From 61445d8d8427862b9e8359fd826709d3a68321a3 Mon Sep 17 00:00:00 2001
From: Rima <153289003+casks-mutters@users.noreply.github.com>
Date: Mon, 17 Nov 2025 04:20:10 -0500
Subject: [PATCH] =?UTF-8?q?Use=20stderr=20for=20=E2=80=9Cstart=20block=20c?=
 =?UTF-8?q?annot=20be=20negative=E2=80=9D=20error?=
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Small consistency fix
---
 slot_change_stream.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/slot_change_stream.py b/slot_change_stream.py
index e7332d2..72ad8a8 100644
--- a/slot_change_stream.py
+++ b/slot_change_stream.py
@@ -102,7 +102,9 @@ def stream(args):
 
     # Start from either user-specified block or tip
     current = args.start if args.start is not None else w3.eth.block_number
-    if current < 0: print("❌ start block cannot be negative."); sys.exit(2)
+        if current < 0:
+        print("❌ start block cannot be negative.", file=sys.stderr)
+        sys.exit(2)
 
     while not stop_flag["stop"]:
         if not w3.is_connected(): print("🔌 Reconnecting RPC…"); w3 = connect(args.rpc)