From 08d90b6e8e634d529c66b205f30cb5bbfc1b64fb94b712cb1f0621aea93b84cd Mon Sep 17 00:00:00 2001
From: AidarKC <i@aidarkc.ru>
Date: Mon, 29 Dec 2025 15:10:14 +0300
Subject: [PATCH] =?UTF-8?q?29=2012=2025=20=D0=B8=D1=81=D0=BF=D1=80=D0=B0?=
 =?UTF-8?q?=D0=B2=D0=B8=D0=BB=20=D0=BC=D0=B8=D0=BA=D1=80=D0=BE=20=D0=B1?=
 =?UTF-8?q?=D0=B0=D0=B3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../JSON/handlers/blockchain/BlockchainWriter.java    | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/blockchain/BlockchainWriter.java b/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/blockchain/BlockchainWriter.java
index dfb9b11..6c3e872 100644
--- a/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/blockchain/BlockchainWriter.java
+++ b/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/blockchain/BlockchainWriter.java
@@ -40,6 +40,9 @@ public final class BlockchainWriter {
 
     private static final Logger log = LoggerFactory.getLogger(BlockchainWriter.class);
 
+    private static final String ZERO_HASH_64 =
+            "0000000000000000000000000000000000000000000000000000000000000000";
+
     private final SqliteDbController db;
     private final BlocksDAO blocksDAO;
     private final BlockchainStateDAO stateDAO;
@@ -294,7 +297,13 @@ public final class BlockchainWriter {
 
         e.setBlockLineIndex(block.lineIndex);
         e.setBlockLineNumber(block.lineNumber);
-        e.setBlockLinePreHashe(prevLineHashHex);
+
+        // ✅ минимальная правка: для genesis сохраняем именно "64 нуля", а не пустую строку/NULL
+        String linePre = prevLineHashHex;
+        if (block.recordNumber == 0 && (linePre == null || linePre.isBlank())) {
+            linePre = ZERO_HASH_64;
+        }
+        e.setBlockLinePreHashe(linePre);
 
         e.setMsgType(block.body.type());