diff --git a/frontend/src/models/Slot.model.ts b/frontend/src/models/Slot.model.ts
index ec560a1e..cb6883c4 100644
--- a/frontend/src/models/Slot.model.ts
+++ b/frontend/src/models/Slot.model.ts
@@ -1,5 +1,6 @@
 import { sha256 } from 'js-sha256';
 import { sha256 as sha256Hash } from '@noble/hashes/sha256';
+import { sha512 } from '@noble/hashes/sha512';
 import { Robot, Order, type Federation } from '.';
 import { roboidentitiesClient } from '../services/Roboidentities/Web';
 import { hexToBase91, validateTokenEntropy } from '../utils';
@@ -27,8 +28,8 @@ class Slot {
     const { hasEnoughEntropy, bitsEntropy, shannonEntropy } = validateTokenEntropy(token);
     const tokenSHA256 = hexToBase91(sha256(token));
 
-    const nostrHash = sha256Hash(this.token);
-    this.nostrSecKey = new Uint8Array(nostrHash);
+    const nostrHash = sha256Hash(sha512(this.token));
+    this.nostrSecKey = nostrHash;
     const nostrPubKey = getPublicKey(this.nostrSecKey);
     this.nostrPubKey = nostrPubKey;