diff --git a/generate/src/error.rs b/generate/src/error.rs
index 615f23c..c1194a8 100644
--- a/generate/src/error.rs
+++ b/generate/src/error.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 #![allow(unused)]
 
 use std::error::Error as StdError;
diff --git a/generate/src/main.rs b/generate/src/main.rs
index 80f617c..a2125b5 100644
--- a/generate/src/main.rs
+++ b/generate/src/main.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 mod error;
 mod types;
 mod utils;
diff --git a/generate/src/types/cli.rs b/generate/src/types/cli.rs
index 49b7fc3..eb7b4d0 100644
--- a/generate/src/types/cli.rs
+++ b/generate/src/types/cli.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use clap::Parser;
 use serde::Serialize;
 
diff --git a/generate/src/types/mod.rs b/generate/src/types/mod.rs
index 8bad8a4..4f2007d 100644
--- a/generate/src/types/mod.rs
+++ b/generate/src/types/mod.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 pub mod settings;
 pub mod specification;
 pub mod cli;
\ No newline at end of file
diff --git a/generate/src/types/settings.rs b/generate/src/types/settings.rs
index dfd9f1e..49c4ac2 100644
--- a/generate/src/types/settings.rs
+++ b/generate/src/types/settings.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use std::path::PathBuf;
 use serde::{Deserialize, Serialize};
 use serde_yaml::Value;
diff --git a/generate/src/types/specification.rs b/generate/src/types/specification.rs
index 88d36fd..f6e311a 100644
--- a/generate/src/types/specification.rs
+++ b/generate/src/types/specification.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::utils::generate::generate_jsonpath_from_tagged_values;
 use serde::{Deserialize, Serialize};
 use serde_yaml::Value;
diff --git a/generate/src/utils/funcs.rs b/generate/src/utils/funcs.rs
index 3dff777..9b73de4 100644
--- a/generate/src/utils/funcs.rs
+++ b/generate/src/utils/funcs.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use std::collections::HashSet;
 use std::path::PathBuf;
 
diff --git a/generate/src/utils/generate.rs b/generate/src/utils/generate.rs
index a98cecc..0af23dc 100644
--- a/generate/src/utils/generate.rs
+++ b/generate/src/utils/generate.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use serde_yaml::Value;
 use crate::error::Result;
 
diff --git a/generate/src/utils/mod.rs b/generate/src/utils/mod.rs
index 6b1d26e..4bb9fff 100644
--- a/generate/src/utils/mod.rs
+++ b/generate/src/utils/mod.rs
@@ -1,2 +1,6 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 pub mod generate;
 pub mod funcs;
\ No newline at end of file
diff --git a/src/disclosure.rs b/src/disclosure.rs
index 5c0ea65..795829b 100644
--- a/src/disclosure.rs
+++ b/src/disclosure.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::utils::{base64_hash, base64url_encode};
 #[cfg(not(feature = "mock_salts"))]
 use crate::utils::generate_salt;
diff --git a/src/error.rs b/src/error.rs
index ab8efd8..4dfb737 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 pub type Result<T> = ::core::result::Result<T, Error>;
 
 #[derive(Debug, thiserror::Error, strum::IntoStaticStr)]
diff --git a/src/holder.rs b/src/holder.rs
index 00367cc..ee7f62b 100644
--- a/src/holder.rs
+++ b/src/holder.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::{error, SDJWTJson, SDJWTSerializationFormat};
 use error::{Error, Result};
 use jsonwebtoken::{Algorithm, EncodingKey, Header};
diff --git a/src/issuer.rs b/src/issuer.rs
index c156259..d13e616 100644
--- a/src/issuer.rs
+++ b/src/issuer.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::{error, SDJWTJson};
 use error::Result;
 use std::collections::{HashMap, VecDeque};
diff --git a/src/lib.rs b/src/lib.rs
index a77559d..07f9e7e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::error::Error;
 use crate::utils::{base64_hash, base64url_decode, jwt_payload_decode};
 
diff --git a/src/utils.rs b/src/utils.rs
index 76880a1..cfff8ce 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::error;
 use crate::error::Error;
 use crate::error::Error::DeserializationError;
diff --git a/src/verifier.rs b/src/verifier.rs
index e737212..9b92e9a 100644
--- a/src/verifier.rs
+++ b/src/verifier.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::SDJWTSerializationFormat;
 use crate::error::Error;
 use crate::error::Result;
diff --git a/tests/demos.rs b/tests/demos.rs
index 0d2b616..5d5d517 100644
--- a/tests/demos.rs
+++ b/tests/demos.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 use crate::utils::fixtures::{
     ADDRESS_CLAIMS, ADDRESS_ONLY_STRUCTURED_JSONPATH, ADDRESS_ONLY_STRUCTURED_ONE_OPEN_JSONPATH,
     ARRAYED_CLAIMS, ARRAYED_CLAIMS_JSONPATH, COMPLEX_EIDAS_CLAIMS, COMPLEX_EIDAS_JSONPATH,
diff --git a/tests/utils/fixtures.rs b/tests/utils/fixtures.rs
index ebbb10e..9d74c40 100644
--- a/tests/utils/fixtures.rs
+++ b/tests/utils/fixtures.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 pub const ISSUER_KEY: &str = "-----BEGIN PRIVATE KEY-----\nMIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgUr2bNKuBPOrAaxsR\nnbSH6hIhmNTxSGXshDSUD1a1y7ihRANCAARvbx3gzBkyPDz7TQIbjF+ef1IsxUwz\nX1KWpmlVv+421F7+c1sLqGk4HUuoVeN8iOoAcE547pJhUEJyf5Asc6pP\n-----END PRIVATE KEY-----\n";
 pub const ISSUER_PUBLIC_KEY: &str = "-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEb28d4MwZMjw8+00CG4xfnn9SLMVM\nM19SlqZpVb/uNtRe/nNbC6hpOB1LqFXjfIjqAHBOeO6SYVBCcn+QLHOqTw==\n-----END PUBLIC KEY-----\n";
 pub const HOLDER_KEY: &str = "-----BEGIN PRIVATE KEY-----\nMIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQg5K5SCos8zf9zRemG\nGUl6yfok+/NiiryNZsvANWMhF+KhRANCAARMIARHX1m+7c4cXiPhbi99JWgcg/Ug\nuKUOWzu8J4Z6Z2cY4llm2TEBh1VilUOIW0iIq7FX7nnAhOreI0/Rdh2U\n-----END PRIVATE KEY-----\n";
diff --git a/tests/utils/mod.rs b/tests/utils/mod.rs
index 0559679..4f9d29d 100644
--- a/tests/utils/mod.rs
+++ b/tests/utils/mod.rs
@@ -1,3 +1,7 @@
+// Copyright (c) 2024 DSR Corporation, Denver, Colorado.
+// https://www.dsr-corporation.com
+// SPDX-License-Identifier: Apache-2.0
+
 #![allow(unused)]
 
 pub mod fixtures;