diff --git a/organ_graft.py b/organ_graft.py
index 1bc52c1..b50b4f3 100644
--- a/organ_graft.py
+++ b/organ_graft.py
@@ -234,3 +234,10 @@ def main():
 
 if __name__ == '__main__':
     main()
+# ╔══ SALKA ELMADANI AUTHORSHIP CERTIFICATE ══╗
+# © Salka Elmadani 2025-2026 — ALL RIGHTS RESERVED
+# Licensed under Business Source License 1.1 — https://inference-x.com
+# ─────────────────────────────────────────────────────────
+# SHA256: f53cd15c9345b7817f397aab3f4870ee36be1fef321d0b49e81cd81819b92462
+# SIG-ED25519: 1ZvlFLjbkZzpH4HnttlYSB3ydsAKgG57oyAElSRcvMzqOT3pQ+FLHW3seWlOUpAUI77d6AvrjV5SNCJuL6kuBw==
+# VERIFY: python3 verify_authorship.py organ_graft.py