diff --git a/keyserver/src/responders/landing-handler.js b/keyserver/src/responders/landing-handler.js
--- a/keyserver/src/responders/landing-handler.js
+++ b/keyserver/src/responders/landing-handler.js
@@ -194,6 +194,7 @@
       url={clientPath}
       basename={routerBasename}
       siweNonce={siweNonce}
+      siwePrimaryIdentityPublicKey={siwePrimaryIdentityPublicKey}
     />,
   );
   reactStream.pipe(res, { end: false });
diff --git a/landing/landing-ssr.react.js b/landing/landing-ssr.react.js
--- a/landing/landing-ssr.react.js
+++ b/landing/landing-ssr.react.js
@@ -10,15 +10,17 @@
   +url: string,
   +basename: string,
   +siweNonce: ?string,
+  +siwePrimaryIdentityPublicKey: ?string,
 };
 function LandingSSR(props: LandingSSRProps): React.Node {
-  const { url, basename, siweNonce } = props;
+  const { url, basename, siweNonce, siwePrimaryIdentityPublicKey } = props;
 
   const siweContextValue = React.useMemo(
     () => ({
       siweNonce,
+      siwePrimaryIdentityPublicKey,
     }),
-    [siweNonce],
+    [siweNonce, siwePrimaryIdentityPublicKey],
   );
   const routerContext = React.useMemo(() => ({}), []);
   return (
diff --git a/landing/root.js b/landing/root.js
--- a/landing/root.js
+++ b/landing/root.js
@@ -8,11 +8,13 @@
 
 declare var routerBasename: string;
 declare var siweNonce: ?string;
+declare var siwePrimaryIdentityPublicKey: ?string;
 
 function RootComponent(): React.Node {
   const siweContextValue = React.useMemo(
     () => ({
       siweNonce,
+      siwePrimaryIdentityPublicKey,
     }),
     [],
   );
diff --git a/landing/siwe-context.js b/landing/siwe-context.js
--- a/landing/siwe-context.js
+++ b/landing/siwe-context.js
@@ -4,10 +4,12 @@
 
 export type SIWEContextType = {
   +siweNonce: ?string,
+  +siwePrimaryIdentityPublicKey: ?string,
 };
 
 const SIWEContext: React.Context<SIWEContextType> = React.createContext({
   siweNonce: null,
+  siwePrimaryIdentityPublicKey: null,
 });
 
 export { SIWEContext };