diff --git a/SHiNE-server/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/Net_GetMessageThread_Handler.java b/SHiNE-server/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/Net_GetMessageThread_Handler.java
index 3c0b8570..6c3e7ffe 100644
--- a/SHiNE-server/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/Net_GetMessageThread_Handler.java
+++ b/SHiNE-server/shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/Net_GetMessageThread_Handler.java
@@ -28,7 +28,7 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
     public Net_Response handle(Net_Request baseRequest, ConnectionContext ctx) {
         Net_GetMessageThread_Request req = (Net_GetMessageThread_Request) baseRequest;
         if (req.getMessage() == null || req.getMessage().getBlockchainName() == null || req.getMessage().getBlockNumber() == null) {
-            return NetExceptionResponseFactory.error(req, WireCodes.Status.BAD_REQUEST, "bad_fields", "Некорректные поля message");
+            return NetExceptionResponseFactory.error(req, WireCodes.Status.BAD_REQUEST, "bad_fields", "Некорректные поля message");
         }
 
         int depthUp = req.getDepthUp() == null ? 20 : Math.max(0, req.getDepthUp());
@@ -40,9 +40,9 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
             if (viewerLogin == null || viewerLogin.isBlank()) {
                 viewerLogin = ChannelsReadSupport.canonicalLogin(c, req.getLogin());
             }
-            PostRow focusRow = findByNumber(c, req.getMessage().getBlockchainName(), req.getMessage().getBlockNumber());
+            PostRow focusRow = findFocusRow(c, req.getMessage());
             if (focusRow == null) {
-                return NetExceptionResponseFactory.error(req, 404, "message_not_found", "Сообщение не найдено");
+                return NetExceptionResponseFactory.error(req, 404, "message_not_found", "Сообщение не найдено");
             }
 
             Net_GetMessageThread_Response resp = new Net_GetMessageThread_Response();
@@ -67,10 +67,31 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
             return resp;
         } catch (Exception e) {
             log.error("GetMessageThread failed", e);
-            return NetExceptionResponseFactory.error(req, WireCodes.Status.INTERNAL_ERROR, "internal_error", "Внутренняя ошибка сервера");
+            return NetExceptionResponseFactory.error(req, WireCodes.Status.INTERNAL_ERROR, "internal_error", "Внутренняя ошибка сервера");
         }
     }
 
+    private PostRow findFocusRow(Connection c, Net_GetMessageThread_Request.MessageSelector selector) throws Exception {
+        String blockchainName = String.valueOf(selector.getBlockchainName() == null ? "" : selector.getBlockchainName()).trim();
+        int blockNumber = selector.getBlockNumber();
+        byte[] blockHash = parseOptionalHash(selector.getBlockHash());
+
+        if (blockHash != null) {
+            PostRow exact = findByNumberAndHash(c, blockchainName, blockNumber, blockHash);
+            if (exact != null) return exact;
+        }
+
+        PostRow byNumber = findByNumber(c, blockchainName, blockNumber);
+        if (byNumber != null) return byNumber;
+
+        if (blockHash != null) {
+            PostRow byHash = findByHash(c, blockHash);
+            if (byHash != null) return byHash;
+        }
+
+        return null;
+    }
+
     private List<Net_GetMessageThread_Response.MessageNodeTree> loadChildren(Connection c, PostRow parent, int depthDown, int childLimit, String viewerLogin) throws Exception {
         if (depthDown <= 0) return List.of();
         List<PostRow> replies = findReplies(c, parent.bchName, parent.blockNumber, parent.blockHash, childLimit);
@@ -123,6 +144,48 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
         }
     }
 
+    private PostRow findByNumberAndHash(Connection c, String bchName, int blockNumber, byte[] blockHash) throws Exception {
+        String sql = """
+            SELECT login,bch_name,block_number,block_hash,block_bytes,to_bch_name,to_block_number,to_block_hash,line_code,msg_sub_type,this_line_number
+            FROM blocks
+            WHERE bch_name=? AND block_number=? AND block_hash=?
+            LIMIT 1
+            """;
+        try (PreparedStatement ps = c.prepareStatement(sql)) {
+            ps.setString(1, bchName);
+            ps.setInt(2, blockNumber);
+            ps.setBytes(3, blockHash);
+            try (ResultSet rs = ps.executeQuery()) {
+                return rs.next() ? mapRow(rs) : null;
+            }
+        }
+    }
+
+    private PostRow findByHash(Connection c, byte[] blockHash) throws Exception {
+        String sql = """
+            SELECT login,bch_name,block_number,block_hash,block_bytes,to_bch_name,to_block_number,to_block_hash,line_code,msg_sub_type,this_line_number
+            FROM blocks
+            WHERE block_hash=?
+            LIMIT 1
+            """;
+        try (PreparedStatement ps = c.prepareStatement(sql)) {
+            ps.setBytes(1, blockHash);
+            try (ResultSet rs = ps.executeQuery()) {
+                return rs.next() ? mapRow(rs) : null;
+            }
+        }
+    }
+
+    private byte[] parseOptionalHash(String hex) {
+        String value = String.valueOf(hex == null ? "" : hex).trim();
+        if (value.isEmpty()) return null;
+        try {
+            return ChannelsReadSupport.hexToBytes(value);
+        } catch (Exception ignored) {
+            return null;
+        }
+    }
+
     private PostRow mapRow(ResultSet rs) throws Exception {
         PostRow row = new PostRow();
         row.login = rs.getString("login");
diff --git a/SHiNE-server/src/test/java/test/it/cases/IT_06_ChannelsApi.java b/SHiNE-server/src/test/java/test/it/cases/IT_06_ChannelsApi.java
index 80055668..f45208c5 100644
--- a/SHiNE-server/src/test/java/test/it/cases/IT_06_ChannelsApi.java
+++ b/SHiNE-server/src/test/java/test/it/cases/IT_06_ChannelsApi.java
@@ -57,11 +57,12 @@ public class IT_06_ChannelsApi {
                 JsonNode first = messages.get(0);
                 int blockNumber = first.path("messageRef").path("blockNumber").asInt(-1);
                 String blockHash = first.path("messageRef").path("blockHash").asText("");
+                String messageBlockchainName = first.path("authorBlockchainName").asText("");
 
-                if (blockNumber > 0 && !blockHash.isBlank()) {
+                if (!messageBlockchainName.isBlank() && blockNumber >= 0 && !blockHash.isBlank()) {
                     String threadResp = ws.call(
                             "GetMessageThread",
-                            JsonBuilders.getMessageThread(bchName, blockNumber, blockHash, 20, 2, 50),
+                            JsonBuilders.getMessageThread(messageBlockchainName, blockNumber, blockHash, 20, 2, 50),
                             t
                     );
                     check200(r, threadResp, "GetMessageThread");
@@ -73,7 +74,7 @@ public class IT_06_ChannelsApi {
                     }
                     r.ok("GetMessageThread: payload shape OK");
                 } else {
-                    r.ok("GetMessageThread: пропущено, у первого сообщения нет корректного ref");
+                    r.ok("GetMessageThread: пропущено, у первого сообщения нет полного messageRef/authorBlockchainName");
                 }
             } else {
                 r.ok("GetMessageThread: пропущено, в канале нет сообщений");
diff --git a/VERSION.properties b/VERSION.properties
index 6df3a14e..7068baa2 100644
--- a/VERSION.properties
+++ b/VERSION.properties
@@ -1,2 +1,2 @@
 client.version=1.2.354
-server.version=1.2.327
+server.version=1.2.328