From 58c2e23fca05d201dfcea092ab032c943c9d5665 Mon Sep 17 00:00:00 2001
From: Ava Chow <github@achow101.com>
Date: Wed, 25 Feb 2026 15:41:12 -0800
Subject: [PATCH] kernel: Update headerssync params

---
 contrib/devtools/headerssync-params.py |  4 ++--
 src/kernel/chainparams.cpp             | 24 ++++++++++++------------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/contrib/devtools/headerssync-params.py b/contrib/devtools/headerssync-params.py
index 82bdaadb233..886ea583d71 100755
--- a/contrib/devtools/headerssync-params.py
+++ b/contrib/devtools/headerssync-params.py
@@ -12,13 +12,13 @@ import random
 # Parameters:
 
 # Aim for still working fine at some point in the future. [datetime]
-TIME = datetime(2028, 4, 2)
+TIME = datetime(2028, 10, 10)
 
 # Expected block interval. [timedelta]
 BLOCK_INTERVAL = timedelta(seconds=600)
 
 # The number of headers corresponding to the minchainwork parameter. [headers]
-MINCHAINWORK_HEADERS = 912683
+MINCHAINWORK_HEADERS = 938343
 
 # Combined processing bandwidth from all attackers to one victim. [bit/s]
 # 6 Gbit/s is approximately the speed at which a single thread of a Ryzen 5950X CPU thread can hash
diff --git a/src/kernel/chainparams.cpp b/src/kernel/chainparams.cpp
index c94cb8c4e2f..3571b500fe0 100644
--- a/src/kernel/chainparams.cpp
+++ b/src/kernel/chainparams.cpp
@@ -191,10 +191,10 @@ public:
             .dTxRate  = 5.40111006496122,
         };
 
-        // Generated by headerssync-params.py on 2025-09-01.
+        // Generated by headerssync-params.py on 2026-02-25.
         m_headers_sync_params = HeadersSyncParams{
-            .commitment_period = 632,
-            .redownload_buffer_size = 15009, // 15009/632 = ~23.7 commitments
+            .commitment_period = 641,
+            .redownload_buffer_size = 15218, // 15218/641 = ~23.7 commitments
         };
     }
 };
@@ -294,10 +294,10 @@ public:
             .dTxRate  = 0.02691479016257117,
         };
 
-        // Generated by headerssync-params.py on 2025-09-03.
+        // Generated by headerssync-params.py on 2026-02-25.
         m_headers_sync_params = HeadersSyncParams{
-            .commitment_period = 628,
-            .redownload_buffer_size = 13460, // 13460/628 = ~21.4 commitments
+            .commitment_period = 673,
+            .redownload_buffer_size = 14460, // 14460/673 = ~21.5 commitments
         };
     }
 };
@@ -401,10 +401,10 @@ public:
             .dTxRate  = 0.01848579579528412,
         };
 
-        // Generated by headerssync-params.py on 2025-09-03.
+        // Generated by headerssync-params.py on 2026-02-25.
         m_headers_sync_params = HeadersSyncParams{
-            .commitment_period = 275,
-            .redownload_buffer_size = 7017, // 7017/275 = ~25.5 commitments
+            .commitment_period = 606,
+            .redownload_buffer_size = 16092, // 16092/606 = ~26.6 commitments
         };
     }
 };
@@ -520,10 +520,10 @@ public:
         fDefaultConsistencyChecks = false;
         m_is_mockable_chain = false;
 
-        // Generated by headerssync-params.py on 2025-09-03.
+        // Generated by headerssync-params.py on 2026-02-25.
         m_headers_sync_params = HeadersSyncParams{
-            .commitment_period = 390,
-            .redownload_buffer_size = 9584, // 9584/390 = ~24.6 commitments
+            .commitment_period = 620,
+            .redownload_buffer_size = 15724, // 15724/620 = ~25.4 commitments
         };
     }
 };