Getting Started
FAQ
Is Spark live?
Yes. Spark’s beta mainnet is now live. Developers can start building and transacting on the network. While this is a beta release, core functionality like sending and receiving Bitcoin, supporting tokens (e.g. stablecoins), and Lightning interoperability is fully operational. That said, Spark is still highly experimental. Expect bugs, rapid iteration, and breaking changes as we continue to scale the network.How is Spark native to Bitcoin?
The Bitcoin you hold on Spark is the same Bitcoin you hold on Bitcoin. It’s not wrapped or custodied in a multisig by a set of signers. On Spark, you can unilaterally exit your funds back to L1 at any time by broadcasting your pre-signed transaction to a Bitcoin node.What are the fees like?
For Bitcoin payments
Other asset payments (e.g. stablecoins)
| Transaction Type | Fee structure |
|---|---|
| L1 to Spark | On-chain fee paid by the user |
| Spark to Spark | Free. Small flat fee coming in 6-12 months |
| Spark to Lightning | 0.25% + routing fee |
| Lightning to Spark | 0.15% |
| Exit to L1 | L1 broadcast fee x 2 |
| Unilateral Exit | On-chain fee paid by the user |
| Transaction Type | Fee structure |
|---|---|
| L1 to Spark | On-chain fee paid by the user |
| Spark to Spark | Free. Small flat fee coming in 6-12 months |
| Unilateral Exit | On-chain fee + bond locked by user |
Some of the fees are sourced directly from the Lightspark SSP, specifically for Spark–Lightning interactions and exits back to L1. Lightspark is the first SSP on Spark, but the system is open. Anyone can run an SSP (SSP specs coming soon). If you’re an SSP, reach out, and we’ll include your fee structure.
How many Spark Operators (SOs) are there, and who are they?
At launch, Spark is supported by a small set of two Spark Operators (SOs): Lightspark and Flashnet. We’ve intentionally kept the set small to simplify debugging and testing during the early phase. More operators will be added soon as we scale.Should I expect some limits?
Spark is still very early. Please treat everything as a beta environment, things might not always work as expected. With that in mind, limits may be applied. Our first priority is making sure everything stays secure.What happens if Spark operators go offline?
You can always exit to Bitcoin L1 using your pre-signed exit transaction. If all operators go offline, you won’t be able to make new Spark transfers until operators are back online, but your funds remain in your custody and are redeemable to Bitcoin L1 at any time.
What are the SSPs present?
Lightspark is running the first SSP on Spark. Anyone can become an SSP. Our goal is to maximize the diversity of SSPs to make the network more competitive and redundant.
Does Spark have a token or a planned airdrop?
Spark does not have a token. Spark has not announced plans for any airdrop or token generation event. Be wary of scams claiming airdrops, giveaways, etc.If in doubt, refer to official Spark communication channels:
Web: https://spark.money
Twitter: @spark
Does Spark support smart contracts?
No, Spark does not support smart contracts.
Is Spark open source?
Yes, Spark is open source. You can read the code or contribute directly here.Does Spark require KYC / KYB?
No. Spark is an open protocol that provides infrastructure for moving Bitcoin and tokens (e.g. stablecoins). Like Bitcoin, it does not impose any KYC requirements at the protocol level.
How can I get in touch with the Spark team?
DM us at @spark or reach out directly through our website. We’ll set up a dedicated channel between your team and our engineering and product teams.