.go
index d6937354b..8d39c40ab 100644
--- a/provider/lpwindow/submit_task.go
+++ b/provider/lpwindow/submit_task.go
@@ -62,8 +62,10 @@ func NewWdPostSubmitTask(pcs *chainsched.ProviderChainSched, send *lpmessage.Sen
 		as:                  as,
 	}
 
-	if err := pcs.AddHandler(res.processHeadChange); err != nil {
-		return nil, err
+	if pcs != nil {
+		if err := pcs.AddHandler(res.processHeadChange); err != nil {
+			return nil, err
+		}
 	}
 
 	return res, nil