diff --git a/proto/mf.proto b/proto/mf.proto
index d18b46c..41e57fc 100644
--- a/proto/mf.proto
+++ b/proto/mf.proto
@@ -28,10 +28,12 @@ message MFFile {
 
 message MFFilePath {
     string path = 1;
-    string ipfsHash = 2; // this is the DAG version that you can `ipfs get`
-    // more info: https://ethereum.stackexchange.com/questions/44506/ipfs-hash-algorithm/53233
-    bytes multiHash = 3; //this must be sha256 for now
-    optional string mimeType = 4;
+    optional repeated MFFileChecksum = 2;
+    optional string mimeType = 3;
+}
+
+message MFFileChecksum {
+    bytes multiHash = 1;
 }
 
 message MFFileInner {