What is Wallet connect , for developers

Mahdi Tajik
4 min readNov 5, 2023

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Have you heard a lot about wallet connect in Web3 and DeFi recently? This article is a simple walk-through of what they are, their uses, and how they are used.

I previously wrote articles in Persian on my blog for specific technologies. I tried to share my knowledge and tips that may take other developers extra time to learn, and to help the community. Now, after a while, I’m back with an English version. I hope you like it! :)

Quick overview of DeFi

Decentralized finance in short DeFi is a new financial system that uses blockchain technology to eliminate the need for intermediaries like banks and other financial institutions. DeFi applications, or dApps, allow users to lend, borrow, trade, and invest assets without the need for a trusted third party.

Quick overview of Web3

Web3 is the next generation of the internet, which is built on blockchain technology. Web3 applications are decentralized, meaning that they are not controlled by any single entity. This makes them more secure and resistant to censorship. If you want to learn more about web3 please check here.

So basically web3 providing a great platform and feature for DeFis to be launched and with help of wallet connect, connection will be handled!

What is wallet connect

The communications protocol for web3, WalletConnect brings the ecosystem together by enabling wallets and apps to securely connect and interact.

WalletConnect is an open-source protocol that allows users to connect their self-custody crypto wallets to decentralized applications (dApps). It works on both mobile and desktop devices, and is becoming one of the main standards for accessing Ethereum dApps.

Why is WalletConnect important?

WalletConnect is important because it makes it easy and secure for users to interact with dApps. It also allows developers to integrate their dApps with a wide range of wallets, without having to develop custom integrations for each one.

Here are some of the benefits of using WalletConnect:

  • Security: WalletConnect uses encrypted connections and push notifications to ensure that users’ private keys remain secure.
  • Privacy: WalletConnect does not share any user data with dApps.
  • Choice: WalletConnect is supported by a wide range of wallets, so users can choose the one that best suits their needs.
  • Convenience: WalletConnect makes it easy to connect to dApps from both mobile and desktop devices.

How does WalletConnect work?

For connecting to a dApp using WalletConnect, users simply need to scan a QR code with their mobile wallet. Once connected, the user will be able to interact with the dApp as if it were running on their own device. You can find this feature on lots of wallet apps today.

WalletConnect uses a shared key to establish an encrypted connection between the wallet and the dApp. This key is generated when the user scans the QR code. Once the connection is established, the wallet and dApp can communicate securely with each other. After connection stabilished, lots of events and request can handled from dApp to clinet or viceversa throught wallet connect that I ’ll describe it more detailed in other article.

WalletConnect also supports push notifications. This allows dApps to send notifications to users, even when they are not actively interacting with the dApp. This can be useful for things like transaction confirmations and alerts. Basically wallet connect uses observe design pattern to handle events thought it’s library.

Use cases for WalletConnect

WalletConnect can be used for a variety of purposes, including:

  • Access dApps from mobile devices: WalletConnect allows users to access dApps from their mobile devices, let say you already have some wallets on some apps like Bitcoin.com wallet or Trust wallet and you want to connect Verse dex to swap from token Ethereum to Verse. In this case for connecting Verse dApp to your wallet and select a wallet to interact with you can easily use wallet connect QR code and done!
  • Use multiple wallets with a single dApp: WalletConnect allows users to use multiple wallets with a single dApp. This is useful for users who want to keep their different wallets separate.
  • Wrapper and helper for handling secure connection and events between wallet and dApps for developers.

Overall, WalletConnect is a powerful tool that makes it easy and secure for users to interact with dApps. It is supported by a wide range of wallets and dApps, making it a versatile solution for both users and developers.

In the past two years, I’ve been working with WalletConnect from older versions to now, and I want to write more about tips and best practices for implementing and using it in your project. More to come soon, so stay tuned!

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Mahdi Tajik

Senior Android developer | Project Manager | Blockchain enthusiast