diff --git a/node/builder.go b/node/builder.go
index 5ef4b5b3e..b9ca72c12 100644
--- a/node/builder.go
+++ b/node/builder.go
@@ -3,6 +3,7 @@ package node
 import (
 	"context"
 	"errors"
+	"github.com/filecoin-project/go-lotus/storage/sealedbstore"
 	"reflect"
 	"time"
 
@@ -232,6 +233,7 @@ func Online() Option {
 		ApplyIf(func(s *Settings) bool { return s.nodeType == nodeStorageMiner },
 			Override(new(*sectorbuilder.SectorBuilder), sectorbuilder.New),
 			Override(new(*sector.Store), sector.NewStore),
+			Override(new(*sealedbstore.Sealedbstore), sealedbstore.NewSealedbstore),
 			Override(new(*storage.Miner), modules.StorageMiner),
 
 			Override(new(dtypes.StagingDAG), modules.StagingDAG),
diff --git a/retrieval/types.go b/retrieval/types.go
index bc19f6468..1c55990e5 100644
--- a/retrieval/types.go
+++ b/retrieval/types.go
@@ -7,14 +7,15 @@ import (
 )
 
 type QueryResponse int
+
 const (
 	Available QueryResponse = iota
 	Unavailable
 )
 
 type RetDealProposal struct {
-	Piece cid.Cid
-	Price types.BigInt
+	Piece   cid.Cid
+	Price   types.BigInt
 	Payment types.SignedVoucher
 }
 
@@ -27,5 +28,3 @@ type RetQueryResponse struct {
 
 	MinPricePerMiB types.BigInt // TODO: check units used for sector size
 }
-
-
diff --git a/storage/sealedbstore/sealedbstore.go b/storage/sealedbstore/sealedbstore.go
index d6472b9a4..0c9d4df4b 100644
--- a/storage/sealedbstore/sealedbstore.go
+++ b/storage/sealedbstore/sealedbstore.go
@@ -1,6 +1,8 @@
 package sealedbstore
 
 import (
+	"github.com/filecoin-project/go-lotus/node/modules/dtypes"
+	"github.com/ipfs/go-datastore/namespace"
 	"sync"
 
 	"github.com/ipfs/go-cid"
@@ -18,21 +20,30 @@ const (
 	SerializationUnixfs0 SealSerialization = 'u'
 )
 
+var dsPrefix = datastore.NewKey("/sealedblocks")
+
 type SealedRef struct {
 	Serialization SealSerialization
 
-	Piece cid.Cid
+	Piece  cid.Cid
 	Offset uint64
-	Size uint32
+	Size   uint32
 }
 
 type Sealedbstore struct {
 	*sector.Store
 
-	keys datastore.Batching
+	keys  datastore.Batching
 	keyLk sync.Mutex
 }
 
+func NewSealedbstore(sectst *sector.Store, ds dtypes.MetadataDS) *Sealedbstore {
+	return &Sealedbstore{
+		Store: sectst,
+		keys:  namespace.Wrap(ds, dsPrefix),
+	}
+}
+
 type UnixfsReader interface {
 	files.File
 
@@ -43,9 +54,9 @@ type UnixfsReader interface {
 
 type refStorer struct {
 	blockReader UnixfsReader
-	writeRef func(cid cid.Cid, offset uint64, size uint32) error
+	writeRef    func(cid cid.Cid, offset uint64, size uint32) error
 
-	pieceRef string
+	pieceRef  string
 	remaining []byte
 }
 
@@ -114,7 +125,7 @@ func (st *Sealedbstore) AddUnixfsPiece(ref cid.Cid, r UnixfsReader, keepAtLeast
 		return 0, err
 	}
 
-	refst := &refStorer{blockReader: r, pieceRef: string(SerializationUnixfs0)+ref.String(), writeRef: st.writeRef}
+	refst := &refStorer{blockReader: r, pieceRef: string(SerializationUnixfs0) + ref.String(), writeRef: st.writeRef}
 
 	return st.Store.AddPiece(refst.pieceRef, uint64(size), refst)
 }