Blockstream launches in-house atomic swap infrastructure for Lightning and Liquid networks following Boltz outage.
Tech & Launches ·
On August 3, 2026, Boltz announced it would disable its swap services indefinitely, citing a pattern of accelerating automated attacks and exploits against its infrastructure that its team could not patch as quickly as attackers could iterate. Although no user funds were at risk due to Boltz's self-custodial architecture, the incident prompted Blockstream to launch Blockstream Swaps, an in-house atomic swap infrastructure for Lightning and Liquid networks that was already in development.
Atomic swaps enable trustless peer-to-peer asset exchanges where both parties either complete the transaction in full or it fails and funds return to original owners. The technology relies on hashed time-locked contracts that bind both sides of a trade together using a shared secret and timeout mechanism. Submarine swaps move bitcoin between mainchain and Lightning, reverse submarine swaps go the opposite direction, and chain swaps handle trustless exchanges between BTC and Liquid bitcoin. Blockstream also developed LiquiDEX, a protocol for swapping Liquid assets in a single transaction without requiring a hash lock, which powers platforms including SideSwap.
Blockstream framed the launch as complementing rather than replacing existing swap providers. The timing underscores growing infrastructure pressures on smaller operators managing Layer 2 services, though the specific technical measures Blockstream Swaps implements to withstand the attack patterns that disabled Boltz remain unspecified.