diff --git a/platforms/_registry.yml b/platforms/_registry.yml
index ed8ea04f..52924999 100644
--- a/platforms/_registry.yml
+++ b/platforms/_registry.yml
@@ -535,48 +535,11 @@ platforms:
     # Windows: names differing only by case land on one file.
     case_insensitive_fs: true
     schedule: monthly
-    cores:
-    - applewin
-    - azahar
-    - beetle_ngp
-    - beetle_pce
-    - beetle_pcfx
-    - beetle_psx
-    - beetle_saturn
-    - beetle_vb
-    - beetle_wswan
-    - bsnes
-    - citra
-    - citra2018
-    - citra_canary
-    - clk
-    - fbneo
-    - freechaf
-    - freeintv
-    - gambatte
-    - genesis_plus_gx
-    - handy
-    - mame
-    - melonds
-    - mgba
-    - mupen64plus_next
-    - numero
-    - o2em
-    - opera
-    - panda3ds
-    - picodrive
-    - ppsspp
-    - prboom
-    - prosystem
-    - puae
-    - quicknes
-    - sameboy
-    - snes9x
-    - stella
-    - trident
-    - vecx
-    - vice_x64
-    - virtualjaguar
+    # EmuHawk finds firmware by SHA1 against FirmwareDatabase.FirmwareRecords
+    # and its cores are its own builds (CoreNames.cs): no libretro profile
+    # describes what it reads, so the database alone decides, as MiSTer's
+    # BiosDB does.
+    cores: []
     target_scraper: null
     target_source: null
     install:
diff --git a/platforms/bizhawk.yml b/platforms/bizhawk.yml
index 47645b98..e2cefb4d 100644
--- a/platforms/bizhawk.yml
+++ b/platforms/bizhawk.yml
@@ -5,33 +5,7 @@ source: "https://raw.githubusercontent.com/TASEmulators/BizHawk/2.11.1/src/BizHa
 base_destination: Firmware
 hash_type: sha1
 verification_mode: sha1
-cores:
-- gambatte
-- mgba
-- sameboy
-- melonds
-- snes9x
-- bsnes
-- beetle_psx
-- beetle_saturn
-- beetle_pce
-- beetle_pcfx
-- beetle_wswan
-- beetle_vb
-- beetle_ngp
-- opera
-- stella
-- picodrive
-- ppsspp
-- handy
-- quicknes
-- genesis_plus_gx
-- mupen64plus_next
-- puae
-- prboom
-- virtualjaguar
-- vice_x64
-- mame
+cores: []
 systems:
   sega-32x:
     files:
diff --git a/scripts/scraper/bizhawk_scraper.py b/scripts/scraper/bizhawk_scraper.py
index f9c6df70..89134c5b 100644
--- a/scripts/scraper/bizhawk_scraper.py
+++ b/scripts/scraper/bizhawk_scraper.py
@@ -105,38 +105,13 @@ SYSTEM_ID_MAP: dict[str, str] = {
     "ZXSpectrum": "sinclair-zx-spectrum",
 }
 
-# Cores that overlap with BizHawk's system coverage
-BIZHAWK_CORES = [
-    "gambatte",
-    "mgba",
-    "sameboy",
-    "melonds",
-    "snes9x",
-    "bsnes",
-    "beetle_psx",
-    "beetle_saturn",
-    "beetle_pce",
-    "beetle_pcfx",
-    "beetle_wswan",
-    "beetle_vb",
-    "beetle_ngp",
-    "opera",
-    "stella",
-    "picodrive",
-    "ppsspp",
-    "handy",
-    "quicknes",
-    "genesis_plus_gx",
-    # Ares64 is BizHawk's N64 core only. Its firmware (the 64DD IPL) is in
-    # FirmwareDatabase.cs. The ares profile's thirty systems are not what
-    # BizHawk runs ares for.
-    "mupen64plus_next",
-    "puae",
-    "prboom",
-    "virtualjaguar",
-    "vice_x64",
-    "mame",
-]
+# EmuHawk looks every firmware up by SHA1 against FirmwareDatabase.FirmwareRecords
+# (FirmwareManager.cs), and its cores are its own builds (CoreNames.cs). A
+# libretro profile of the same upstream emulator describes what that libretro
+# build opens, not what EmuHawk reads: listing them by overlapping systems
+# shipped Clock Signal, O2EM, FBNeo and VICE files into Firmware/. The
+# database alone decides what the pack carries.
+BIZHAWK_CORES: list[str] = []
 
 
 def _safe_arithmetic(expr: str) -> int:
diff --git a/tests/test_scraper_contract.py b/tests/test_scraper_contract.py
index bdbbac99..8dfd13b5 100644
--- a/tests/test_scraper_contract.py
+++ b/tests/test_scraper_contract.py
@@ -451,6 +451,18 @@ class BizHawkRunsAresForN64Only(unittest.TestCase):
         self.assertNotIn("ares", platform["cores"])
         self.assertNotIn("ares", registry["platforms"]["bizhawk"]["cores"])
 
+    def test_no_profile_speaks_for_emuhawk(self):
+        """EmuHawk finds firmware by SHA1 in its own database. Cores listed
+        for overlapping systems shipped 400 files it never reads (Clock
+        Signal, O2EM, FBNeo, VICE)."""
+        import yaml
+
+        root = Path(__file__).resolve().parents[1]
+        platform = yaml.safe_load((root / "platforms" / "bizhawk.yml").read_text())
+        registry = yaml.safe_load((root / "platforms" / "_registry.yml").read_text())
+        self.assertEqual(platform["cores"], [])
+        self.assertEqual(registry["platforms"]["bizhawk"]["cores"], [])
+
 
 class EveryTargetCoreReachesAProfile(unittest.TestCase):
     """A target lists cores by their buildbot or package name. A name no