diff --git a/site/gatsby-site/server/fields/common.ts b/site/gatsby-site/server/fields/common.ts
index ec5f70bfc5..a92b38dc09 100644
--- a/site/gatsby-site/server/fields/common.ts
+++ b/site/gatsby-site/server/fields/common.ts
@@ -212,6 +212,7 @@ export const createNotificationsOnNewIncident = async (fullDocument: DBIncident,
         type: 'new-incidents',
         incident_id: incidentId,
         processed: false,
+        created_at: new Date(),
     });
 
     const entityFields: (keyof DBIncident)[] = [
@@ -239,6 +240,7 @@ export const createNotificationsOnNewIncident = async (fullDocument: DBIncident,
             incident_id: incidentId,
             entity_id: entityId,
             processed: false,
+            created_at: new Date(),
         });
     }
 }
@@ -363,6 +365,7 @@ export const logReportHistory = async (updated: DBReport, context: Context) => {
     const reportHistory: DBReportHistory = {
         ...updated,
         modifiedBy: context.user?.id ?? '',
+        created_at: new Date(),
         _id: undefined,
     }
 
@@ -376,6 +379,7 @@ export const logIncidentHistory = async (updated: DBIncident, context: Context)
     const incidentHistory: DBIncidentHistory = {
         ...updated,
         modifiedBy: context.user?.id ?? '',
+        created_at: new Date(),
         _id: undefined,
     }
 
diff --git a/site/gatsby-site/server/fields/reports.ts b/site/gatsby-site/server/fields/reports.ts
index 1d97b4376c..355f553c5f 100644
--- a/site/gatsby-site/server/fields/reports.ts
+++ b/site/gatsby-site/server/fields/reports.ts
@@ -4,6 +4,7 @@ import { generateMutationFields, generateQueryFields, getQueryResolver } from ".
 import { isRole } from "../rules";
 import { linkReportsToIncidents, logReportHistory } from "./common";
 import { ReportType } from "../types/report";
+import { Context, DBReport } from "../interfaces";
 
 
 export const queryFields: GraphQLFieldConfigMap<any, any> = {
@@ -185,10 +186,10 @@ export const mutationFields: GraphQLFieldConfigMap<any, any> = {
                 type: new GraphQLNonNull(CreateVariantInput),
             },
         },
-        resolve: async (source, { input }, context) => {
+        resolve: async (source, { input }, context: Context) => {
 
             const incidents = context.client.db('aiidprod').collection("incidents");
-            const reports = context.client.db('aiidprod').collection("reports");
+            const reports = context.client.db('aiidprod').collection<DBReport>("reports");
 
             const parentIncident = await incidents.findOne({ incident_id: input.incidentId });
 
@@ -196,7 +197,9 @@ export const mutationFields: GraphQLFieldConfigMap<any, any> = {
                 throw `Incident ${input.incidentId} not found`;
             }
 
-            const report_number = (await reports.find({}).sort({ report_number: -1 }).limit(1).next()).report_number + 1;
+            const lastReport = await reports.find({}).sort({ report_number: -1 }).limit(1).next();
+
+            const report_number = lastReport ? lastReport.report_number + 1 : 1;
 
             const now = new Date();
 
@@ -225,9 +228,10 @@ export const mutationFields: GraphQLFieldConfigMap<any, any> = {
                 language: 'en',
                 tags: ['variant:unreviewed'],
                 inputs_outputs: input.variant.inputs_outputs,
+                user: context.user?.id ?? '',
             };
 
-            await reports.insertOne({ ...newReport, report_number: newReport.report_number });
+            await reports.insertOne({ ...newReport, report_number: newReport.report_number, created_at: new Date() });
 
             const incident_ids = [input.incidentId];
             const report_numbers = [newReport.report_number];
diff --git a/site/gatsby-site/server/fields/submissions.ts b/site/gatsby-site/server/fields/submissions.ts
index bc441fadad..e3d0a83e10 100644
--- a/site/gatsby-site/server/fields/submissions.ts
+++ b/site/gatsby-site/server/fields/submissions.ts
@@ -8,7 +8,7 @@ import {
     GraphQLInputObjectType
 } from 'graphql';
 import { generateMutationFields, generateQueryFields } from '../utils';
-import { Context, DBIncident, DBSubmission } from '../interfaces';
+import { Context, DBIncident, DBNotification, DBSubmission } from '../interfaces';
 import { allow } from 'graphql-shield';
 import { ObjectIdScalar } from '../scalars';
 import { isRole } from '../rules';
@@ -62,7 +62,7 @@ export const mutationFields: GraphQLFieldConfigMap<any, Context> = {
 
             // TODO: Strictly type these collections using the DB* types
             const reports = context.client.db('aiidprod').collection("reports");
-            const notificationsCollection = context.client.db('customData').collection("notifications");
+            const notificationsCollection = context.client.db('customData').collection<DBNotification>("notifications");
             const incidentsHistory = context.client.db('history').collection("incidents");
             const reportsHistory = context.client.db('history').collection("reports");
 
@@ -116,11 +116,11 @@ export const mutationFields: GraphQLFieldConfigMap<any, Context> = {
                             from_reports: [report_number]
                         }
                     }
-                    if(submission.epoch_date_modified) {
+                    if (submission.epoch_date_modified) {
                         newIncident.epoch_date_modified = submission.epoch_date_modified;
                     }
 
-                    await incidents.insertOne({ ...newIncident, incident_id: newIncident.incident_id });
+                    await incidents.insertOne({ ...newIncident, incident_id: newIncident.incident_id, created_at: new Date() });
 
 
                     await createNotificationsOnNewIncident(newIncident, context);
@@ -132,7 +132,8 @@ export const mutationFields: GraphQLFieldConfigMap<any, Context> = {
                             type: 'submission-promoted',
                             incident_id: newIncident.incident_id,
                             processed: false,
-                            userId: submission.user
+                            userId: submission.user,
+                            created_at: new Date(),
                         });
                     }
 
@@ -140,6 +141,7 @@ export const mutationFields: GraphQLFieldConfigMap<any, Context> = {
                         ...newIncident,
                         reports: [report_number],
                         incident_id: newIncident.incident_id,
+                        created_at: new Date(),
                     };
 
                     if (submission.user) {
@@ -205,6 +207,7 @@ export const mutationFields: GraphQLFieldConfigMap<any, Context> = {
                             ...incidentValues,
                             reports: [...incidentValues.reports!, report_number],
                             embedding,
+                            created_at: new Date(),
                         }
 
                         if (submission.user) {
@@ -246,11 +249,11 @@ export const mutationFields: GraphQLFieldConfigMap<any, Context> = {
                 newReport.user = submission.user;
             }
 
-            if(submission.epoch_date_modified) {
+            if (submission.epoch_date_modified) {
                 newReport.epoch_date_modified = submission.epoch_date_modified;
             }
 
-            await reports.insertOne({ ...newReport, report_number: newReport.report_number });
+            await reports.insertOne({ ...newReport, report_number: newReport.report_number, created_at: new Date() });
 
             const incident_ids: number[] = parentIncidents.map(incident => incident.incident_id!);
             const report_numbers: number[] = [newReport.report_number];
diff --git a/site/gatsby-site/server/generated/graphql.ts b/site/gatsby-site/server/generated/graphql.ts
index a7d4479751..4be1188f68 100644
--- a/site/gatsby-site/server/generated/graphql.ts
+++ b/site/gatsby-site/server/generated/graphql.ts
@@ -1139,6 +1139,7 @@ export type History_Incident = {
   AllegedDeveloperOfAISystem?: Maybe<Array<Maybe<Scalars['String']['output']>>>;
   AllegedHarmedOrNearlyHarmedParties?: Maybe<Array<Maybe<Scalars['String']['output']>>>;
   _id?: Maybe<Scalars['ObjectId']['output']>;
+  created_at?: Maybe<Scalars['DateTime']['output']>;
   date: Scalars['String']['output'];
   description?: Maybe<Scalars['String']['output']>;
   editor_dissimilar_incidents?: Maybe<Array<Maybe<Scalars['Int']['output']>>>;
@@ -1193,6 +1194,7 @@ export type History_IncidentFilterType = {
   NOR?: InputMaybe<Array<InputMaybe<History_IncidentFilterType>>>;
   OR?: InputMaybe<Array<InputMaybe<History_IncidentFilterType>>>;
   _id?: InputMaybe<ObjectIdFilter>;
+  created_at?: InputMaybe<DateTimeFilter>;
   date?: InputMaybe<StringFilter>;
   description?: InputMaybe<StringFilter>;
   editor_dissimilar_incidents?: InputMaybe<IntFilter>;
@@ -1275,6 +1277,7 @@ export enum History_IncidentSortByInput {
 
 export type History_IncidentSortType = {
   _id?: InputMaybe<SortType>;
+  created_at?: InputMaybe<SortType>;
   date?: InputMaybe<SortType>;
   description?: InputMaybe<SortType>;
   editor_notes?: InputMaybe<SortType>;
@@ -1334,6 +1337,7 @@ export type History_Report = {
   _id?: Maybe<Scalars['ObjectId']['output']>;
   authors?: Maybe<Array<Maybe<Scalars['String']['output']>>>;
   cloudinary_id?: Maybe<Scalars['String']['output']>;
+  created_at?: Maybe<Scalars['DateTime']['output']>;
   date_downloaded: Scalars['DateTime']['output'];
   date_modified: Scalars['DateTime']['output'];
   date_published: Scalars['DateTime']['output'];
@@ -1406,6 +1410,7 @@ export type History_ReportFilterType = {
   _id?: InputMaybe<ObjectIdFilter>;
   authors?: InputMaybe<StringFilter>;
   cloudinary_id?: InputMaybe<StringFilter>;
+  created_at?: InputMaybe<DateTimeFilter>;
   date_downloaded?: InputMaybe<DateTimeFilter>;
   date_modified?: InputMaybe<DateTimeFilter>;
   date_published?: InputMaybe<DateTimeFilter>;
@@ -1485,6 +1490,7 @@ export enum History_ReportSortByInput {
 export type History_ReportSortType = {
   _id?: InputMaybe<SortType>;
   cloudinary_id?: InputMaybe<SortType>;
+  created_at?: InputMaybe<SortType>;
   date_downloaded?: InputMaybe<SortType>;
   date_modified?: InputMaybe<SortType>;
   date_published?: InputMaybe<SortType>;
@@ -2562,6 +2568,7 @@ export type MutationUpsertOneSubscriptionArgs = {
 export type Notification = {
   __typename?: 'Notification';
   _id?: Maybe<Scalars['ObjectId']['output']>;
+  created_at?: Maybe<Scalars['DateTime']['output']>;
   entity_id?: Maybe<Scalars['String']['output']>;
   incident_id?: Maybe<Scalars['Int']['output']>;
   isUpdate?: Maybe<Scalars['Boolean']['output']>;
@@ -2577,6 +2584,7 @@ export type NotificationFilterType = {
   NOR?: InputMaybe<Array<InputMaybe<NotificationFilterType>>>;
   OR?: InputMaybe<Array<InputMaybe<NotificationFilterType>>>;
   _id?: InputMaybe<ObjectIdFilter>;
+  created_at?: InputMaybe<DateTimeFilter>;
   entity_id?: InputMaybe<StringFilter>;
   incident_id?: InputMaybe<IntFilter>;
   isUpdate?: InputMaybe<BooleanFilter>;
@@ -2657,6 +2665,7 @@ export enum NotificationSortByInput {
 
 export type NotificationSortType = {
   _id?: InputMaybe<SortType>;
+  created_at?: InputMaybe<SortType>;
   entity_id?: InputMaybe<SortType>;
   incident_id?: InputMaybe<SortType>;
   isUpdate?: InputMaybe<SortType>;
@@ -3090,6 +3099,7 @@ export type Report = {
   _id?: Maybe<Scalars['ObjectId']['output']>;
   authors: Array<Maybe<Scalars['String']['output']>>;
   cloudinary_id: Scalars['String']['output'];
+  created_at?: Maybe<Scalars['DateTime']['output']>;
   date_downloaded: Scalars['DateTime']['output'];
   date_modified: Scalars['DateTime']['output'];
   date_published: Scalars['DateTime']['output'];
@@ -3189,6 +3199,7 @@ export type ReportFilterType = {
   _id?: InputMaybe<ObjectIdFilter>;
   authors?: InputMaybe<StringFilter>;
   cloudinary_id?: InputMaybe<StringFilter>;
+  created_at?: InputMaybe<DateTimeFilter>;
   date_downloaded?: InputMaybe<DateTimeFilter>;
   date_modified?: InputMaybe<DateTimeFilter>;
   date_published?: InputMaybe<DateTimeFilter>;
@@ -3221,6 +3232,7 @@ export type ReportInsertType = {
   _id?: InputMaybe<Scalars['ObjectId']['input']>;
   authors: Array<InputMaybe<Scalars['String']['input']>>;
   cloudinary_id: Scalars['String']['input'];
+  created_at?: InputMaybe<Scalars['DateTime']['input']>;
   date_downloaded: Scalars['DateTime']['input'];
   date_modified: Scalars['DateTime']['input'];
   date_published: Scalars['DateTime']['input'];
@@ -3253,6 +3265,7 @@ export type ReportSetType = {
   _id?: InputMaybe<Scalars['ObjectId']['input']>;
   authors?: InputMaybe<Array<InputMaybe<Scalars['String']['input']>>>;
   cloudinary_id?: InputMaybe<Scalars['String']['input']>;
+  created_at?: InputMaybe<Scalars['DateTime']['input']>;
   date_downloaded?: InputMaybe<Scalars['DateTime']['input']>;
   date_modified?: InputMaybe<Scalars['DateTime']['input']>;
   date_published?: InputMaybe<Scalars['DateTime']['input']>;
@@ -3329,6 +3342,7 @@ export enum ReportSortByInput {
 export type ReportSortType = {
   _id?: InputMaybe<SortType>;
   cloudinary_id?: InputMaybe<SortType>;
+  created_at?: InputMaybe<SortType>;
   date_downloaded?: InputMaybe<SortType>;
   date_modified?: InputMaybe<SortType>;
   date_published?: InputMaybe<SortType>;
diff --git a/site/gatsby-site/server/types/incidentHistory.ts b/site/gatsby-site/server/types/incidentHistory.ts
index 77ca3c2ff2..85fbefaf7f 100644
--- a/site/gatsby-site/server/types/incidentHistory.ts
+++ b/site/gatsby-site/server/types/incidentHistory.ts
@@ -1,6 +1,7 @@
 import { GraphQLInt, GraphQLList, GraphQLNonNull, GraphQLObjectType, GraphQLString } from "graphql";
 import { ObjectIdScalar } from "../scalars";
 import { IncidentEmbeddingType, NlpSimilarIncidentType, TsneType } from "./types";
+import { GraphQLDateTime } from "graphql-scalars";
 
 export const IncidentHistoryType = new GraphQLObjectType({
     name: 'History_incident',
@@ -9,6 +10,7 @@ export const IncidentHistoryType = new GraphQLObjectType({
         AllegedDeployerOfAISystem: { type: new GraphQLList(GraphQLString), resolve: (source) => source['Alleged deployer of AI system'] },
         AllegedDeveloperOfAISystem: { type: new GraphQLList(GraphQLString), resolve: (source) => source['Alleged developer of AI system'] },
         AllegedHarmedOrNearlyHarmedParties: { type: new GraphQLList(GraphQLString), resolve: (source) => source['Alleged harmed or nearly harmed parties'] },
+        created_at: { type: GraphQLDateTime },
         implicated_systems: { type: new GraphQLList(GraphQLString) },
         date: { type: new GraphQLNonNull(GraphQLString) },
         description: { type: GraphQLString },
diff --git a/site/gatsby-site/server/types/notification.ts b/site/gatsby-site/server/types/notification.ts
index cc6cf7ad28..2a7d489d39 100644
--- a/site/gatsby-site/server/types/notification.ts
+++ b/site/gatsby-site/server/types/notification.ts
@@ -16,5 +16,6 @@ export const NotificationType = new GraphQLObjectType({
         sentDate: { type: GraphQLDateTime },
         type: { type: GraphQLString },
         userId: getRelationshipConfig(UserType, GraphQLString, 'userId', 'userId', 'users', 'customData'),
+        created_at: { type: GraphQLDateTime },
     }),
 });
\ No newline at end of file
diff --git a/site/gatsby-site/server/types/report.ts b/site/gatsby-site/server/types/report.ts
index 05811bfc0b..2235473278 100644
--- a/site/gatsby-site/server/types/report.ts
+++ b/site/gatsby-site/server/types/report.ts
@@ -1,5 +1,5 @@
 import { GraphQLBoolean, GraphQLInt, GraphQLList, GraphQLNonNull, GraphQLObjectType, GraphQLString } from "graphql";
-import { DateTimeResolver } from "graphql-scalars";
+import { DateTimeResolver, GraphQLDateTime } from "graphql-scalars";
 import { ObjectIdScalar } from "../scalars";
 import { getRelationshipConfig } from "../utils";
 import { Context } from "../interfaces";
@@ -20,6 +20,7 @@ export const ReportType = new GraphQLObjectType({
         _id: { type: ObjectIdScalar },
         authors: { type: new GraphQLNonNull(new GraphQLList(GraphQLString)) },
         cloudinary_id: { type: new GraphQLNonNull(GraphQLString) },
+        created_at: { type: GraphQLDateTime },
         date_downloaded: { type: new GraphQLNonNull(DateTimeResolver) },
         date_modified: { type: new GraphQLNonNull(DateTimeResolver) },
         date_published: { type: new GraphQLNonNull(DateTimeResolver) },
diff --git a/site/gatsby-site/server/types/reportHistory.ts b/site/gatsby-site/server/types/reportHistory.ts
index 14f8ccbd1d..e3899ebfde 100644
--- a/site/gatsby-site/server/types/reportHistory.ts
+++ b/site/gatsby-site/server/types/reportHistory.ts
@@ -1,5 +1,5 @@
 import { GraphQLBoolean, GraphQLInt, GraphQLList, GraphQLNonNull, GraphQLObjectType, GraphQLString } from "graphql";
-import { DateTimeResolver } from "graphql-scalars";
+import { DateTimeResolver, GraphQLDateTime } from "graphql-scalars";
 import { ObjectIdScalar } from "../scalars";
 import { EmbeddingType } from "./types";
 
@@ -9,6 +9,7 @@ export const ReportHistoryType = new GraphQLObjectType({
         _id: { type: ObjectIdScalar },
         authors: { type: new GraphQLList(GraphQLString) },
         cloudinary_id: { type: GraphQLString },
+        created_at: { type: GraphQLDateTime },
         date_downloaded: { type: new GraphQLNonNull(DateTimeResolver) },
         date_modified: { type: new GraphQLNonNull(DateTimeResolver) },
         date_published: { type: new GraphQLNonNull(DateTimeResolver) },