feat: updated signature vertification and copyright in README

README.md

@@ -5,12 +5,16 @@
 ## Summary
 
 Session integrates directly with [Oxen Service Nodes](https://docs.oxen.io/about-the-oxen-blockchain/oxen-service-nodes), which are a set of distributed, decentralized and Sybil resistant nodes. Service Nodes act as servers which store messages offline, and a set of nodes which allow for onion routing functionality obfuscating users IP Addresses. For a full understanding of how Session works, read the [Session Whitepaper](https://getsession.org/whitepaper).
-<br/><br/>
-![DesktopSession](https://i.imgur.com/ydVhH00.png)
+
+<br/>
+<br/>
+<img src="https://i.imgur.com/ydVhH00.png" alt="Screenshot of Session Desktop" />
 
 ## Want to Contribute? Found a Bug or Have a feature request?
 
-Please search for any [existing issues](https://github.com/session-foundation/session-desktop/issues) that describe your bug in order to avoid duplicate submissions. <br><br>Submissions can be made by making a pull request to our development branch.If you don't know where to start contributing please read [Contributing.md](CONTRIBUTING.md) and refer to issues tagged with the [Good-first-issue](https://github.com/session-foundation/session-desktop/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22) tag.
+Please search for any [existing issues](https://github.com/session-foundation/session-desktop/issues) that describe your bug in order to avoid duplicate submissions.
+
+Submissions can be made by making a pull request to our development branch.If you don't know where to start contributing please read [Contributing.md](CONTRIBUTING.md) and refer to issues tagged with the [good-first-issue](https://github.com/session-foundation/session-desktop/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22) tag.
 
 ## Supported platforms
 
@@ -22,47 +26,101 @@ Build instructions can be found in [Contributing.md](CONTRIBUTING.md).
 
 ## Verifying signatures
 
-Get Kee's key and import it:
+**Step 1:**
 
+Add Jason's GPG key. Jason Rhinelander, a member of the [Session Technology Foundation](https://session.foundation/) and is the current signer for all Session Desktop releases. His GPG key can be found on his GitHub and other sources.
+
+```shell
+wget https://github.com/jagerman.gpg
+gpg --import jagerman.gpg
 ```
-wget https://raw.githubusercontent.com/oxen-io/oxen-core/dev/utils/gpg_keys/KeeJef.asc
-gpg --import KeeJef.asc
+
+**Step 2:**
+
+Get the signed hashes for this release. `SESSION_VERSION` needs to be updated for the release you want to verify.
+
+```shell
+export SESSION_VERSION=1.15.0
+wget https://github.com/session-foundation/session-desktop/releases/download/v$SESSION_VERSION/signature.asc
 ```
 
-Get the signed hash for this release, the SESSION_VERSION needs to be updated for the release you want to verify
+**Step 3:**
 
+Verify the signature of the hashes of the files.
+
+```shell
+gpg --verify signature.asc 2>&1 |grep "Good signature from"
 ```
-export SESSION_VERSION=1.15.0
-wget https://github.com/session-foundation/session-desktop/releases/download/v$SESSION_VERSION/signatures.asc
+
+The command above should print "`Good signature from "Jason Rhinelander...`". If it does, the hashes are valid but we still have to make the sure the signed hashes match the downloaded files.
+
+**Step 4:**
+
+Make sure the two commands below return the same hash for the file you are checking. If they do, file is valid.
+
+<details>
+<summary>Linux</summary>
+
+```shell
+sha256sum session-desktop-linux-amd64-$SESSION_VERSION.deb
+grep .deb signature.asc
 ```
 
-Verify the signature of the hashes of the files
+</details>
+
+<details>
+<summary>macOS</summary>
 
+**Apple Silicon**
+
+```shell
+sha256sum releases/session-desktop-mac-arm64-$SESSION_VERSION.dmg
+grep .dmg signature.asc
 ```
-gpg --verify signatures.asc 2>&1 |grep "Good signature from"
+
+**Intel**
+
+```shell
+sha256sum releases/session-desktop-mac-x64-$SESSION_VERSION.dmg
+grep .dmg signature.asc
 ```
 
-The command above should print "`Good signature from "Kee Jefferys...`"
-If it does, the hashes are valid but we still have to make the sure the signed hashes matches the downloaded files.
+</details>
+
+<details>
+<summary>Windows</summary>
 
-Make sure the two commands below returns the same hash.
-If they do, files are valid
+**Powershell**
 
+```PowerShell
+Get-FileHash -Algorithm SHA256 session-desktop-win-x64-$SESSION_VERSION.exe  # checksum is uppercase but should otherwise match
+Select-String -Pattern ".exe" signature.asc
 ```
-sha256sum session-desktop-linux-amd64-$SESSION_VERSION.deb
-grep .deb signatures.asc
+
+**Bash**
+
+```shell
+sha256sum session-desktop-win-x64-$SESSION_VERSION.exe
+grep .exe signature.asc
 ```
 
+</details>
+
 ## Debian repository
 
-Please visit https://deb.oxen.io/<br/>
+Please visit https://deb.oxen.io/
 
 ## License
 
-Copyright 2011 Whisper Systems<br/>
-Copyright 2013-2017 Open Whisper Systems<br/>
-Copyright 2019-2023 The Oxen Project<br/>
-Licensed under the GPLv3: https://www.gnu.org/licenses/gpl-3.0.html<br/>
+Copyright 2011 Whisper Systems
+
+Copyright 2013-2017 Open Whisper Systems
+
+Copyright 2019-2024 The Oxen Project
+
+Copyright 2024-2025 Session Technology Foundation
+
+Licensed under the GPLv3: https://www.gnu.org/licenses/gpl-3.0.html
 
 ## Attributions