diff --git a/lib/api/api.go b/lib/api/api.go
index 456123fdc..6f9451dcc 100644
--- a/lib/api/api.go
+++ b/lib/api/api.go
@@ -1828,6 +1828,7 @@ func fileIntfJSONMap(f protocol.FileIntf) map[string]interface{} {
 		"localFlags":    f.FileLocalFlags(),
 		"platform":      f.PlatformData(),
 		"inodeChange":   f.InodeChangeTime(),
+		"blocksHash":    f.FileBlocksHash(),
 	}
 	if f.HasPermissionBits() {
 		out["permissions"] = fmt.Sprintf("%#o", f.FilePermissions())
diff --git a/lib/db/structs.go b/lib/db/structs.go
index daa514fab..8c3c1f39a 100644
--- a/lib/db/structs.go
+++ b/lib/db/structs.go
@@ -133,6 +133,10 @@ func (f FileInfoTruncated) InodeChangeTime() time.Time {
 	return time.Unix(0, f.InodeChangeNs)
 }
 
+func (f FileInfoTruncated) FileBlocksHash() []byte {
+	return f.BlocksHash
+}
+
 func (f FileInfoTruncated) ConvertToIgnoredFileInfo() protocol.FileInfo {
 	file := f.copyToFileInfo()
 	file.SetIgnored()
diff --git a/lib/protocol/bep_extensions.go b/lib/protocol/bep_extensions.go
index 2290f2cce..4ee23adc5 100644
--- a/lib/protocol/bep_extensions.go
+++ b/lib/protocol/bep_extensions.go
@@ -46,6 +46,7 @@ type FileIntf interface {
 	ModTime() time.Time
 	PlatformData() PlatformData
 	InodeChangeTime() time.Time
+	FileBlocksHash() []byte
 }
 
 func (Hello) Magic() uint32 {
@@ -170,6 +171,10 @@ func (f FileInfo) InodeChangeTime() time.Time {
 	return time.Unix(0, f.InodeChangeNs)
 }
 
+func (f FileInfo) FileBlocksHash() []byte {
+	return f.BlocksHash
+}
+
 // WinsConflict returns true if "f" is the one to choose when it is in
 // conflict with "other".
 func WinsConflict(f, other FileIntf) bool {