Spark is Live
After years of building on Bitcoin and Lightning, Spark launches as a high-speed settlement stack for developers.
Apr 29, 2025
Spark is live. What started as an experiment within Lightspark offices evolved into the thing we couldn't stop thinking about. This is a breakthrough after years of building on Bitcoin and Lightning.
What is Spark?
Spark functions as a high-speed settlement stack for Bitcoin, enabling developers to move Bitcoin and native assets like stablecoins instantly and at near-zero cost, without bridges or wrapped assets.
Developer SDKs
The platform ships two SDKs designed to simplify development:
- Wallet SDK for building Bitcoin-native wallets quickly
- Issuer SDK for minting and managing Bitcoin-native assets
Key Capabilities
- Facilitate instant asset transfers at minimal cost
- Create self-custodial applications with rapid user onboarding
- Maintain native Bitcoin and Lightning interoperability
- Issue Bitcoin-native assets for various purposes
- Enable new use cases including swaps, lending, and rewards programs
What's Next
This is a beta release. We acknowledge there are rough edges and known limitations. We invite developers to explore the documentation and provide feedback as we rapidly iterate on the platform.