diff --git a/lib/constants.ts b/lib/constants.ts
index 55016b4a1..6406c306f 100644
--- a/lib/constants.ts
+++ b/lib/constants.ts
@@ -32,6 +32,7 @@ export const maximumMetaHeadersSize = 2136;
 export const emptyFileMd5 = 'd41d8cd98f00b204e9800998ecf8427e';
 // Version 2 changes the format of the data location property
 // Version 3 adds the dataStoreName attribute
+// Version 3.1 backport of Version 7 on top of 3
 // Version 4 add the Creation-Time and Content-Language attributes,
 //     and add support for x-ms-meta-* headers in UserMetadata
 // Version 5 adds the azureInfo structure
@@ -41,7 +42,11 @@ export const emptyFileMd5 = 'd41d8cd98f00b204e9800998ecf8427e';
 // any metadata of the object.
 // version 6 also adds the "isPHD" flag that is used to indicate that the master
 // object is a placeholder and is not up to date.
-export const mdModelVersion = 6;
+// Version 7 adds the "bucketOwnerId" attribute to the object metadata.
+// This is set when the owner of the bucket is different from the owner-id of the object.
+// This can happen in cases of cross-account permissions where the object
+// is uploaded by a different account than the one that owns the bucket.
+export const mdModelVersion = 7;
 /*
  * Splitter is used to build the object name for the overview of a
  * multipart upload and to build the object names for each part of a
diff --git a/lib/models/ObjectMD.ts b/lib/models/ObjectMD.ts
index 5492c08b9..4d7baeecb 100644
--- a/lib/models/ObjectMD.ts
+++ b/lib/models/ObjectMD.ts
@@ -37,6 +37,9 @@ export type ReplicationInfo = {
 
 export type ObjectMDData = {
     'owner-display-name': string;
+    // The canonical Id of the account used to create the object.
+    // This can be different than the bucket owner if cross-account
+    // permissions are used to create the object.
     'owner-id': string;
     'cache-control': string;
     'content-disposition': string;
@@ -90,6 +93,9 @@ export type ObjectMDData = {
     // the master is set as a placeholder and gets updated with the new latest
     // version data after a certain amount of time.
     isPHD: boolean;
+    // This is the canonical Id for the bucket owner.
+    // This is only set when it differs from `owner-id`.
+    bucketOwnerId?: string;
 };
 
 /**
@@ -1481,4 +1487,30 @@ export default class ObjectMD {
     getIsPHD() {
         return this._data.isPHD;
     }
+
+    /**
+     * Set bucket owner id
+     * @param canonicalId - bucket owner id
+     * @return itself
+     */
+    setBucketOwnerId(canonicalId: string) {
+        this._data.bucketOwnerId = canonicalId;
+        return this;
+    }
+
+    /**
+     * Returns bucket owner id
+     * @return bucket owner id
+     */
+    getBucketOwnerId() {
+        return this._data.bucketOwnerId;
+    }
+
+    /**
+     * Returns the model version of the object metadata
+     * @return {number|undefined}
+     */
+    getModelVersion(): number | undefined {
+        return this._data['md-model-version'];
+    }
 }
diff --git a/package.json b/package.json
index 975420195..fb8c063aa 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "engines": {
     "node": ">=16"
   },
-  "version": "8.1.158",
+  "version": "8.1.159",
   "description": "Common utilities for the S3 project components",
   "main": "build/index.js",
   "repository": {
diff --git a/tests/unit/models/ObjectMD.spec.js b/tests/unit/models/ObjectMD.spec.js
index 9c5e68025..d5e616be5 100644
--- a/tests/unit/models/ObjectMD.spec.js
+++ b/tests/unit/models/ObjectMD.spec.js
@@ -139,6 +139,9 @@ describe('ObjectMD class setters/getters', () => {
         ['OriginOp', null, ''],
         ['Deleted', null, false],
         ['IsPHD', null, false],
+        ['BucketOwnerId', null, undefined],
+        ['BucketOwnerId', 'abcdef'],
+        ['ModelVersion', null, constants.mdModelVersion],
     ].forEach(test => {
         const property = test[0];
         const testValue = test[1];