From 0628be007b2e52fe3ff15285f4a3a28efb17cab5 Mon Sep 17 00:00:00 2001
From: brewmaster012 <88689859+brewmaster012@users.noreply.github.com>
Date: Thu, 4 Jan 2024 14:33:13 -0600
Subject: [PATCH 1/2] relax header length basic check

BSC network may have larger header

"error":"/zetachain.zetacore.observer.MsgAddBlockHeader
invalid msg | invalid block header (header too long (2223)): invalid
request
---
 common/headers.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/headers.go b/common/headers.go
index f230367001..528bcffb78 100644
--- a/common/headers.go
+++ b/common/headers.go
@@ -101,7 +101,7 @@ func (h HeaderData) Validate(blockHash []byte, chainID int64, height int64) erro
 // validateEthereumHeader performs a basic validation of the Ethereum header
 func validateEthereumHeader(headerBytes []byte, blockHash []byte, height int64) error {
 	// on ethereum the block header is ~538 bytes in RLP encoding
-	if len(headerBytes) > 1024 {
+	if len(headerBytes) > 4096 {
 		return fmt.Errorf("header too long (%d)", len(headerBytes))
 	}
 

From 3ba344d3ac8cb0a67280706005b551951b0ca7b2 Mon Sep 17 00:00:00 2001
From: brewmaster012 <88689859+brewmaster012@users.noreply.github.com>
Date: Thu, 4 Jan 2024 14:35:56 -0600
Subject: [PATCH 2/2] update changelog

---
 changelog.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/changelog.md b/changelog.md
index aaffa9a6c5..9a2d64ea59 100644
--- a/changelog.md
+++ b/changelog.md
@@ -26,6 +26,7 @@
 * add check to verify new tss has been produced when triggering tss funds migration
 * fix Athens-3 log print issue - avoid posting uncessary outtx confirmation
 * fix docker build issues with version: golang:1.20-alpine3.18
+* [1525](https://github.com/zeta-chain/node/pull/1525) - relax EVM chain block header length check 1024->4096
 
 ### Refactoring