Spark TLDR
Spark is a Bitcoin L2 that enables instant, extremely low fees, and unlimited self-custodial transactions of bitcoin and tokens while also enabling users to send and receive natively via Lightning. It’s open-source and secured by Bitcoin.
Key Features
We built Spark from first principles. It’s designed to deliver an exceptional payment UX that’s as trustless as possible while making sure we respect our core Bitcoin roots.
Instant payments
Send and receive BTC and other assets in under one second on Spark
Self-custodial
Maintain your sovereignty by owning your keys
Low Fees
Send funds fee-free on Spark, with minimal fees on the Lightning and Bitcoin
Lightning: send & receive
Native Lightning — no node, liquidity, or channel management.
Token Support
Mint, send, accept, and process tokens (e.g. stablecoins) on Bitcoin
1/n trust assumptions
Minimal trust — only one entity needs your trust. (minority/n)
Exit Freedom
Exit your Bitcoin unilaterally whenever you want—no permission required
High Performance
High throughput for all operations, scaling without limits