Nostr Wallet ID is a Chrome extension designed to enhance interoperability between various cryptocurrency wallets and the Nostr ecosystem. It injects a Nostr-compatible NIP-07 interface, allowing users to easily interact with Nostr applications using their preferred wallets, such as MetaMask and Phantom, across multiple blockchains including Ethereum, Solana, and Bitcoin.

The extension prioritizes user privacy by generating a unique Nostr identity derived from the wallet's signature, ensuring wallet private keys remain secure. With a user-friendly sidebar interface, it facilitates the management of wallet providers and offers security features for handling Nostr public and secret keys. Nostr Wallet ID supports a wide range of Nostr-based websites and applications, simplifying the user experience by bridging the gap between cryptocurrency wallets and Nostr applications.