diff --git a/src/DittoWallet.ts b/src/DittoWallet.ts
deleted file mode 100644
index 95616325..00000000
--- a/src/DittoWallet.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-import { HDKey } from '@scure/bip32';
-
-import { Conf } from '@/config.ts';
-
-/**
- * HD wallet based on the `DITTO_NSEC`.
- * The wallet is used to derive keys for various purposes.
- * It is a singleton with static methods, and the keys are cached.
- */
-export class DittoWallet {
-  static #root = HDKey.fromMasterSeed(Conf.seckey);
-  static #keys = new Map<string, HDKey>();
-
-  /** Derive the key cached. */
-  static derive(path: string): HDKey {
-    const existing = this.#keys.get(path);
-    if (existing) {
-      return existing;
-    } else {
-      const key = this.#root.derive(path);
-      this.#keys.set(path, key);
-      return key;
-    }
-  }
-
-  /** Derive the key and return the bytes. */
-  static deriveKey(path: string): Uint8Array {
-    const { privateKey } = this.derive(path);
-
-    if (!privateKey) {
-      throw new Error('Private key not available');
-    }
-
-    return privateKey;
-  }
-
-  /** Database encryption key for AES-GCM encryption of database columns. */
-  static get dbKey(): Uint8Array {
-    return this.deriveKey(Conf.wallet.dbKeyPath);
-  }
-
-  /** VAPID secret key, used for web push notifications. ES256. */
-  static get vapidKey(): Uint8Array {
-    return this.deriveKey(Conf.wallet.vapidKeyPath);
-  }
-}