Submarine Swaps

Moving Bitcoin between on-chain and Lightning seamlessly.

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What is a Submarine Swap?

A submarine swap allows you to exchange on-chain Bitcoin for Lightning Bitcoin (or vice versa) in a trustless manner using HTLCs.

Use Cases

  • Refill a Lightning channel without closing it
  • Move Lightning funds to on-chain for cold storage
  • Manage liquidity across both layers
← Nodes & Fees