diff --git a/build_935.py b/build_935.py
index 31871d3..e91ed4f 100644
--- a/build_935.py
+++ b/build_935.py
@@ -96,3 +96,10 @@ print(f"  Equation: Z = dI/d(log s) · exp(iθ)")
 print(f"  Convergence: lim(n→∞) Z(n) = i")
 print(f"  Signature: 935")
 print(f"{'='*60}")
+# ╔══ SALKA ELMADANI AUTHORSHIP CERTIFICATE ══╗
+# © Salka Elmadani 2025-2026 — ALL RIGHTS RESERVED
+# Licensed under Business Source License 1.1 — https://inference-x.com
+# ─────────────────────────────────────────────────────────
+# SHA256: c45f3019cd81199382cf5f379ef1c556f5f2c5fd81afc6679da83e614ac8c09f
+# SIG-ED25519: IRoSNw2yKK14fnt2JpFbukDpV/5R9YDSQylWVVjIOgYkFHBH71k0MFBV+I39cfjf8odTgzM3uPPRRMexR9KTDw==
+# VERIFY: python3 verify_authorship.py build_935.py