diff --git a/keyserver/src/creators/siwe-nonce-creator.js b/keyserver/src/creators/siwe-nonce-creator.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/creators/siwe-nonce-creator.js
@@ -0,0 +1,14 @@
+// @flow
+
+import { dbQuery, SQL } from '../database/database.js';
+
+async function createSIWENonceEntry(nonce: string): Promise<void> {
+  const time = Date.now();
+  const query = SQL`
+    INSERT INTO siwe_nonces(nonce, creation_time)
+    VALUES ${[[nonce, time]]}
+  `;
+  await dbQuery(query);
+}
+
+export { createSIWENonceEntry };
diff --git a/keyserver/src/responders/siwe-nonce-responders.js b/keyserver/src/responders/siwe-nonce-responders.js
--- a/keyserver/src/responders/siwe-nonce-responders.js
+++ b/keyserver/src/responders/siwe-nonce-responders.js
@@ -2,10 +2,14 @@
 
 import { generateNonce } from 'siwe';
 
-import type { SIWENonceResponse } from 'lib/types/siwe-types.js';
+import type { SIWENonceResponse } from 'lib/types/siwe-types';
+
+import { createSIWENonceEntry } from '../creators/siwe-nonce-creator';
 
 async function siweNonceResponder(): Promise<SIWENonceResponse> {
-  return { nonce: generateNonce() };
+  const generatedNonce = generateNonce();
+  await createSIWENonceEntry(generatedNonce);
+  return { nonce: generatedNonce };
 }
 
 export { siweNonceResponder };