license header

interfaces/IConsensusClient.sol

@@ -1,9 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {StateMachineHeight} from "./Message.sol";
 
-
 // The state commiment identifies a commiment to some intermediate state in the state machine.
 // This contains some metadata about the state machine like it's own timestamp at the time of this commitment.
 struct StateCommitment {

interfaces/IDispatcher.sol

@@ -1,4 +1,16 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {PostRequest, StateMachineHeight} from "./Message.sol";

interfaces/IHandler.sol

@@ -1,15 +1,20 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {IIsmpHost} from "./IIsmpHost.sol";
-import {
-	PostRequestMessage,
-	PostResponseMessage,
-	GetResponseMessage,
-	PostRequestTimeoutMessage,
-	PostResponseTimeoutMessage,
-	GetTimeoutMessage
-} from "./Message.sol";
+import {PostRequestMessage, PostResponseMessage, GetResponseMessage, PostRequestTimeoutMessage, PostResponseTimeoutMessage, GetTimeoutMessage} from "./Message.sol";
 
 /*
  * @title The Ismp Handler

interfaces/IIsmpHost.sol

@@ -1,4 +1,16 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {StateCommitment, StateMachineHeight} from "./IConsensusClient.sol";

interfaces/IIsmpModule.sol

@@ -1,4 +1,16 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {PostRequest, PostResponse, GetResponse, GetRequest} from "./Message.sol";

interfaces/Message.sol

@@ -1,4 +1,16 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {StorageValue} from "@polytope-labs/solidity-merkle-trees/src/Types.sol";

interfaces/StateMachine.sol

@@ -1,4 +1,16 @@
-// SPDX-License-Identifier: UNLICENSED
+// Copyright (C) Polytope Labs Ltd.
+// SPDX-License-Identifier: Apache-2.0
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 pragma solidity ^0.8.17;
 
 import {Strings} from "@openzeppelin/contracts/utils/Strings.sol";