Submarine swaps

Submarine swaps are trust-minimized atomic swaps of offchain bitcoins for onchain bitcoins. A payment secured by an HTLC is routed over LN to a service provider who creates an onchain output paying the same HTLC. The onchain receiver can settle the HTLC to claim its funds, allowing the LN HTLCs to be settled like normal.

This topic description is a stub. We would welcome a pull request providing more background information about the topic.

Optech newsletter and website mentions

2023

• Proposal to extend BOLT11 invoices to allow requesting prepayment for submarine swaps

2020

• Electrum 4.0.1 adds support for submarine swaps

2019

• Lightning Loop adds support for user swap-ins
• Lightning Labs announces a new tool and service to facilitate submarine swaps

See also

• Splicing

  
  

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