diff --git a/lib/actions/holder-actions.js b/lib/actions/holder-actions.js
new file mode 100644
--- /dev/null
+++ b/lib/actions/holder-actions.js
@@ -0,0 +1,7 @@
+// @flow
+
+export const storeEstablishedHolderActionType = 'STORE_ESTABLISHED_HOLDER';
+export type StoreEstablishedHolderPayload = {
+  +blobHash: string,
+  +holder: string,
+};
diff --git a/lib/actions/upload-actions.js b/lib/actions/upload-actions.js
--- a/lib/actions/upload-actions.js
+++ b/lib/actions/upload-actions.js
@@ -4,6 +4,7 @@
 import * as React from 'react';
 import uuid from 'uuid';
 
+import { storeEstablishedHolderActionType } from './holder-actions.js';
 import blobService from '../facts/blob-service.js';
 import type { CallSingleKeyserverEndpoint } from '../keyserver-conn/call-single-keyserver-endpoint.js';
 import { extractKeyserverIDFromIDOptional } from '../keyserver-conn/keyserver-call-utils.js';
@@ -14,6 +15,7 @@
 import { IdentityClientContext } from '../shared/identity-client-context.js';
 import type { AuthMetadata } from '../shared/identity-client-context.js';
 import type { UploadMultimediaResult, Dimensions } from '../types/media-types';
+import type { Dispatch } from '../types/redux-types.js';
 import { toBase64URL } from '../utils/base64.js';
 import {
   blobServiceUploadHandler,
@@ -25,6 +27,7 @@
   generateBlobHolder,
 } from '../utils/blob-service.js';
 import { getMessageForException } from '../utils/errors.js';
+import { useDispatch } from '../utils/redux-utils.js';
 import {
   handleHTTPResponseError,
   createDefaultHTTPRequestHeaders,
@@ -151,7 +154,7 @@
 
 export type BlobServiceUploadResult = {
   ...UploadMultimediaResult,
-  blobHolder: ?string,
+  blobHolder: string,
 };
 
 export type BlobServiceUploadAction = (input: {
@@ -164,6 +167,7 @@
 const blobServiceUpload =
   (
     callKeyserverEndpoint: CallKeyserverEndpoint,
+    dispatch: Dispatch,
     authMetadata: AuthMetadata,
   ): BlobServiceUploadAction =>
   async input => {
@@ -242,6 +246,13 @@
       blobInput.type === 'file' ? blobInput.file.type : blobInput.mimeType;
 
     if (!maybeKeyserverID) {
+      dispatch({
+        type: storeEstablishedHolderActionType,
+        payload: {
+          blobHash,
+          holder: blobHolder,
+        },
+      });
       if (!dimensions) {
         throw new Error('dimensions are required for non-keyserver uploads');
       }
@@ -296,6 +307,8 @@
   invariant(identityContext, 'Identity context should be set');
   const { getAuthMetadata } = identityContext;
 
+  const dispatch = useDispatch();
+
   const blobUploadAction = React.useCallback(
     (
       callSingleKeyserverEndpoint: CallSingleKeyserverEndpoint,
@@ -304,11 +317,12 @@
         const authMetadata = await getAuthMetadata();
         const authenticatedUploadAction = blobServiceUpload(
           callSingleKeyserverEndpoint,
+          dispatch,
           authMetadata,
         );
         return authenticatedUploadAction(input);
       },
-    [getAuthMetadata],
+    [dispatch, getAuthMetadata],
   );
   return useKeyserverCall(blobUploadAction);
 }
diff --git a/lib/reducers/holder-reducer.js b/lib/reducers/holder-reducer.js
new file mode 100644
--- /dev/null
+++ b/lib/reducers/holder-reducer.js
@@ -0,0 +1,24 @@
+// @flow
+
+import { storeEstablishedHolderActionType } from '../actions/holder-actions.js';
+import { type HolderStore } from '../types/holder-types.js';
+import type { BaseAction } from '../types/redux-types.js';
+
+function reduceHolderStore(
+  store: HolderStore,
+  action: BaseAction,
+): HolderStore {
+  if (action.type === storeEstablishedHolderActionType) {
+    const { blobHash, holder } = action.payload;
+    return {
+      ...store,
+      storedHolders: {
+        ...store.storedHolders,
+        [blobHash]: { holder, status: 'ESTABLISHED' },
+      },
+    };
+  }
+  return store;
+}
+
+export { reduceHolderStore };
diff --git a/lib/reducers/holder-reducer.test.js b/lib/reducers/holder-reducer.test.js
new file mode 100644
--- /dev/null
+++ b/lib/reducers/holder-reducer.test.js
@@ -0,0 +1,23 @@
+// @flow
+
+import { reduceHolderStore } from './holder-reducer.js';
+import { storeEstablishedHolderActionType } from '../actions/holder-actions.js';
+import { type HolderStore } from '../types/holder-types.js';
+import type { BaseAction } from '../types/redux-types.js';
+
+describe('reduceHolderStore', () => {
+  it('STORE_ESTABLISHED_HOLDER', () => {
+    const store: HolderStore = {
+      storedHolders: {},
+    };
+
+    const action: BaseAction = {
+      type: storeEstablishedHolderActionType,
+      payload: { blobHash: 'foo', holder: 'bar' },
+    };
+
+    expect(reduceHolderStore(store, action).storedHolders).toStrictEqual({
+      foo: { holder: 'bar', status: 'ESTABLISHED' },
+    });
+  });
+});
diff --git a/lib/reducers/master-reducer.js b/lib/reducers/master-reducer.js
--- a/lib/reducers/master-reducer.js
+++ b/lib/reducers/master-reducer.js
@@ -11,6 +11,7 @@
 import { reduceDraftStore } from './draft-reducer.js';
 import reduceEnabledApps from './enabled-apps-reducer.js';
 import { reduceEntryInfos } from './entry-reducer.js';
+import { reduceHolderStore } from './holder-reducer.js';
 import { reduceIntegrityStore } from './integrity-reducer.js';
 import reduceInviteLinks from './invite-links-reducer.js';
 import reduceKeyserverStore from './keyserver-reducer.js';
@@ -252,6 +253,7 @@
         state.queuedDMOperations,
         action,
       ),
+      holderStore: reduceHolderStore(state.holderStore, action),
     },
     storeOperations,
   };
diff --git a/lib/types/redux-types.js b/lib/types/redux-types.js
--- a/lib/types/redux-types.js
+++ b/lib/types/redux-types.js
@@ -164,6 +164,7 @@
   SetDeviceTokenActionPayload,
   SetDeviceTokenStartedPayload,
 } from '../actions/device-actions.js';
+import type { StoreEstablishedHolderPayload } from '../actions/holder-actions.js';
 import type {
   UpdateConnectionStatusPayload,
   SetLateResponsePayload,
@@ -1608,6 +1609,10 @@
     | {
         +type: 'CLEAR_QUEUED_MEMBERSHIP_DM_OPS',
         +payload: ClearQueuedMembershipDMOpsPayload,
+      }
+    | {
+        +type: 'STORE_ESTABLISHED_HOLDER',
+        +payload: StoreEstablishedHolderPayload,
       },
 }>;