Ask/Knowledge Atlas/Submarine swaps
Lightning · Maintained 2026

Submarine swaps

Submarine swaps use linked hashlocked conditions to exchange value between on-chain Bitcoin and Lightning, enabling liquidity movement while reducing the need to trust one counterparty to complete both settlement legs.

Context

Why it matters

Submarine swaps use linked hashlocked conditions to exchange value between on-chain Bitcoin and Lightning, enabling liquidity movement while reducing the need to trust one counterparty to complete both settlement legs.

Canonical knowledge

What California Bitcoin maintains

  • Submarine swaps use linked hashlocked conditions to exchange value between on-chain Bitcoin and Lightning, enabling liquidity movement while reducing the need to trust one counterparty to complete both settlement legs.

Primary and technical sources

Evidence before assertion
The Bitcoin Lightning Network

Joseph Poon and Thaddeus Dryja

Tier 1 · primaryBitcoin Optech

Bitcoin Optech

Tier — · technical

Related concepts

Continue through the knowledge graph
Lightning NetworkHTLCsOn-chain versus Lightning
Machine accessAgent-ready
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