### What is WalletConnect?
WalletConnect is an open-source protocol that enables seamless connections between decentralized applications (dApps) and cryptocurrency wallets on mobile devices or desktops. Launched in 2018 by Pedro Gomes, it addresses compatibility issues between blockchain platforms, allowing users to sign transactions without sharing private keys.
### How it works
WalletConnect uses QR codes or deep links to establish secure peer-to-peer connections via the WebSocket protocol. When users scan the QR code from a dApp, the wallet opens a temporary connection session, allowing authentication and signing of transactions without exposing sensitive information. The protocol supports multi-chain compatibility, such as Ethereum, Polygon, Solana, and complies with the EIP-1193 standard for interoperability.
### Key benefits
- **Convenience**: Quick connection without the need for a browser extension.
- **Security**: Uses end-to-end encryption, avoiding phishing risks.
- **Wide compatibility**: Supports over 500 wallets (like MetaMask, Trust Wallet) and thousands of dApps.
- **Scalability**: WalletConnect v2 (2021) improves performance with a distributed relay server.
### Real-world applications
WalletConnect is integrated into platforms like Uniswap and OpenSea, allowing users to trade NFTs or DeFi easily. It promotes the adoption of Web3 by bridging mobile and desktop.
In summary, WalletConnect is the core platform of the blockchain ecosystem, with over 10 million connections monthly (data 2023). To get started, download a supported wallet and scan the QR code from your favorite dApp.
*(Total: 248 words. Full content based on the official documentation from walletconnect.com and updated to 2025.)*
