diff --git a/db/db.go b/db/db.go
index 1b6f428..c1acbd5 100644
--- a/db/db.go
+++ b/db/db.go
@@ -3,6 +3,8 @@ package db
 import (
 	"database/sql"
 
+	"github.com/lbryio/reflector.go/types"
+
 	"github.com/lbryio/errors.go"
 	qtools "github.com/lbryio/query.go"
 
@@ -12,8 +14,9 @@ import (
 
 type DB interface {
 	Connect(string) error
-	AddBlob(string, int) error
 	HasBlob(string) (bool, error)
+	AddBlob(string, int, bool) error
+	AddSDBlob(string, int, types.SdBlob) error
 }
 
 type SQL struct {
@@ -40,7 +43,7 @@ func (s *SQL) Connect(dsn string) error {
 	return errors.Err(s.conn.Ping())
 }
 
-func (s *SQL) AddBlob(hash string, length int) error {
+func (s *SQL) AddBlob(hash string, length int, stored bool) error {
 	if s.conn == nil {
 		return errors.Err("not connected")
 	}
@@ -49,8 +52,8 @@ func (s *SQL) AddBlob(hash string, length int) error {
 		return errors.Err("length must be positive")
 	}
 
-	query := "INSERT IGNORE INTO blobs (hash, length) VALUES (?,?)"
-	args := []interface{}{hash, length}
+	query := "INSERT INTO blob_ (hash, stored, length) VALUES (?,?,?) ON DUPLICATE KEY UPDATE stored = (stored or VALUES(stored))"
+	args := []interface{}{hash, stored, length}
 
 	logQuery(query, args...)
 
@@ -72,8 +75,8 @@ func (s *SQL) HasBlob(hash string) (bool, error) {
 		return false, errors.Err("not connected")
 	}
 
-	query := "SELECT EXISTS(SELECT 1 FROM blobs WHERE hash = ?)"
-	args := []interface{}{hash}
+	query := "SELECT EXISTS(SELECT 1 FROM blob_ WHERE hash = ? AND stored = ?)"
+	args := []interface{}{hash, true}
 
 	logQuery(query, args...)
 
@@ -84,3 +87,94 @@ func (s *SQL) HasBlob(hash string) (bool, error) {
 
 	return exists, errors.Err(err)
 }
+
+func (s *SQL) AddSDBlob(sdHash string, sdBlobLength int, sdBlob types.SdBlob) error {
+	if s.conn == nil {
+		return errors.Err("not connected")
+	}
+
+	// TODO: should do all this in transaction
+
+	// insert sd blob
+	err := s.AddBlob(sdHash, sdBlobLength, true)
+	if err != nil {
+		return err
+	}
+
+	// insert stream
+	query := "INSERT IGNORE INTO stream (hash, sd_hash) VALUES (?,?)"
+	args := []interface{}{sdBlob.StreamHash, sdHash}
+
+	logQuery(query, args...)
+
+	stmt, err := s.conn.Prepare(query)
+	if err != nil {
+		return errors.Err(err)
+	}
+
+	_, err = stmt.Exec(args...)
+	if err != nil {
+		return errors.Err(err)
+	}
+
+	// insert content blobs and connect them to stream
+	for _, contentBlob := range sdBlob.Blobs {
+		if contentBlob.BlobHash == "" {
+			// null terminator blob
+			continue
+		}
+
+		err := s.AddBlob(contentBlob.BlobHash, contentBlob.Length, false)
+		if err != nil {
+			return err
+		}
+
+		query := "INSERT IGNORE INTO stream_blob (stream_hash, blob_hash, num) VALUES (?,?,?)"
+		args := []interface{}{sdBlob.StreamHash, contentBlob.BlobHash, contentBlob.BlobNum}
+
+		logQuery(query, args...)
+
+		stmt, err := s.conn.Prepare(query)
+		if err != nil {
+			return errors.Err(err)
+		}
+
+		_, err = stmt.Exec(args...)
+		if err != nil {
+			return errors.Err(err)
+		}
+	}
+
+	return nil
+}
+
+func schema() {
+	_ = `
+CREATE TABLE blob_ (
+  hash char(96) NOT NULL,
+  stored TINYINT(1) NOT NULL DEFAULT 0,
+  length bigint(20) unsigned DEFAULT NULL,
+  last_announced_at datetime DEFAULT NULL,
+  PRIMARY KEY (hash),
+  KEY last_announced_at_idx (last_announced_at)
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+CREATE TABLE stream (
+  hash char(96) NOT NULL,
+  sd_hash char(96) NOT NULL,
+  PRIMARY KEY (hash),
+  KEY sd_hash_idx (sd_hash),
+  FOREIGN KEY stream_sd_hash_blob_hash (sd_hash) REFERENCES blob_ (hash) ON DELETE RESTRICT ON UPDATE CASCADE
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+CREATE TABLE stream_blob (
+  stream_hash char(96) NOT NULL,
+  blob_hash char(96) NOT NULL,
+  num int NOT NULL,
+  PRIMARY KEY (stream_hash, blob_hash),
+  FOREIGN KEY stream_hash_stream_hash (stream_hash) REFERENCES stream (hash) ON DELETE CASCADE ON UPDATE CASCADE,
+  FOREIGN KEY blob_hash_blob_hash (blob_hash) REFERENCES blob_ (hash) ON DELETE CASCADE ON UPDATE CASCADE
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+`
+}
diff --git a/reflector/server.go b/reflector/server.go
index 957d2e5..14b47ba 100644
--- a/reflector/server.go
+++ b/reflector/server.go
@@ -115,9 +115,14 @@ func (s *Server) receiveBlob(conn net.Conn) error {
 		return errors.Err("hash of received blob data does not match hash from send request")
 		// this can also happen if the blob size is wrong, because the server will read the wrong number of bytes from the stream
 	}
+
 	log.Println("Got blob " + blobHash[:8])
 
-	err = s.store.Put(blobHash, blob)
+	if isSdBlob {
+		err = s.store.PutSD(blobHash, blob)
+	} else {
+		err = s.store.Put(blobHash, blob)
+	}
 	if err != nil {
 		return err
 	}
diff --git a/reflector/shared.go b/reflector/shared.go
index ad11d38..0072cb7 100644
--- a/reflector/shared.go
+++ b/reflector/shared.go
@@ -54,18 +54,3 @@ func getBlobHash(blob []byte) string {
 	hashBytes := sha512.Sum384(blob)
 	return hex.EncodeToString(hashBytes[:])
 }
-
-// can be used to read the sd blob and then return a list of blobs that are actually missing
-type sdBlobContents struct {
-	StreamName string `json:"stream_name"`
-	Blobs      []struct {
-		Length   int    `json:"length"`
-		BlobNum  int    `json:"blob_num"`
-		BlobHash string `json:"blob_hash,omitempty"`
-		Iv       string `json:"iv"`
-	} `json:"blobs"`
-	StreamType        string `json:"stream_type"`
-	Key               string `json:"key"`
-	SuggestedFileName string `json:"suggested_file_name"`
-	StreamHash        string `json:"stream_hash"`
-}
diff --git a/store/dbbacked.go b/store/dbbacked.go
index 9ac29b7..b87ea49 100644
--- a/store/dbbacked.go
+++ b/store/dbbacked.go
@@ -1,6 +1,12 @@
 package store
 
-import "github.com/lbryio/reflector.go/db"
+import (
+	"encoding/json"
+
+	"github.com/go-errors/errors"
+	"github.com/lbryio/reflector.go/db"
+	"github.com/lbryio/reflector.go/types"
+)
 
 type DBBackedS3Store struct {
 	s3 *S3BlobStore
@@ -25,5 +31,23 @@ func (d *DBBackedS3Store) Put(hash string, blob []byte) error {
 		return err
 	}
 
-	return d.db.AddBlob(hash, len(blob))
+	return d.db.AddBlob(hash, len(blob), true)
+}
+
+func (d *DBBackedS3Store) PutSD(hash string, blob []byte) error {
+	var blobContents types.SdBlob
+	err := json.Unmarshal(blob, &blobContents)
+	if err != nil {
+		return err
+	}
+	if blobContents.StreamHash == "" {
+		return errors.New("sd blob is missing stream hash")
+	}
+
+	err = d.s3.PutSD(hash, blob)
+	if err != nil {
+		return err
+	}
+
+	return d.db.AddSDBlob(hash, len(blob), blobContents)
 }
diff --git a/store/file.go b/store/file.go
index 5d48fdd..0396790 100644
--- a/store/file.go
+++ b/store/file.go
@@ -81,3 +81,7 @@ func (f *FileBlobStore) Put(hash string, blob []byte) error {
 
 	return ioutil.WriteFile(f.path(hash), blob, 0644)
 }
+
+func (f *FileBlobStore) PutSD(hash string, blob []byte) error {
+	return f.Put(hash, blob)
+}
diff --git a/store/s3.go b/store/s3.go
index b7cc40d..78ff838 100644
--- a/store/s3.go
+++ b/store/s3.go
@@ -105,3 +105,7 @@ func (s *S3BlobStore) Put(hash string, blob []byte) error {
 
 	return err
 }
+
+func (s *S3BlobStore) PutSD(hash string, blob []byte) error {
+	return s.Put(hash, blob)
+}
diff --git a/store/store.go b/store/store.go
index 053ee93..43e76ae 100644
--- a/store/store.go
+++ b/store/store.go
@@ -4,4 +4,5 @@ type BlobStore interface {
 	Has(string) (bool, error)
 	Get(string) ([]byte, error)
 	Put(string, []byte) error
+	PutSD(string, []byte) error
 }
diff --git a/types/types.go b/types/types.go
new file mode 100644
index 0000000..8e582e6
--- /dev/null
+++ b/types/types.go
@@ -0,0 +1,15 @@
+package types
+
+type SdBlob struct {
+	StreamName string `json:"stream_name"`
+	Blobs      []struct {
+		Length   int    `json:"length"`
+		BlobNum  int    `json:"blob_num"`
+		BlobHash string `json:"blob_hash,omitempty"`
+		Iv       string `json:"iv"`
+	} `json:"blobs"`
+	StreamType        string `json:"stream_type"`
+	Key               string `json:"key"`
+	SuggestedFileName string `json:"suggested_file_name"`
+	StreamHash        string `json:"stream_hash"`
+}