diff --git a/packages/server/src/download-request/download-request.module.ts b/packages/server/src/download-request/download-request.module.ts
index acfe5d3..700e4b0 100644
--- a/packages/server/src/download-request/download-request.module.ts
+++ b/packages/server/src/download-request/download-request.module.ts
@@ -16,6 +16,8 @@ import { StudyModule } from 'src/study/study.module';
 import { StudyDownloadRequestResolver } from './resolvers/study-download-request.resolver';
 import { StudyDownloadService } from './services/study-download-request.service';
 import { TagModule } from '../tag/tag.module';
+import { StudyDownloadRequestPipe } from './pipes/study-download-request.pipe';
+import { DatasetDownloadRequestPipe } from './pipes/dataset-download-request.pipe';
 
 @Module({
   imports: [
@@ -38,7 +40,9 @@ import { TagModule } from '../tag/tag.module';
     CreateDatasetDownloadPipe,
     CreateStudyDownloadPipe,
     StudyDownloadRequestResolver,
-    StudyDownloadService
+    StudyDownloadService,
+    StudyDownloadRequestPipe,
+    DatasetDownloadRequestPipe
   ]
 })
 export class DownloadRequestModule {}
diff --git a/packages/server/src/download-request/models/dataset-download-request.model.ts b/packages/server/src/download-request/models/dataset-download-request.model.ts
index f3c074d..edef74c 100644
--- a/packages/server/src/download-request/models/dataset-download-request.model.ts
+++ b/packages/server/src/download-request/models/dataset-download-request.model.ts
@@ -1,7 +1,15 @@
 import { Schema, Prop, SchemaFactory } from '@nestjs/mongoose';
 import { Document } from 'mongoose';
 import { DownloadStatus, DownloadRequest } from './download-request.model';
-import { ObjectType, Field } from '@nestjs/graphql';
+import { ObjectType, Field, registerEnumType } from '@nestjs/graphql';
+
+export enum DatasetDownloadField {
+  ENTRY_ZIP = 'ENTRY_ZIP'
+}
+
+registerEnumType(DatasetDownloadField, {
+  name: 'DatasetDownloadField'
+});
 
 @Schema()
 @ObjectType()
@@ -34,6 +42,12 @@ export class DatasetDownloadRequest implements DownloadRequest {
 
   @Prop({ required: false })
   webhookPayloadLocation?: string;
+
+  @Prop({ required: true })
+  entryZipComplete: boolean;
+
+  @Prop({ required: true })
+  verificationCode: string;
 }
 
 export type DatasetDownloadRequestDocument = Document & DatasetDownloadRequest;
diff --git a/packages/server/src/download-request/models/study-download-request.model.ts b/packages/server/src/download-request/models/study-download-request.model.ts
index b0aa0da..8138196 100644
--- a/packages/server/src/download-request/models/study-download-request.model.ts
+++ b/packages/server/src/download-request/models/study-download-request.model.ts
@@ -1,7 +1,16 @@
 import { Schema, Prop, SchemaFactory } from '@nestjs/mongoose';
 import { Document } from 'mongoose';
 import { DownloadRequest, DownloadStatus } from './download-request.model';
-import { Field, ObjectType } from '@nestjs/graphql';
+import { Field, ObjectType, registerEnumType } from '@nestjs/graphql';
+
+export enum StudyDownloadField {
+  ENTRY_ZIP = 'ENTRY_ZIP',
+  TAGGED_ENTRIES_ZIP = 'TAGGED_ENTRIES_ZIP'
+}
+
+registerEnumType(StudyDownloadField, {
+  name: 'StudyDownloadField'
+});
 
 @Schema()
 @ObjectType()
@@ -54,6 +63,15 @@ export class StudyDownloadRequest implements DownloadRequest {
   /** Webhook payload to be used when the zipping of tagged entries is complete */
   @Prop({ required: false })
   taggedEntryWebhookPayloadLocation?: string;
+
+  @Prop({ required: true })
+  entryZipComplete: boolean;
+
+  @Prop({ required: true })
+  taggedEntryZipComplete: boolean;
+
+  @Prop({ required: true })
+  verificationCode: string;
 }
 
 export type StudyDownloadRequestDocument = Document & StudyDownloadRequest;
diff --git a/packages/server/src/download-request/pipes/dataset-download-request.pipe.ts b/packages/server/src/download-request/pipes/dataset-download-request.pipe.ts
new file mode 100644
index 0000000..8c33ee2
--- /dev/null
+++ b/packages/server/src/download-request/pipes/dataset-download-request.pipe.ts
@@ -0,0 +1,16 @@
+import { Injectable, PipeTransform, BadRequestException } from '@nestjs/common';
+import { DatasetDownloadRequest } from '../models/dataset-download-request.model';
+import { DatasetDownloadService } from '../services/dataset-download-request.service';
+
+@Injectable()
+export class DatasetDownloadRequestPipe implements PipeTransform<string, Promise<DatasetDownloadRequest>> {
+  constructor(private readonly downloadRequestService: DatasetDownloadService) {}
+
+  async transform(value: string): Promise<DatasetDownloadRequest> {
+    const downloadRequest = await this.downloadRequestService.find(value);
+    if (!downloadRequest) {
+      throw new BadRequestException(`Dataset download request with id ${value} not found`);
+    }
+    return downloadRequest;
+  }
+}
diff --git a/packages/server/src/download-request/pipes/study-download-request.pipe.ts b/packages/server/src/download-request/pipes/study-download-request.pipe.ts
new file mode 100644
index 0000000..0b08dc0
--- /dev/null
+++ b/packages/server/src/download-request/pipes/study-download-request.pipe.ts
@@ -0,0 +1,16 @@
+import { BadRequestException, Injectable, PipeTransform } from '@nestjs/common';
+import { StudyDownloadRequest } from '../models/study-download-request.model';
+import { StudyDownloadService } from '../services/study-download-request.service';
+
+@Injectable()
+export class StudyDownloadRequestPipe implements PipeTransform<string, Promise<StudyDownloadRequest>> {
+  constructor(private readonly downloadService: StudyDownloadService) {}
+
+  async transform(value: string): Promise<StudyDownloadRequest> {
+    const downloadRequest = await this.downloadService.find(value);
+    if (!downloadRequest) {
+      throw new BadRequestException(`Study down with the id ${value} not found`);
+    }
+    return downloadRequest;
+  }
+}
diff --git a/packages/server/src/download-request/resolvers/dataset-download-request.resolver.ts b/packages/server/src/download-request/resolvers/dataset-download-request.resolver.ts
index 04ad498..354905f 100644
--- a/packages/server/src/download-request/resolvers/dataset-download-request.resolver.ts
+++ b/packages/server/src/download-request/resolvers/dataset-download-request.resolver.ts
@@ -1,8 +1,8 @@
 import { Resolver, Mutation, Args, Query, ID, ResolveField, Parent } from '@nestjs/graphql';
 import { CreateDatasetDownloadRequest } from '../dtos/dataset-download-request-create.dto';
-import { DatasetDownloadRequest } from '../models/dataset-download-request.model';
+import { DatasetDownloadRequest, DatasetDownloadField } from '../models/dataset-download-request.model';
 import { DatasetDownloadService } from '../services/dataset-download-request.service';
-import { UseGuards } from '@nestjs/common';
+import { UnauthorizedException, UseGuards } from '@nestjs/common';
 import { JwtAuthGuard } from '../../jwt/jwt.guard';
 import { OrganizationContext } from 'src/organization/organization.context';
 import { Organization } from '../../organization/organization.model';
@@ -10,6 +10,7 @@ import { OrganizationGuard } from '../../organization/organization.guard';
 import { CreateDatasetDownloadPipe } from '../pipes/dataset-download-request-create.pipe';
 import { Dataset } from '../../dataset/dataset.model';
 import { DatasetPipe } from '../../dataset/pipes/dataset.pipe';
+import { DatasetDownloadRequestPipe } from '../pipes/dataset-download-request.pipe';
 
 @UseGuards(JwtAuthGuard, OrganizationGuard)
 @Resolver(() => DatasetDownloadRequest)
@@ -34,6 +35,20 @@ export class DatasetDownloadRequestResolver {
     return this.datasetDownloadService.getDatasetDownloadRequests(dataset);
   }
 
+  @Mutation(() => Boolean)
+  async markDatasetFieldComplete(
+    @Args('downloadRequest', { type: () => ID }, DatasetDownloadRequestPipe) downloadRequest: DatasetDownloadRequest,
+    @Args('datasetField', { type: () => DatasetDownloadField }) datasetField: DatasetDownloadField,
+    @Args('code') verificationCode: string
+  ): Promise<boolean> {
+    if (verificationCode !== downloadRequest.verificationCode) {
+      throw new UnauthorizedException(`Invalid verification code`);
+    }
+
+    await this.datasetDownloadService.markFieldComplete(downloadRequest, datasetField);
+    return true;
+  }
+
   @ResolveField(() => String)
   async entryZip(@Parent() downloadRequest: DatasetDownloadRequest): Promise<string> {
     return this.datasetDownloadService.getEntryZipURL(downloadRequest);
diff --git a/packages/server/src/download-request/resolvers/study-download-request.resolver.ts b/packages/server/src/download-request/resolvers/study-download-request.resolver.ts
index c2aa363..32a3dc6 100644
--- a/packages/server/src/download-request/resolvers/study-download-request.resolver.ts
+++ b/packages/server/src/download-request/resolvers/study-download-request.resolver.ts
@@ -1,8 +1,8 @@
 import { Resolver, Mutation, Args, ResolveField, Parent, ID, Query } from '@nestjs/graphql';
 import { JwtAuthGuard } from '../../jwt/jwt.guard';
 import { OrganizationGuard } from '../../organization/organization.guard';
-import { UseGuards } from '@nestjs/common';
-import { StudyDownloadRequest } from '../models/study-download-request.model';
+import { UnauthorizedException, UseGuards } from '@nestjs/common';
+import { StudyDownloadField, StudyDownloadRequest } from '../models/study-download-request.model';
 import { StudyDownloadService } from '../services/study-download-request.service';
 import { CreateStudyDownloadPipe } from '../pipes/study-download-request-create.pipe';
 import { CreateStudyDownloadRequest } from '../dtos/study-download-request-create.dto';
@@ -10,6 +10,7 @@ import { OrganizationContext } from '../../organization/organization.context';
 import { Organization } from '../../organization/organization.model';
 import { StudyPipe } from '../../study/pipes/study.pipe';
 import { Study } from '../../study/study.model';
+import { StudyDownloadRequestPipe } from '../pipes/study-download-request.pipe';
 
 @UseGuards(JwtAuthGuard, OrganizationGuard)
 @Resolver(() => StudyDownloadRequest)
@@ -29,6 +30,20 @@ export class StudyDownloadRequestResolver {
     return this.studyDownloadService.getStudyDownloads(study);
   }
 
+  @Mutation(() => Boolean)
+  async markStudyFieldComplete(
+    @Args('downloadRequest', { type: () => ID }, StudyDownloadRequestPipe) downloadRequest: StudyDownloadRequest,
+    @Args('studyField', { type: () => StudyDownloadField }) studyField: StudyDownloadField,
+    @Args('code') verificationCode: string
+  ): Promise<boolean> {
+    if (downloadRequest.verificationCode !== verificationCode) {
+      throw new UnauthorizedException('Invalid verification code');
+    }
+
+    await this.studyDownloadService.markStudyFieldComplete(downloadRequest, studyField);
+    return true;
+  }
+
   @ResolveField(() => String)
   async entryZip(@Parent() downloadRequest: StudyDownloadRequest): Promise<string> {
     return this.studyDownloadService.getEntryZipUrl(downloadRequest);
diff --git a/packages/server/src/download-request/services/dataset-download-request.service.ts b/packages/server/src/download-request/services/dataset-download-request.service.ts
index 36adc3e..4240b94 100644
--- a/packages/server/src/download-request/services/dataset-download-request.service.ts
+++ b/packages/server/src/download-request/services/dataset-download-request.service.ts
@@ -8,9 +8,10 @@ import { BucketFactory } from '../../bucket/bucket-factory.service';
 import { EntryService } from '../../entry/services/entry.service';
 import { Organization } from '../../organization/organization.model';
 import { CreateDatasetDownloadRequest } from '../dtos/dataset-download-request-create.dto';
-import { DatasetDownloadRequest } from '../models/dataset-download-request.model';
+import { DatasetDownloadField, DatasetDownloadRequest } from '../models/dataset-download-request.model';
 import { DownloadRequest, DownloadStatus } from '../models/download-request.model';
 import { DownloadRequestService } from './download-request.service';
+import { randomUUID } from 'crypto';
 
 @Injectable()
 export class DatasetDownloadService {
@@ -33,7 +34,9 @@ export class DatasetDownloadService {
       ...downloadRequest,
       date: new Date(),
       status: DownloadStatus.IN_PROGRESS,
-      organization: organization._id
+      organization: organization._id,
+      entryZipComplete: false,
+      verificationCode: randomUUID()
     });
 
     const bucketLocation = `${this.downloadService.getPrefix()}/${request._id}`;
@@ -88,4 +91,21 @@ export class DatasetDownloadService {
       new Date(Date.now() + this.expiration)
     );
   }
+
+  async find(id: string): Promise<DatasetDownloadRequest | null> {
+    return this.downloadRequestModel.findById({ _id: id });
+  }
+
+  async markFieldComplete(downloadRequest: DatasetDownloadRequest, field: DatasetDownloadField): Promise<void> {
+    switch (field) {
+      case DatasetDownloadField.ENTRY_ZIP:
+        await this.downloadRequestModel.updateOne({ _id: downloadRequest._id }, { $set: { entryZipComplete: true } });
+        break;
+      default:
+        throw new Error(`Unknown dataset download field ${field}`);
+    }
+
+    // With only one field supported, can mark the download as complete
+    await this.downloadRequestModel.updateOne({ _id: downloadRequest._id }, { $set: { status: DownloadStatus.READY } });
+  }
 }
diff --git a/packages/server/src/download-request/services/study-download-request.service.ts b/packages/server/src/download-request/services/study-download-request.service.ts
index 0e5c9fb..ed86318 100644
--- a/packages/server/src/download-request/services/study-download-request.service.ts
+++ b/packages/server/src/download-request/services/study-download-request.service.ts
@@ -1,5 +1,5 @@
 import { Injectable } from '@nestjs/common';
-import { StudyDownloadRequest } from '../models/study-download-request.model';
+import { StudyDownloadField, StudyDownloadRequest } from '../models/study-download-request.model';
 import { InjectModel } from '@nestjs/mongoose';
 import { Model } from 'mongoose';
 import { CreateStudyDownloadRequest } from '../dtos/study-download-request-create.dto';
@@ -15,6 +15,7 @@ import { VideoFieldService } from '../../tag/services/video-field.service';
 import { BucketObjectAction } from 'src/bucket/bucket';
 import { Entry } from 'src/entry/models/entry.model';
 import { Study } from 'src/study/study.model';
+import { randomUUID } from 'crypto';
 
 @Injectable()
 export class StudyDownloadService {
@@ -39,7 +40,10 @@ export class StudyDownloadService {
       ...downloadRequest,
       date: new Date(),
       status: DownloadStatus.IN_PROGRESS,
-      organization: organization._id
+      organization: organization._id,
+      entryZipComplete: false,
+      taggedEntryZipComplete: false,
+      verificationCode: randomUUID()
     });
 
     const bucketLocation = `${this.downloadService.getPrefix()}/${request._id}`;
@@ -102,6 +106,39 @@ export class StudyDownloadService {
     return this.downloadRequestModel.find({ study: study._id });
   }
 
+  async find(id: string): Promise<StudyDownloadRequest | null> {
+    return this.downloadRequestModel.findById(id);
+  }
+
+  /**
+   * Handles flagging when a field is complete and then updating the status when all fields are complete
+   */
+  async markStudyFieldComplete(downloadRequest: StudyDownloadRequest, studyField: StudyDownloadField): Promise<void> {
+    // Mark the field as complete
+    switch (studyField) {
+      case StudyDownloadField.ENTRY_ZIP:
+        console.log('here');
+        await this.downloadRequestModel.updateOne({ _id: downloadRequest._id }, { $set: { entryZipComplete: true } });
+        break;
+      case StudyDownloadField.TAGGED_ENTRIES_ZIP:
+        await this.downloadRequestModel.updateOne(
+          { _id: downloadRequest._id },
+          { $set: { taggedEntryZipComplete: true } }
+        );
+        break;
+      default:
+        throw new Error(`Unknown field ${studyField}`);
+    }
+
+    const request = (await this.downloadRequestModel.findOne({ _id: downloadRequest._id }))!;
+
+    // Check if all components are complete
+    if (request.taggedEntryZipComplete && request.entryZipComplete) {
+      // Mark as complete
+      await this.downloadRequestModel.updateOne({ _id: request._id }, { $set: { status: DownloadStatus.READY } });
+    }
+  }
+
   /**
    * Handles generating the CSV for the tag data. This approach is a sub-optimal one.
    *