diff --git a/src/models/task.ts b/src/models/task.ts
index ac06bf8..a9dc840 100644
--- a/src/models/task.ts
+++ b/src/models/task.ts
@@ -15,6 +15,7 @@ const TaskSchema = new mongoose.Schema<ITask, TaskModel, ITaskMethods>({
 		enum: ['open'] // TODO - What else is there?
 	},
 	title_id: String,
+	title_id_hash: String,
 	description: Number,
 	created: BigInt,
 	updated: BigInt
diff --git a/src/services/npdi.ts b/src/services/npdi.ts
index 48f3942..9ccff48 100644
--- a/src/services/npdi.ts
+++ b/src/services/npdi.ts
@@ -6,11 +6,12 @@ import { getCdnFileAsStream, streamFileToResponse } from '@/cdn';
 
 const npdi = express.Router();
 
-npdi.get('/p01/data/1/:titleHash/:dataID/:fileHash', async (request, response) => {
-	const { dataID } = request.params;
+npdi.get('/p01/data/1/:titleIdHash/:dataId/:fileHash', async (request, response) => {
+	const { dataId, fileHash } = request.params;
 
 	const file = await File.findOne({
-		data_id: dataID
+		data_id: dataId,
+		hash: fileHash
 	});
 	if (!file) {
 		return response.sendStatus(404);
diff --git a/src/services/npts.ts b/src/services/npts.ts
index ff0235b..073138f 100644
--- a/src/services/npts.ts
+++ b/src/services/npts.ts
@@ -10,12 +10,12 @@ import { File } from '@/models/file';
 
 const npts = express.Router();
 
-npts.get('/p01/tasksheet/:id/:hash/:taskId', async (request, response) => {
-	const { id, taskId } = request.params;
+npts.get('/p01/tasksheet/:id/:titleIdHash/:taskId', async (request, response) => {
+	const { titleIdHash, taskId } = request.params;
 
 	const task = await Task.findOne({
-		title_id: id,
-		id: taskId
+		id: taskId,
+		title_id_hash: titleIdHash
 	});
 	if (!task) {
 		return response.sendStatus(404);
diff --git a/src/types/mongoose/task.ts b/src/types/mongoose/task.ts
index 9204472..73ae894 100644
--- a/src/types/mongoose/task.ts
+++ b/src/types/mongoose/task.ts
@@ -8,6 +8,7 @@ export interface ITask {
 	creator_pid: number;
 	status: 'open'; // TODO - Make this a union. What else is there?
 	title_id: string;
+	title_id_hash: string;
 	description: string;
 	created: bigint;
 	updated: bigint;