diff --git a/lightning-transaction-sync/src/common.rs b/lightning-transaction-sync/src/common.rs
index 1d6e64bab00..88e52de186d 100644
--- a/lightning-transaction-sync/src/common.rs
+++ b/lightning-transaction-sync/src/common.rs
@@ -1,3 +1,10 @@
+// This file is Copyright its original authors, visible in version control history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. You may not use this file except in
+// accordance with one or both of these licenses.
+
 use bitcoin::block::Header;
 use bitcoin::{BlockHash, OutPoint, Transaction, Txid};
 use lightning::chain::channelmonitor::ANTI_REORG_DELAY;
diff --git a/lightning-transaction-sync/src/electrum.rs b/lightning-transaction-sync/src/electrum.rs
index 015cb42c639..78fca1b168f 100644
--- a/lightning-transaction-sync/src/electrum.rs
+++ b/lightning-transaction-sync/src/electrum.rs
@@ -1,3 +1,10 @@
+// This file is Copyright its original authors, visible in version control history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. You may not use this file except in
+// accordance with one or both of these licenses.
+
 use crate::common::{ConfirmedTx, FilterQueue, SyncState};
 use crate::error::{InternalError, TxSyncError};
 
diff --git a/lightning-transaction-sync/src/error.rs b/lightning-transaction-sync/src/error.rs
index be59cb026b4..57068b151d2 100644
--- a/lightning-transaction-sync/src/error.rs
+++ b/lightning-transaction-sync/src/error.rs
@@ -1,3 +1,10 @@
+// This file is Copyright its original authors, visible in version control history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. You may not use this file except in
+// accordance with one or both of these licenses.
+
 use std::fmt;
 
 #[derive(Debug)]
diff --git a/lightning-transaction-sync/src/esplora.rs b/lightning-transaction-sync/src/esplora.rs
index 564d7f1773a..8b8b39cfb4f 100644
--- a/lightning-transaction-sync/src/esplora.rs
+++ b/lightning-transaction-sync/src/esplora.rs
@@ -1,3 +1,10 @@
+// This file is Copyright its original authors, visible in version control history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. You may not use this file except in
+// accordance with one or both of these licenses.
+
 use crate::common::{ConfirmedTx, FilterQueue, SyncState};
 use crate::error::{InternalError, TxSyncError};
 
diff --git a/lightning-transaction-sync/src/lib.rs b/lightning-transaction-sync/src/lib.rs
index 96e0c0dfe9c..9c6831cef5d 100644
--- a/lightning-transaction-sync/src/lib.rs
+++ b/lightning-transaction-sync/src/lib.rs
@@ -1,3 +1,10 @@
+// This file is Copyright its original authors, visible in version control history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. You may not use this file except in
+// accordance with one or both of these licenses.
+
 //! Provides utilities for syncing LDK via the transaction-based [`Confirm`] interface.
 //!
 //! The provided synchronization clients need to be registered with a [`ChainMonitor`] via the