diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3f8cd61..0ce93b1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -112,7 +112,7 @@ New files that you contribute should use the standard copyright header:
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/CONTRIBUTING.zh_CN.md b/CONTRIBUTING.zh_CN.md
index 70aab88..1e77d96 100644
--- a/CONTRIBUTING.zh_CN.md
+++ b/CONTRIBUTING.zh_CN.md
@@ -102,7 +102,7 @@ tRPC-Cpp 代码仓库中的文件不列出作者姓名，以避免混乱并避
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/LICENSE b/LICENSE
index 5b22d45..cc6c148 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (C) 2023 THL A29 Limited, a Tencent company.  All rights reserved. 
+Copyright (C) 2023 Tencent.  All rights reserved. 
 
 cpp-tracing-jaeger is licensed under the Apache License Version 2.0 except for the third-party components listed below.
 
diff --git a/README.md b/README.md
index 2c99896..36f9c97 100644
--- a/README.md
+++ b/README.md
@@ -197,3 +197,9 @@ if (span) {
 ## Notice
 
 * In the proxy mode, it is necessary to invoke the framework's `MakeClientContext` interface to construct the `ClientContext` based on the `ServerContext`. Otherwise, the call relationship between the server and client will be lost, and a complete call chain cannot be formed.
+
+# LICENSE
+
+[LICENSE](LICENSE)
+
+The copyright notice pertaining to the Tencent code in this repo was previously in the name of “THL A29 Limited.”  That entity has now been de-registered.  You should treat all previously distributed copies of the code as if the copyright notice was in the name of “Tencent.”
diff --git a/examples/client/client.cc b/examples/client/client.cc
index e91d34c..a887599 100644
--- a/examples/client/client.cc
+++ b/examples/client/client.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/examples/proxy/forward_server.cc b/examples/proxy/forward_server.cc
index 27d4591..4b226a8 100644
--- a/examples/proxy/forward_server.cc
+++ b/examples/proxy/forward_server.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/examples/proxy/forward_service.cc b/examples/proxy/forward_service.cc
index c3f53b6..cd3c887 100644
--- a/examples/proxy/forward_service.cc
+++ b/examples/proxy/forward_service.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/examples/proxy/forward_service.h b/examples/proxy/forward_service.h
index 5a3d467..3c9cc4f 100644
--- a/examples/proxy/forward_service.h
+++ b/examples/proxy/forward_service.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/examples/server/greeter_service.cc b/examples/server/greeter_service.cc
index 09ea8d0..9036077 100644
--- a/examples/server/greeter_service.cc
+++ b/examples/server/greeter_service.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/examples/server/greeter_service.h b/examples/server/greeter_service.h
index be599b3..916af89 100644
--- a/examples/server/greeter_service.h
+++ b/examples/server/greeter_service.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/examples/server/helloworld_server.cc b/examples/server/helloworld_server.cc
index 841adba..aa59251 100644
--- a/examples/server/helloworld_server.cc
+++ b/examples/server/helloworld_server.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_client_filter.cc b/trpc/tracing/jaeger/jaeger_client_filter.cc
index c92084a..78d49bb 100644
--- a/trpc/tracing/jaeger/jaeger_client_filter.cc
+++ b/trpc/tracing/jaeger/jaeger_client_filter.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_client_filter.h b/trpc/tracing/jaeger/jaeger_client_filter.h
index b198cf6..f9ac166 100644
--- a/trpc/tracing/jaeger/jaeger_client_filter.h
+++ b/trpc/tracing/jaeger/jaeger_client_filter.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_client_filter_test.cc b/trpc/tracing/jaeger/jaeger_client_filter_test.cc
index 9eadf00..7b522f4 100644
--- a/trpc/tracing/jaeger/jaeger_client_filter_test.cc
+++ b/trpc/tracing/jaeger/jaeger_client_filter_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_common.cc b/trpc/tracing/jaeger/jaeger_common.cc
index 09fccf8..8c0e1c6 100644
--- a/trpc/tracing/jaeger/jaeger_common.cc
+++ b/trpc/tracing/jaeger/jaeger_common.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_common.h b/trpc/tracing/jaeger/jaeger_common.h
index ba5a017..0bbd5b5 100644
--- a/trpc/tracing/jaeger/jaeger_common.h
+++ b/trpc/tracing/jaeger/jaeger_common.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_common_test.cc b/trpc/tracing/jaeger/jaeger_common_test.cc
index e49a122..b19d52b 100644
--- a/trpc/tracing/jaeger/jaeger_common_test.cc
+++ b/trpc/tracing/jaeger/jaeger_common_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_server_filter.cc b/trpc/tracing/jaeger/jaeger_server_filter.cc
index e569594..d1925bd 100644
--- a/trpc/tracing/jaeger/jaeger_server_filter.cc
+++ b/trpc/tracing/jaeger/jaeger_server_filter.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_server_filter.h b/trpc/tracing/jaeger/jaeger_server_filter.h
index b389621..026b3d7 100644
--- a/trpc/tracing/jaeger/jaeger_server_filter.h
+++ b/trpc/tracing/jaeger/jaeger_server_filter.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_server_filter_test.cc b/trpc/tracing/jaeger/jaeger_server_filter_test.cc
index d4a3c52..4658cc8 100644
--- a/trpc/tracing/jaeger/jaeger_server_filter_test.cc
+++ b/trpc/tracing/jaeger/jaeger_server_filter_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_text_map_carrier.cc b/trpc/tracing/jaeger/jaeger_text_map_carrier.cc
index 3c4e528..4675c1c 100644
--- a/trpc/tracing/jaeger/jaeger_text_map_carrier.cc
+++ b/trpc/tracing/jaeger/jaeger_text_map_carrier.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_text_map_carrier.h b/trpc/tracing/jaeger/jaeger_text_map_carrier.h
index ca6ad52..b3ff1e3 100644
--- a/trpc/tracing/jaeger/jaeger_text_map_carrier.h
+++ b/trpc/tracing/jaeger/jaeger_text_map_carrier.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_text_map_carrier_test.cc b/trpc/tracing/jaeger/jaeger_text_map_carrier_test.cc
index f6a7854..0c47844 100644
--- a/trpc/tracing/jaeger/jaeger_text_map_carrier_test.cc
+++ b/trpc/tracing/jaeger/jaeger_text_map_carrier_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing.cc b/trpc/tracing/jaeger/jaeger_tracing.cc
index ad5d7ca..df91628 100644
--- a/trpc/tracing/jaeger/jaeger_tracing.cc
+++ b/trpc/tracing/jaeger/jaeger_tracing.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing.h b/trpc/tracing/jaeger/jaeger_tracing.h
index e4b6b49..fff79fc 100644
--- a/trpc/tracing/jaeger/jaeger_tracing.h
+++ b/trpc/tracing/jaeger/jaeger_tracing.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_api.cc b/trpc/tracing/jaeger/jaeger_tracing_api.cc
index e217bc8..a175c24 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_api.cc
+++ b/trpc/tracing/jaeger/jaeger_tracing_api.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_api.h b/trpc/tracing/jaeger/jaeger_tracing_api.h
index cb4dabc..93bf6a1 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_api.h
+++ b/trpc/tracing/jaeger/jaeger_tracing_api.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_api_test.cc b/trpc/tracing/jaeger/jaeger_tracing_api_test.cc
index 7d904d6..982f402 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_api_test.cc
+++ b/trpc/tracing/jaeger/jaeger_tracing_api_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_conf.cc b/trpc/tracing/jaeger/jaeger_tracing_conf.cc
index a86783d..4aacb3d 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_conf.cc
+++ b/trpc/tracing/jaeger/jaeger_tracing_conf.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_conf.h b/trpc/tracing/jaeger/jaeger_tracing_conf.h
index c597cdb..a7315e7 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_conf.h
+++ b/trpc/tracing/jaeger/jaeger_tracing_conf.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_conf_parser.h b/trpc/tracing/jaeger/jaeger_tracing_conf_parser.h
index bfd332d..a0aaf64 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_conf_parser.h
+++ b/trpc/tracing/jaeger/jaeger_tracing_conf_parser.h
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_conf_test.cc b/trpc/tracing/jaeger/jaeger_tracing_conf_test.cc
index 3cb7c84..7783f56 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_conf_test.cc
+++ b/trpc/tracing/jaeger/jaeger_tracing_conf_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,
diff --git a/trpc/tracing/jaeger/jaeger_tracing_test.cc b/trpc/tracing/jaeger/jaeger_tracing_test.cc
index e2f8cff..210c4a5 100644
--- a/trpc/tracing/jaeger/jaeger_tracing_test.cc
+++ b/trpc/tracing/jaeger/jaeger_tracing_test.cc
@@ -2,7 +2,7 @@
 //
 // Tencent is pleased to support the open source community by making tRPC available.
 //
-// Copyright (C) 2023 THL A29 Limited, a Tencent company.
+// Copyright (C) 2023 Tencent.
 // All rights reserved.
 //
 // If you have downloaded a copy of the tRPC source code from Tencent,