Walletconnectsharpv2 is a free, open source C#/.NET implementation of the WalletConnect V2 protocol, the standard that lets a crypto wallet link to a decentralized application (dapp) without handing over its keys. It is aimed at software developers who want to build wallet or dapp features on Windows and need both sides of the protocol in one codebase.
Before you start, know the project status. The last code update was on January 7, 2023, more than two years ago, so treat it as a reference implementation rather than an actively maintained product. Read the repository history and open issues, and plan extra testing before using it in anything that touches real funds. Most readers will find it most useful as a learning resource or a starting point for a prototype.
What Is WalletConnect V2 and How Does It Work?
WalletConnect is an open protocol that connects a crypto wallet to a web or desktop application, usually called a dapp. Instead of giving a dapp direct access to a wallet's private keys, the two sides establish a session. The dapp asks for specific actions, such as signing a message or approving a transaction, and the wallet shows each request to the user for approval.
Version 2 rebuilt how sessions and pairing are handled compared with the first version, which is why developers look for libraries that follow the newer specification. A pairing is the initial link between two parties, and a session is the ongoing set of permissions that follows it. Understanding these two ideas makes it much easier to read the code and debug connection issues.
For readers new to the topic, the key point is that approvals should always happen in the user's wallet. Any library in this category should keep signing decisions with the user, not hidden inside the application.
Who Is Walletconnectsharpv2 For?
This library suits developers and small engineering teams who write software in C# and want to add WalletConnect support without leaving the .NET ecosystem. Typical readers include people building a desktop wallet prototype, a trading tool that needs a mobile wallet to approve requests, or an internal dapp used for testing.
It is less suited to people who simply want to hold cryptocurrency. Someone who wants to send, receive and store coins will be better served by a finished wallet application, such as the ones listed in the related programs below. The library assumes you can read documentation, write code and handle errors when a connection drops or a request is rejected.
Teams working in other languages can still learn from the design, since the protocol stays the same regardless of implementation. If your stack is JavaScript or another ecosystem, however, a native library for that environment will probably be easier to maintain.
Real-World Use Cases for a .NET WalletConnect Library
A common scenario is a Windows desktop application that needs a user's mobile wallet to approve an action. The app creates a connection request, shows it as a QR code or link, and waits for the wallet to respond. The user confirms on their phone, and the desktop app receives the result without ever seeing the private key.
Another scenario is testing. A development team can run the wallet side and the dapp side on the same machine, send sample requests and check how the code handles rejected approvals, expired sessions and disconnects. This kind of local testing catches many problems early, before any real money is involved.
A third use is education. Students and hobbyists who want to understand wallet-to-dapp communication can step through the open source code, add logging and compare the messages with the protocol specification.
Key features
Wallet and Dapp Sides in One Library
Built on C#/.NET
Free and Open Source
How to install Walletconnectsharpv2 on Windows
- 1
Get the Software from the Official Source
Download only from the official website or the GitHub Releases page for the project. Avoid mirror sites, file-sharing links and forum posts, even if they look legitimate. If a ready-made Windows build or installer is offered on the release page, choose that; otherwise you will work from the source code.
- 2
Verify the File
Compare the SHA-256 checksum of the downloaded file with the value published alongside the release. If the release includes a digital signature, check that it is valid and issued to the expected publisher. Do not run a file whose checksum does not match.
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Install or Set Up the Library
Run the installer if one is provided, or extract the build to a folder you control. For use in your own project, follow the setup instructions in the repository documentation and add the library to your C#/.NET solution. Keep the files in a version-controlled folder so you can track changes.
How to use Walletconnectsharpv2
Using the library is a development task rather than a click-and-run process. The steps below outline a typical first session for a developer who wants to test both sides of a connection on one Windows computer.
- Read the README and the samples in the repository so you know which features are documented and which are experimental.
- Create a test .NET project in your preferred editor and reference the library.
- Set up the dapp side first by configuring the settings the documentation describes, then generate a pairing request.
- Start the wallet side in a second instance of the app and accept the pairing using a test account only.
- Send a harmless test request, such as a message to sign, and confirm that the response arrives correctly.
- Try rejecting a request and disconnecting, then check that both sides handle each state cleanly.
- Log every message during testing, then remove sensitive values before sharing logs.
Keep test keys separate from any wallet that holds real funds, and never reuse a seed phrase from a production wallet in a test project.
Pros & cons
- Free to use, with no cost to download or run
- Covers both the wallet and dapp sides of WalletConnect V2
- Written in C#/.NET, a natural fit for Windows developers
- Public source code that can be reviewed and tested
- Last code update was in January 2023, more than two years ago
- Aimed at developers, not a finished wallet for everyday users
- Requires C#/.NET experience to integrate and debug
- Long-term support is not guaranteed for an inactive project
Is Walletconnectsharpv2 safe?
Treat this library with the same caution as any software that handles wallet connections. Download it only from the official website or the project's GitHub repository, and verify the SHA-256 checksum or digital signature before you run or build anything. A mismatch means the file should not be used.
The project has not been updated since January 2023, which is more than two years ago. Unmaintained code can contain bugs or security issues that will never be fixed, so review the source code and its dependencies yourself before using it in a product.
Never enter a seed phrase on third-party websites, in a test app or in a chat with someone offering help. A library has no reason to ask for one. Use test accounts only when experimenting.
- Official source only. Download from github.com/dapperlabs/walletconnectsharpv2. Ignore ads and lookalike domains.
- Check the SHA-256. Compare the installer hash with the value the developer publishes before running it.
- Never share your seed phrase. No developer, support agent or website — including CryptApps — will ever ask for it.
Alternatives
Most programs in this catalog are finished applications for holding and managing cryptocurrency, such as Coinomi, Exodus and Atomic Wallet. Those products are designed for end users who want a ready interface, and they handle key storage themselves. Walletconnectsharpv2 is different: it is a C# implementation of a protocol, meant for developers who build their own software.
Frame and Trust Wallet are closer to the connection side of the story. Frame is a Web3 wallet for the desktop, and Trust Wallet on a PC is offered as a browser extension. If your goal is to link a dapp to a wallet from your own code, this library is the one to study. If your goal is simply to use a wallet, choose one of the applications instead.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- —
- Last update
- 7 Jan 2023
- Windows support
- Yes (Windows build or installer)
- Source code
- github.com/dapperlabs/walletconnectsharpv2
Frequently asked questions
Walletconnectsharpv2 is a free, open source C# implementation of the WalletConnect V2 protocol. It supports both the wallet side and the dapp side of a connection, so developers can build either role on the .NET platform. It is a developer library rather than a finished wallet app for everyday users.
It can be used safely if you get it from the official source and check it before running it. Use the project's website or GitHub repository, verify the SHA-256 checksum or signature, and never enter a seed phrase on third-party sites. The last code update was in January 2023, so review the code carefully before any production use.
Yes, Walletconnectsharpv2 is free and open source. You do not pay to download, test or modify its source code. Keep in mind that free software still needs to be checked for fit with your project, and your own development time is usually the largest cost.
Yes. The project supports Windows and is distributed as a Windows build or installer, alongside its source code. Because it is written in C#/.NET, it fits naturally into Windows desktop applications. Choose the release that matches your needs and verify the file before running it.
Not really. It is an implementation of a protocol meant for developers building wallets or dapps, not a finished app with an interface for everyday use. If you want to store and send cryptocurrency, use a complete wallet application and keep your seed phrase offline.
Not actively, based on the public record. The last code update was on January 7, 2023, which is more than two years ago. That does not make it unusable, but bugs may remain unfixed, so check the repository's commit history and open issues before relying on it.
Verdict
Walletconnectsharpv2 is a useful free resource for C#/.NET developers who want to understand or prototype both sides of a WalletConnect V2 connection on Windows. Its open source code is a practical reference for learning the protocol. It is not a wallet for everyday use, and its last update in January 2023 means it needs careful review before any real-world deployment. Before you start, check the latest version and activity on the official website or GitHub repository.