Computer-Tsu · Computer-Tsu · Apr 13, 2026 · Apr 20, 2026
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -2,7 +2,8 @@
 # PortPane by ShackDesk
 # Project : https://github.com/Computer-Tsu/shackdesk-portpane
 # Author  : Mark McDow (N4TEK) — My Computer Guru LLC
-# License : MIT + official-build commercial terms (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+# License : MIT source code + official builds/services
+#           (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
 #
 # Workflow : Build · Test · Publish · Release
 # Purpose  : Main CI/CD pipeline. Builds and tests on every push and PR to main.
@@ -338,7 +339,11 @@ jobs:
           $pattern = "(?s)## \[$version\].*?(?=## \[|\z)"
           $match   = [regex]::Match($content, $pattern)
           $notes   = if ($match.Success) { $match.Value.Trim() } else { "See CHANGELOG.md for details." }
-          $notes | Out-File -FilePath ./release_notes.md -Encoding utf8
+          @"
+$notes
+
+Code signing policy: https://shackdesk.com/portpane/code-signing-policy/
+"@ | Out-File -FilePath ./release_notes.md -Encoding utf8
           echo "notes_file=./release_notes.md" >> $env:GITHUB_OUTPUT
 
       - name: Rename artifacts with version
@@ -446,6 +451,8 @@ jobs:
 
             This build has a 14-day expiry. Always download the current version from this page.
             Not recommended for general use — for testing purposes only.
+
+            Code signing policy: https://shackdesk.com/portpane/code-signing-policy/
           prerelease: true
           files: |
             ./release/PortPane-*.exe

diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
@@ -2,7 +2,8 @@
 # PortPane by ShackDesk
 # Project : https://github.com/Computer-Tsu/shackdesk-portpane
 # Author  : Mark McDow (N4TEK) — My Computer Guru LLC
-# License : MIT + official-build commercial terms (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+# License : MIT source code + official builds/services
+#           (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
 #
 # Workflow : CodeQL Security Analysis
 # Purpose  : Scans C# source code for security vulnerabilities using GitHub's

diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
@@ -2,7 +2,8 @@
 # PortPane by ShackDesk
 # Project : https://github.com/Computer-Tsu/shackdesk-portpane
 # Author  : Mark McDow (N4TEK) — My Computer Guru LLC
-# License : MIT + official-build commercial terms (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+# License : MIT source code + official builds/services
+#           (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
 #
 # Workflow : Dependency Review
 # Purpose  : Checks NuGet package changes introduced in a pull request against

diff --git a/.github/workflows/format-check.yml b/.github/workflows/format-check.yml
@@ -2,7 +2,8 @@
 # PortPane by ShackDesk
 # Project : https://github.com/Computer-Tsu/shackdesk-portpane
 # Author  : Mark McDow (N4TEK) — My Computer Guru LLC
-# License : MIT + official-build commercial terms (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+# License : MIT source code + official builds/services
+#           (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
 #
 # Workflow : .NET Format Check
 # Purpose  : Enforces consistent C# code formatting on every pull request.

diff --git a/.github/workflows/json-validate.yml b/.github/workflows/json-validate.yml
@@ -2,7 +2,8 @@
 # PortPane by ShackDesk
 # Project : https://github.com/Computer-Tsu/shackdesk-portpane
 # Author  : Mark McDow (N4TEK) — My Computer Guru LLC
-# License : MIT + official-build commercial terms (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+# License : MIT source code + official builds/services
+#           (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
 #
 # Workflow : JSON Data File Validation
 # Purpose  : Validates usb_devices.json whenever the data/ directory changes.

diff --git a/.github/workflows/markdown-lint.yml b/.github/workflows/markdown-lint.yml
@@ -2,7 +2,8 @@
 # PortPane by ShackDesk
 # Project : https://github.com/Computer-Tsu/shackdesk-portpane
 # Author  : Mark McDow (N4TEK) — My Computer Guru LLC
-# License : MIT + official-build commercial terms (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+# License : MIT source code + official builds/services
+#           (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
 #
 # Workflow : Markdown Lint
 # Purpose  : Checks all Markdown files for formatting consistency and common

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -3,7 +3,7 @@
   PortPane by ShackDesk — Changelog
   Project  : https://github.com/Computer-Tsu/shackdesk-portpane
   Author   : Mark McDow (N4TEK) — My Computer Guru LLC
-  License  : MIT / Commercial (see LICENSE-MIT.md, LICENSE-COMMERCIAL.md)
+  License  : MIT source code + official builds/services (see LICENSE-MIT.md, OFFICIAL_BUILDS_AND_SERVICES.md)
   ════════════════════════════════════════════════════════════════════════════
 
   FORMAT
@@ -188,7 +188,8 @@ Versioning follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 - Dark theme with system High Contrast mode compatibility
 - Single-instance enforcement via named Mutex
 - Velopack auto-update (background, rate-limited to once per 24h, non-interrupting)
-- MIT / Commercial dual license with RSA offline license validation (key placeholder)
+- MIT source-code licensing with official-build registration validation
+  infrastructure (key placeholder)
 - Opt-in anonymous telemetry (off by default)
   - `Help → View Collected Data` viewer with Send/Clear/Close
   - Pending report queue (max 10, oldest discarded)

diff --git a/CLA.md b/CLA.md
@@ -5,10 +5,11 @@
 *This summary is not legal text — the full agreement is below.*
 
 - **You keep ownership** of everything you contribute. You are not giving up your copyright.
-- **You give permission** for your contribution to be used in both the free (MIT) and
-  paid (commercial) versions of PortPane.
-- **This is standard practice** for dual-licensed open source projects. Without this
-  agreement, the project could not legally offer a commercial version.
+- **You give permission** for your contribution to be used in both the MIT-licensed
+  source code and official ShackDesk builds/services.
+- **This is standard practice** for projects that offer open source code alongside
+  official builds, personalization, and support. Without this agreement, the
+  project could not consistently offer those official ShackDesk services.
 - Submitting a pull request on GitHub means you agree to these terms.
 
 ---
@@ -33,7 +34,10 @@ By submitting a pull request or any other contribution to PortPane by ShackDesk,
 
 ## Distribution Models
 
-1. You acknowledge that source code in this repository is distributed under MIT, and that official ShackDesk-distributed binaries/services may be offered under separate commercial terms. You agree your contributions may be used in both distribution models at the maintainer's discretion.
+1. You acknowledge that source code in this repository is distributed under MIT,
+   and that ShackDesk may offer official builds, optional registration/
+   personalization, and support under separate commercial terms. You agree your
+   contributions may be used in both contexts at the maintainer's discretion.
 
 ## No Obligation
 

diff --git a/CODE_SIGNING_POLICY.md b/CODE_SIGNING_POLICY.md
@@ -14,11 +14,11 @@ All source code in this repository is licensed under the MIT License
 
 - **Source builds**: Any binaries you build yourself from this repository are
   governed by MIT terms.
-- **Official ShackDesk builds**: Binaries published by ShackDesk may include
-  additional branding/support/licensing terms described in
-  [LICENSE-COMMERCIAL.md](LICENSE-COMMERCIAL.md).
+- **Official ShackDesk builds and services**: See
+  [OFFICIAL_BUILDS_AND_SERVICES.md](OFFICIAL_BUILDS_AND_SERVICES.md).
 
-Commercial terms do not reduce or override MIT rights for source code.
+Official ShackDesk services do not reduce or override MIT rights for source
+code.
 
 ## Trusted Build Intent
 
@@ -34,6 +34,8 @@ The CI workflow is structured to support a trusted signing flow:
 - CI currently builds and publishes **unsigned** artifacts.
 - Signing is intentionally a placeholder in `.github/workflows/build.yml`.
 - SignPath integration is planned but not yet enabled in this repository.
+- Initial SignPath rollout is intended for **alpha** releases first, then
+  **beta**. Stable may later use SignPath or a separate signing process.
 
 ## Future SignPath Notes
 

diff --git a/LEGAL.md b/LEGAL.md
@@ -9,7 +9,7 @@ PortPane™ is a trademark of My Computer Guru LLC.
 ## License
 
 - **Source code in this repository:** MIT License ([LICENSE-MIT.md](LICENSE-MIT.md)).
-- **Official ShackDesk-distributed binaries/services:** may be subject to additional commercial terms ([LICENSE-COMMERCIAL.md](LICENSE-COMMERCIAL.md)).
+- **Official ShackDesk builds and services:** see [OFFICIAL_BUILDS_AND_SERVICES.md](OFFICIAL_BUILDS_AND_SERVICES.md).
 
 ---
 
@@ -61,10 +61,9 @@ USB device identification data sourced in part from the
 
 ---
 
-## Attribution Requirement
+## Official Build Provenance
 
-All distributions of PortPane, including builds under the commercial license,
-must retain the `Attribution.cs` copyright fingerprint embedded in the binary.
-Fingerprint: `PortPane-ShackDesk-MCG-f8a2c4e6-3b1d-4f9a-8e7c-5d2b0a6c1e4f`
+ShackDesk retains the `Attribution.cs` fingerprint in official builds for
+provenance and support purposes.
 
-Removal constitutes a license violation.
+Fingerprint: `PortPane-ShackDesk-MCG-f8a2c4e6-3b1d-4f9a-8e7c-5d2b0a6c1e4f`
diff --git a/LICENSE-COMMERCIAL.md b/LICENSE-COMMERCIAL.md
diff --git a/LICENSE-MIT.md b/LICENSE-MIT.md
@@ -1,6 +1,6 @@
 # MIT License
 
-Copyright (c) 2026 My Computer Guru LLC
+Copyright (c) 2024-2026 Mark McDow (N4TEK), My Computer Guru LLC
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -19,8 +19,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
-
-## Additional Terms
-
-The attribution and fingerprint files included with PortPane must be preserved
-in source and binary redistributions.
diff --git a/OFFICIAL_BUILDS_AND_SERVICES.md b/OFFICIAL_BUILDS_AND_SERVICES.md
@@ -0,0 +1,53 @@
+# Official Builds and Services — PortPane by ShackDesk
+
+Copyright © 2024-2026 Mark McDow (N4TEK), My Computer Guru LLC.
+
+This document describes optional ShackDesk-distributed builds and paid services
+for PortPane. It does not reduce, replace, or override the MIT rights granted
+for source code in this repository.
+
+## Source Code
+
+All source code in this repository is licensed under the MIT License. If you
+build PortPane yourself from this repository, the resulting build is governed
+by MIT and applicable third-party licenses.
+
+## Official ShackDesk Offerings
+
+ShackDesk may provide one or more of the following for official PortPane builds:
+
+- Official ShackDesk-distributed binaries
+- Optional registration files for official builds
+- Optional personalization such as operator name, callsign, club, or EMCOMM identity
+- Optional paid support or update assistance
+
+## Registration and Personalization
+
+- Registration files are issued by ShackDesk for official builds only.
+- They may unlock personalization, branding, or future paid conveniences in
+  official ShackDesk builds.
+- Registration files may not be shared, resold, or transferred unless
+  ShackDesk explicitly allows it.
+
+## Support Services
+
+- Paid support is included only when explicitly purchased or granted.
+- Free community support may still be available through public GitHub
+  discussions, documentation, or issue reporting.
+
+## Branding and Provenance
+
+- ShackDesk names, logos, trademarks, and trade dress remain the property of
+  My Computer Guru LLC.
+- Official ShackDesk builds may include provenance markers, signatures, support
+  identifiers, or registration mechanisms.
+
+## Open Source Notice
+
+Nothing in this document limits your rights under the MIT License for source
+code in this repository.
+
+## Disclaimer
+
+Official builds and services are provided "AS IS" unless a separate written
+support agreement says otherwise.
diff --git a/README.md b/README.md
@@ -197,15 +197,14 @@ If PortPane saves you time, consider leaving a star on GitHub.
 
 ## License
 
-**Source code license:**
-
-- **MIT** — all source code in this repository is licensed under MIT. See [LICENSE-MIT.md](LICENSE-MIT.md).
-- If you compile from this repository yourself, your resulting build is governed by MIT (plus applicable third-party licenses).
-
-**Official ShackDesk build terms:**
-
-- **Commercial terms** may apply to official ShackDesk-distributed binaries, branding/licensing services, and support offerings. See [LICENSE-COMMERCIAL.md](LICENSE-COMMERCIAL.md).
-- These official-build terms do **not** limit your MIT rights for source code from this repository.
+PortPane source code is licensed under MIT. Official ShackDesk builds, optional
+registration/personalization, and support are offered under separate
+commercial terms.
+
+- **Source code:** MIT. See [LICENSE-MIT.md](LICENSE-MIT.md).
+- **Official ShackDesk builds and services:** see [OFFICIAL_BUILDS_AND_SERVICES.md](OFFICIAL_BUILDS_AND_SERVICES.md).
+- If you compile PortPane yourself from this repository, your resulting build is
+  governed by MIT (plus applicable third-party licenses).
 
 ---
 

diff --git a/data/usb_devices.json b/data/usb_devices.json
@@ -3,7 +3,7 @@
   "_comment_2": "  PortPane by ShackDesk — USB Device Database",
   "_comment_3": "  Project  : https://github.com/Computer-Tsu/shackdesk-portpane",
   "_comment_4": "  Author   : Mark McDow (N4TEK) — My Computer Guru LLC",
-  "_comment_5": "  License  : MIT / Commercial (see LICENSE-MIT.md)",
+  "_comment_5": "  License  : MIT source code (see LICENSE-MIT.md)",
   "_comment_6": "════════════════════════════════════════════════════════════════════════",
   "_comment_7": "",
   "_comment_8": "  PURPOSE",

diff --git a/installer/PortPane.iss b/installer/PortPane.iss
@@ -63,9 +63,9 @@ Source: "..\publish\{#AppExeName}.sha256"; DestDir: "{app}"; Flags: ignoreversio
 ; USB device database (bundled — also shipped as separate artifact for updates)
 Source: "..\data\usb_devices.json"; DestDir: "{app}\Data"; Flags: ignoreversion
 
-; License files
-Source: "..\LICENSE-MIT.md";       DestDir: "{app}"; Flags: ignoreversion
-Source: "..\LICENSE-COMMERCIAL.md"; DestDir: "{app}"; Flags: ignoreversion
+; Legal and service files
+Source: "..\LICENSE-MIT.md";                    DestDir: "{app}"; Flags: ignoreversion
+Source: "..\OFFICIAL_BUILDS_AND_SERVICES.md"; DestDir: "{app}"; Flags: ignoreversion
 
 [Icons]
 Name: "{group}\{#AppName}";            Filename: "{app}\{#AppExeName}"; Comment: "{#AppDescription}"

diff --git a/src/PortPane/Attribution.cs b/src/PortPane/Attribution.cs
@@ -3,8 +3,7 @@
 // All rights reserved.
 //
 // This file contains attribution metadata embedded as a copyright fingerprint.
-// It is intentionally retained in all distributions, including commercial builds.
-// Removal or modification of this file constitutes a violation of the license terms.
+// ShackDesk retains it in official builds for provenance and support purposes.
 
 using System.Runtime.CompilerServices;
 
@@ -14,8 +13,7 @@
 namespace PortPane;
 
 /// <summary>
-/// Hidden copyright fingerprint. Present in all builds (MIT and commercial).
-/// Do not remove, rename, or suppress this class.
+/// Hidden copyright fingerprint. Present in official ShackDesk builds.
 /// The Fingerprint property is referenced at startup to prevent compiler removal.
 /// </summary>
 internal static class Attribution
@@ -27,7 +25,7 @@ internal static class Attribution
     internal const string ProjectURL = BrandingInfo.RepoURL;
     internal const string LicenseSPDX = "MIT";
 
-    // Copyright verification fingerprint. Do not remove. See LICENSE-MIT.md.
+    // Copyright verification fingerprint used in official ShackDesk builds.
     // UUID generated at project creation: f8a2c4e6-3b1d-4f9a-8e7c-5d2b0a6c1e4f
     private const string _fingerprint =
         "PortPane-ShackDesk-MCG-f8a2c4e6-3b1d-4f9a-8e7c-5d2b0a6c1e4f";

diff --git a/src/PortPane/BrandingInfo.cs b/src/PortPane/BrandingInfo.cs
@@ -64,9 +64,18 @@ public static int? DaysRemaining
     public const string AppURL            = "https://shackdesk.com";
     public const string SupportURL        = "https://github.com/Computer-Tsu/shackdesk-portpane/discussions";
     public const string DonationURL       = "";
-    public const string LicenseType       = "MIT / Commercial";
+    public const string LicenseType       = "MIT source code + optional paid services";
     public const string TelemetryEndpoint = "https://telemetry.shackdesk.com/report";
 
+    public static string RepoDocBranch => ChannelInfo.Channel switch
+    {
+        ReleaseChannel.Alpha  => "dev",
+        ReleaseChannel.Beta   => "beta",
+        _                     => "main"
+    };
+
+    public static string SourceLicenseURL => $"{RepoURL}/blob/{RepoDocBranch}/LICENSE-MIT.md";
+
     /// <summary>
     /// Per-channel update feed URL. Resolves at runtime based on ChannelInfo.Channel.
     /// Served by ShackDesk-Site as static JSON; updated automatically after each release.

diff --git a/src/PortPane/Data/usb_devices.json b/src/PortPane/Data/usb_devices.json
@@ -3,7 +3,7 @@
   "_comment_2": "  PortPane by ShackDesk — USB Device Database",
   "_comment_3": "  Project  : https://github.com/Computer-Tsu/shackdesk-portpane",
   "_comment_4": "  Author   : Mark McDow (N4TEK) — My Computer Guru LLC",
-  "_comment_5": "  License  : MIT / Commercial (see LICENSE-MIT.md)",
+  "_comment_5": "  License  : MIT source code (see LICENSE-MIT.md)",
   "_comment_6": "════════════════════════════════════════════════════════════════════════",
   "_comment_7": "",
   "_comment_8": "  PURPOSE",