From ddd3a42564ca914135d572e1cdec795e61526867 Mon Sep 17 00:00:00 2001
From: Uncle Stretch <uncle.stretch@ghostchain.io>
Date: Tue, 9 Dec 2025 17:23:08 +0300
Subject: [PATCH] new slashing function for block commitment offence

Signed-off-by: Uncle Stretch <uncle.stretch@ghostchain.io>
---
 Cargo.lock                     |  2 +-
 pallets/slow-clap/Cargo.toml   |  2 +-
 pallets/slow-clap/src/lib.rs   |  7 +++++--
 pallets/slow-clap/src/tests.rs | 11 ++++++++---
 4 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index b71dace..efb6db3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3837,7 +3837,7 @@ dependencies = [
 
 [[package]]
 name = "ghost-slow-clap"
-version = "0.4.8"
+version = "0.4.9"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
diff --git a/pallets/slow-clap/Cargo.toml b/pallets/slow-clap/Cargo.toml
index ba48845..9bb6e9c 100644
--- a/pallets/slow-clap/Cargo.toml
+++ b/pallets/slow-clap/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ghost-slow-clap"
-version = "0.4.9"
+version = "0.4.10"
 description = "Applause protocol for the EVM bridge"
 license.workspace = true
 authors.workspace = true
diff --git a/pallets/slow-clap/src/lib.rs b/pallets/slow-clap/src/lib.rs
index 7a73ca8..8efd314 100644
--- a/pallets/slow-clap/src/lib.rs
+++ b/pallets/slow-clap/src/lib.rs
@@ -1398,8 +1398,11 @@ impl<Offender: Clone> Offence<Offender> for SlowClapOffence<Offender> {
                 missed_percent.saturating_mul(Perbill::from_rational(1, offenders_count))
             }
             OffenceType::CommitmentOffence => offenders_count
-                .checked_sub(self.validator_set_count / 10 + 1)
-                .map(|threshold| Perbill::from_rational(3 * threshold, self.validator_set_count))
+                .checked_sub(Perbill::from_percent(9).mul_ceil(self.validator_set_count))
+                .map(|threshold| {
+                    Perbill::from_rational(threshold.saturating_mul(4), self.validator_set_count)
+                        .square()
+                })
                 .unwrap_or_default(),
         }
     }
diff --git a/pallets/slow-clap/src/tests.rs b/pallets/slow-clap/src/tests.rs
index 97b7ce5..6f3d1db 100644
--- a/pallets/slow-clap/src/tests.rs
+++ b/pallets/slow-clap/src/tests.rs
@@ -40,16 +40,21 @@ fn should_calculate_throttling_slash_function_correctly() {
     assert_eq!(dummy_offence.slash_fraction(5), Perbill::zero());
     assert_eq!(
         dummy_offence.slash_fraction(15),
-        Perbill::from_parts(120_000_000)
+        Perbill::from_parts(57_600_000)
     );
     assert_eq!(
         dummy_offence.slash_fraction(20),
-        Perbill::from_parts(270_000_000)
+        Perbill::from_parts(193_600_000)
+    );
+    assert_eq!(
+        dummy_offence.slash_fraction(25),
+        Perbill::from_parts(409_600_000)
     );
     assert_eq!(
         dummy_offence.slash_fraction(30),
-        Perbill::from_parts(570_000_000)
+        Perbill::from_parts(705_600_000)
     );
+    assert_eq!(dummy_offence.slash_fraction(50), Perbill::one());
 }
 
 #[test]