$WCT WalletConnect is an open-source protocol that allows decentralized applications (dApps) to securely connect and interact with cryptocurrency wallets (like MetaMask, Trust Wallet, Rainbow, etc.) across different devices.

🔧 How It Works:

1. A dApp shows a QR code (on desktop) or a deep link (on mobile).

2. The user scans the QR code with their mobile wallet app (or clicks the deep link).

3. A secure connection is established between the dApp and the wallet.

4. Transactions can be signed and approved from the wallet app, without exposing private keys to the dApp.

🧠 Example Use Case:

You’re on a DeFi website on your desktop and want to swap tokens. Instead of logging in with a username/password:

• You scan the QR code using MetaMask Mobile.

• Your wallet connects to the website.

• You approve the transaction from your phone.

🔐 Security Note:

• Private keys never leave your wallet. The dApp only gets permission to request transactions, not access your funds directly.

• The connection is end-to-end encrypted.

🆕 WalletConnect v2 (latest version):

• Supports multi-chain connections (Ethereum, Solana, etc.).

• Improved session management and performance.

• More secure and scalable.