What Is Spark Wallet?
Spark Wallet is an open-source Lightning Network wallet interface that provides a seamless user experience for managing Bitcoin over the Lightning Network. Developed to run on top of Core Lightning (CLN), it acts as a visual front-end that makes operating a Lightning node easier and more accessible.
It is particularly popular among:
- Advanced Bitcoin users
- Node operators
- Developers experimenting with Lightning-based apps
- Privacy-focused individuals
Spark Wallet runs in your browser or as a mobile app via Progressive Web App (PWA) technology, meaning no installation is necessary — you can add it directly to your home screen.
Key Features of Spark Wallet
1. Lightning-Fast Bitcoin Payments
Spark is designed for Lightning Network operations, enabling near-instant and low-fee Bitcoin transactions. This makes it ideal for microtransactions, tipping, and real-time payments.
2. Non-Custodial and Private
As a self-hosted wallet, Spark does not store your private keys or user data. You remain in full control of your funds and node.
3. Built on Core Lightning (CLN)
Spark is built to work directly with Core Lightning, one of the most efficient and lightweight implementations of the Lightning Network. This makes Spark Wallet a powerful tool for those running their own node.
4. Responsive Web Interface
Spark’s intuitive web-based UI can be accessed from desktop or mobile devices. It can also function as a PWA, offering a native-app-like experience without needing to install from an app store.
5. QR Code Support
Sending and receiving payments is made easy through QR code generation and scanning, simplifying transactions between mobile devices.
6. Multiple Account Management
Spark can support multiple accounts and wallets connected to the same node instance, making it useful for businesses or shared setups.
7. Security and Encryption
It supports encrypted connections (HTTPS/WSS) and requires authentication, keeping your Lightning node safe from unauthorized access.
8. Open Source and Auditable
Being fully open-source, Spark Wallet can be reviewed, modified, and self-hosted. The community can verify its code and improve its functionality through contributions.
How Spark Wallet Works
- Install Core Lightning (CLN) on your device or server.
- Install Spark as a front-end interface for your Lightning node.
- Access Spark Wallet via browser or install it as a PWA on your smartphone.
- Use the interface to:
- Open and close Lightning channels
- Send and receive Lightning payments
- Monitor your node’s performance and payment history
- Manage funds and invoices
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