diff --git a/miners/fingerprint_checks.py b/miners/fingerprint_checks.py
new file mode 100644
index 000000000..8675d91ae
--- /dev/null
+++ b/miners/fingerprint_checks.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+"""
+Platform-aware fingerprint checks wrapper.
+
+Automatically detects the current platform and delegates to the
+platform-specific fingerprint_checks module (miners/<platform>/).
+
+Usage:
+    python3 miners/fingerprint_checks.py
+"""
+
+import importlib.util
+import os
+import platform
+import sys
+
+_script_dir = os.path.dirname(os.path.abspath(__file__))
+_platform = platform.system().lower()
+
+_subdir = {"linux": "linux", "windows": "windows", "darwin": "macos"}.get(_platform, "linux")
+_fp_path = os.path.join(_script_dir, _subdir, "fingerprint_checks.py")
+
+if not os.path.exists(_fp_path):
+    print(f"Error: no fingerprint_checks.py found for platform '{_platform}'", file=sys.stderr)
+    print(f"Expected at: {_fp_path}", file=sys.stderr)
+    sys.exit(1)
+
+_spec = importlib.util.spec_from_file_location(f"fingerprint_checks_{_subdir}", _fp_path)
+_mod = importlib.util.module_from_spec(_spec)
+_spec.loader.exec_module(_mod)
+
+# Re-export all public symbols for backward compatibility
+for _attr in dir(_mod):
+    if not _attr.startswith("_"):
+        globals()[_attr] = getattr(_mod, _attr)
+
+if __name__ == "__main__":
+    # If the module has a main-like entry point, run it
+    if hasattr(_mod, "main"):
+        _mod.main()
+    else:
+        print(f"fingerprint_checks ({_platform}) loaded successfully.")
+        print(f"Available functions: {[a for a in dir(_mod) if not a.startswith('_')]}")
\ No newline at end of file
diff --git a/node/rustchain_v2_integrated_v2.2.1_rip200.py b/node/rustchain_v2_integrated_v2.2.1_rip200.py
index 78dac50d2..2e2a9fdee 100644
--- a/node/rustchain_v2_integrated_v2.2.1_rip200.py
+++ b/node/rustchain_v2_integrated_v2.2.1_rip200.py
@@ -9005,7 +9005,12 @@ def _tip_age_slots():
     try:
         with sqlite3.connect(DB_PATH, timeout=3) as db:
             row = db.execute("SELECT slot FROM headers ORDER BY slot DESC LIMIT 1").fetchone()
-        return 0 if row else None
+        if row is None:
+            return None
+        latest_slot = row[0]
+        now_slot = current_slot()
+        age = now_slot - latest_slot
+        return max(0, age)
     except Exception:
         return None
 
diff --git a/tools/rustchain-health.py b/tools/rustchain-health.py
index e93afa53c..e17c81a81 100644
--- a/tools/rustchain-health.py
+++ b/tools/rustchain-health.py
@@ -275,7 +275,8 @@ def render(snapshot: Dict[str, Any]) -> str:
     # ── Overall ───
     all_ok = (h.get("ok", False) and h["reachable"]
               and e["reachable"]
-              and m["reachable"])
+              and m["reachable"]
+              and t["reachable"])
     lines.append(dim("  " + "─" * w))
     if all_ok:
         lines.append(f"  {green(bold('STATUS: ALL SYSTEMS OPERATIONAL'))}")
@@ -358,7 +359,8 @@ def run_once() -> int:
         all_ok = (snapshot["health"].get("ok", False)
                   and snapshot["health"]["reachable"]
                   and snapshot["epoch"]["reachable"]
-                  and snapshot["miners"]["reachable"])
+                  and snapshot["miners"]["reachable"]
+                  and snapshot["tip"]["reachable"])
         return 0 if all_ok else 1
 
     if args.watch > 0: