Add GPL-3.0 licence

LICENSE-EXCEPTION

@@ -0,0 +1,42 @@
+Linking exception for the Dotify EVM contracts
+
+Copyright (C) 2026 Kevin Nzeng Essimengane
+
+Dotify as a whole is licensed under GPL-3.0 (see LICENSE).
+
+The Solidity sources under `contracts/evm/contracts/` carry an additional
+linking exception, and are therefore licensed under:
+
+    GPL-3.0-only WITH Classpath-exception-2.0
+
+This is the same linking exception Parity Technologies applies to the
+Substrate client. The exception text follows.
+
+  Linking this library statically or dynamically with other modules is making
+  a combined work based on this library. Thus, the terms and conditions of the
+  GNU General Public License cover the whole combination.
+
+  As a special exception, the copyright holders of this library give you
+  permission to link this library with independent modules to produce an
+  executable, regardless of the license terms of these independent modules,
+  and to copy and distribute the resulting executable under terms of your
+  choice, provided that you also meet, for each linked independent module,
+  the terms and conditions of the license of that module. An independent
+  module is a module which is not derived from or based on this library. If
+  you modify this library, you may extend this exception to your version of
+  the library, but you are not obligated to do so. If you do not wish to do
+  so, delete this exception statement from your version.
+
+Why the contracts differ from the rest of the repository
+
+An artist's SmartRuntime is meant to be deployed, extended and composed with.
+Under a bare GPL, any contract importing a Dotify pallet would arguably become
+a derivative work and have to adopt the same licence, which would make the
+runtime unusable for the artists it exists to serve.
+
+The exception keeps the pallets themselves copyleft - improvements to Dotify's
+access, royalty and registry logic stay open - while leaving an importing
+contract free to choose its own licence.
+
+The web app, the API and the documentation carry no such exception. They are
+plain GPL-3.0.

contracts/evm/contracts/ArtistDirectory.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title ArtistDirectory

contracts/evm/contracts/ArtistRuntimeFactory.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { SmartRuntime } from './SmartRuntime.sol';

contracts/evm/contracts/DotifyRuntimeInitializer.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibDiamond } from './libraries/LibDiamond.sol';

contracts/evm/contracts/LibDotify.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 library LibDotify {

contracts/evm/contracts/MusicRightsRegistry.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import './LibDotify.sol';

contracts/evm/contracts/SmartRuntime.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { IERC165 } from './interfaces/IERC165.sol';

contracts/evm/contracts/interfaces/IDiamondCut.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title IDiamondCut — ERC-2535 Diamond Cut Interface

contracts/evm/contracts/interfaces/IDiamondLoupe.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title IDiamondLoupe — ERC-2535 Diamond Loupe Interface

contracts/evm/contracts/interfaces/IERC165.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title ERC-165 Standard Interface Detection

contracts/evm/contracts/interfaces/IPersonhood.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title IPersonhood — Proof of Personhood precompile (Individuality)

contracts/evm/contracts/libraries/LibDiamond.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { IDiamondCut } from '../interfaces/IDiamondCut.sol';

contracts/evm/contracts/libraries/LibMusicAccess.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibMusicRegistry } from './LibMusicRegistry.sol';

contracts/evm/contracts/libraries/LibMusicNFT.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title LibMusicNFT

contracts/evm/contracts/libraries/LibMusicRegistry.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title LibMusicRegistry

contracts/evm/contracts/libraries/LibMusicRoyalties.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title LibMusicRoyalties

contracts/evm/contracts/libraries/LibPersonhood.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { IPersonhood } from '../interfaces/IPersonhood.sol';

contracts/evm/contracts/libraries/LibReentrancyGuard.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @title LibReentrancyGuard

contracts/evm/contracts/pallets/DiamondCutPallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { IDiamondCut } from '../interfaces/IDiamondCut.sol';

contracts/evm/contracts/pallets/DiamondLoupePallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { IDiamondLoupe } from '../interfaces/IDiamondLoupe.sol';

contracts/evm/contracts/pallets/MusicAccessPallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibDiamond } from '../libraries/LibDiamond.sol';

contracts/evm/contracts/pallets/MusicNFTPallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibMusicNFT } from '../libraries/LibMusicNFT.sol';

contracts/evm/contracts/pallets/MusicRegistryPallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibDiamond } from '../libraries/LibDiamond.sol';

contracts/evm/contracts/pallets/MusicRoyaltiesPallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibMusicRegistry } from '../libraries/LibMusicRegistry.sol';

contracts/evm/contracts/pallets/OwnershipPallet.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 import { LibDiamond } from '../libraries/LibDiamond.sol';

contracts/evm/contracts/test/MockPersonhoodPrecompile.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @dev TEST-ONLY stand-in for the Individuality personhood precompile.

contracts/evm/contracts/test/ReentrantRoyaltyRecipient.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @dev TEST-ONLY helper. A malicious royalty recipient that attempts to re-enter

contracts/evm/contracts/test/UnsafeMusicRegistryRegisterMock.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: MIT
+// SPDX-License-Identifier: GPL-3.0-only WITH Classpath-exception-2.0
 pragma solidity ^0.8.28;
 
 /// @notice Test-only facet that exposes the production registration selector

web/scripts/generate-cdm-metadata.mjs

@@ -43,7 +43,7 @@ const publishedAt = publishedAtArg !== -1 ? process.argv[publishedAtArg + 1] : n
 const COMMON = {
   homepage: 'https://muzinga.netlify.app',
   repository: 'https://github.com/knzeng-e/dotify',
-  license: 'MIT',
+  license: 'GPL-3.0-only WITH Classpath-exception-2.0',
   authors: ['Dotify'],
   keywords: ['music', 'dotify', 'artist-runtime', 'access-control']
 };

web/src/generated/contracts/cdm-metadata/cids.json

@@ -1,12 +1,12 @@
 {
   "@dotify/artist-directory": {
     "file": "dotify-artist-directory.json",
-    "cid": "bafk2bzacebiynqo7tjvxa3xlvf6pphgq3nzatqjbn3yo2fszrlvxibtsr4ce6",
-    "bytes": 4430
+    "cid": "bafk2bzacebcem3sk7msybseyhx3rmqybdqo2t2pdypvmnvyn2idaibe6xx4pq",
+    "bytes": 4468
   },
   "@dotify/artist-runtime-factory": {
     "file": "dotify-artist-runtime-factory.json",
-    "cid": "bafk2bzaceckm27ft3kvt4mjs67hzklylws5fp5d4z4nrvpa34gmzndtqz7lwg",
-    "bytes": 7585
+    "cid": "bafk2bzaceabgw5kefjrqqazehtdfhz7qepzauovsy7zussxmulmvscihaozra",
+    "bytes": 7623
   }
 }

web/src/generated/contracts/cdm-metadata/dotify-artist-directory.json

@@ -180,7 +180,7 @@
   ],
   "homepage": "https://muzinga.netlify.app",
   "repository": "https://github.com/knzeng-e/dotify",
-  "license": "MIT",
+  "license": "GPL-3.0-only WITH Classpath-exception-2.0",
   "authors": [
     "Dotify"
   ],

web/src/generated/contracts/cdm-metadata/dotify-artist-runtime-factory.json

@@ -320,7 +320,7 @@
   ],
   "homepage": "https://muzinga.netlify.app",
   "repository": "https://github.com/knzeng-e/dotify",
-  "license": "MIT",
+  "license": "GPL-3.0-only WITH Classpath-exception-2.0",
   "authors": [
     "Dotify"
   ],