diff --git a/DatabaseSchema.md b/DatabaseSchema.md
index abb0539..6814131 100644
--- a/DatabaseSchema.md
+++ b/DatabaseSchema.md
@@ -1,4 +1,4 @@
-# SponsorTimesDB  
+# SponsorTimesDB
 
 [vipUsers](#vipUsers)  
 [sponsorTimes](#sponsorTimes)  
@@ -28,17 +28,17 @@
 | startTime | REAL | not null |
 | endTime | REAL | not null |
 | votes | INTEGER | not null |
-| locked | INTEGER | not nul, default '0' |
+| locked | INTEGER | not null, default '0' |
 | incorrectVotes | INTEGER | not null, default 1 |
 | UUID | TEXT | not null, unique |
 | userID | TEXT | not null |
 | timeSubmitted | INTEGER | not null |
 | views | INTEGER | not null |
 | category | TEXT | not null, default 'sponsor' |
-| service | TEXT | not nul, default 'Youtube' |
-| videoDuration | INTEGER | not nul, default '0' |
-| hidden | INTEGER | not nul, default '0' |
-| reputation | REAL | not nul, default '0' |
+| service | TEXT | not null, default 'Youtube' |
+| videoDuration | INTEGER | not null, default '0' |
+| hidden | INTEGER | not null, default '0' |
+| reputation | REAL | not null, default '0' |
 | shadowHidden | INTEGER | not null |
 | hashedVideoID | TEXT | not null, default '', sha256 |
 
@@ -91,6 +91,7 @@
 | videoID | TEXT | not null |
 | userID | TEXT | not null |
 | category | TEXT | not null |
+| hashedVideoID | TEXT | not null, default '' |
 
 | index | field |
 | -- | :--: |
diff --git a/src/routes/postLockCategories.ts b/src/routes/postLockCategories.ts
index a328367..767fba3 100644
--- a/src/routes/postLockCategories.ts
+++ b/src/routes/postLockCategories.ts
@@ -3,6 +3,7 @@ import {getHash} from '../utils/getHash';
 import {isUserVIP} from '../utils/isUserVIP';
 import {db} from '../databases/databases';
 import {Request, Response} from 'express';
+import { VideoIDHash } from "../types/segments.model";
 
 export async function postLockCategories(req: Request, res: Response): Promise<string[]> {
     // Collect user input data
@@ -56,10 +57,13 @@ export async function postLockCategories(req: Request, res: Response): Promise<s
         return categoriesToMark.indexOf(category) === index;
     });
 
+    // calculate hash of videoID
+    const hashedVideoID: VideoIDHash = getHash(videoID, 1);
+
     // create database entry
     for (const category of categoriesToMark) {
         try {
-            await db.prepare('run', `INSERT INTO "lockCategories" ("videoID", "userID", "category") VALUES(?, ?, ?)`, [videoID, userID, category]);
+            await db.prepare('run', `INSERT INTO "lockCategories" ("videoID", "userID", "category", "hashedVideoID") VALUES(?, ?, ?, ?)`, [videoID, userID, category, hashedVideoID]);
         } catch (err) {
             Logger.error("Error submitting 'lockCategories' marker for category '" + category + "' for video '" + videoID + "'");
             Logger.error(err);
diff --git a/test/cases/lockCategoriesRecords.ts b/test/cases/lockCategoriesRecords.ts
index e462c9e..ae2760a 100644
--- a/test/cases/lockCategoriesRecords.ts
+++ b/test/cases/lockCategoriesRecords.ts
@@ -536,4 +536,42 @@ describe('lockCategoriesRecords', () => {
         })
         .catch(err => done(err));
     });
+
+    it('should be able to get existing category lock', (done: Done) => {
+        const expected = {
+            categories: [
+                'sponsor',
+                'intro',
+                'outro',
+                'shilling'
+            ],
+        };
+
+        fetch(getbaseURL() + "/api/lockCategories?videoID=" + "no-segments-video-id")
+        .then(async res => {
+            if (res.status === 200) {
+                const data = await res.json();
+                if (JSON.stringify(data) === JSON.stringify(expected)) {
+                    done();
+                } else {
+                    done("Incorrect response: expected " + JSON.stringify(expected) + " got " + JSON.stringify(data));
+                }
+            } else {
+                done("Status code was " + res.status);
+            }
+        })
+        .catch(err => done(err));
+    });
+
+    it('Should be able to get hashedVideoID from lock', (done: Done) => {
+        const hashedVideoID = getHash('no-segments-video-id', 1);
+        db.prepare('get', 'SELECT "hashedVideoID" FROM "lockCategories"  WHERE "videoID" = ?', ['no-segments-video-id'])
+        .then(result => {
+            if (result !== hashedVideoID) {
+                done();
+            } else {
+                done("Got unexpected video hash " + result);
+            }
+        });
+    });
 });