Blockstream has announced that its trustless service for moving Bitcoin across the main chain, the Lightning Network and the Liquid sidechain has entered the beta testing phase. Those layers exist to move BTC faster and more cheaply than the base chain allows, but funds locked on one layer are not directly usable on the others, which is why swap services act as the bridges between them.

The Blockstream Swaps service arrives about one week after Boltz shut down its own swap service, citing headaches from waves of AI attacks, and was positioned as the solution to the Boltz-shaped hole that appeared in the Bitcoin ecosystem. In its August 17 announcement, also shared in a post on X, the company directed interested users to request access. Blockstream has not committed to a date for a general rollout, and Boltz, for its part, has given no timeline for a return.

Blockstream did not replace Boltz

An atomic swap is a trade where two parties exchange assets without any intermediary holding either side. The trade either clears in full or collapses, and both parties keep what they started with.

Blockstream's atomic swap version runs on the same primitive as Boltz's, leaning on hashed time-locked contracts, in which each side locks funds that can be claimed only with a shared cryptographic secret and refunded by expiry timers if the trade stalls. However, Blockstream — led by Adam Back, whose Hashcash proof-of-work design is cited in the Bitcoin whitepaper — went out of its way to clarify that it is "not seeking to replace any providers." Rather, Blockstream Swaps was presented as "a much-needed addition to improve redundancy and resilience to the ecosystem."

The firm added that it was already developing Swaps before Boltz indefinitely suspended its own service. It admitted, however, that the news triggered some sense of urgency within.

Blockstream Swaps closes the triangle between all three Bitcoin layers after adding mainchain Bitcoin to the Lightning-Liquid atomic swaps it shipped in December 2025. Blockstream already builds and maintains Liquid itself, the federated sidechain whose LBTC is a Bitcoin-pegged asset, and also develops Core Lightning, one of the three major Lightning node implementations, giving it infrastructure on every layer the new service connects.

Why did Boltz shut down?

As Cryptopolitan reported in early August, Boltz blamed the indefinite suspension of its swap service on waves of AI-assisted breaches probing its systems with growing regularity. As Blockstream also recalled in its own announcement, Boltz wrote that "attackers now iterate faster than a team our size can find and patch."

Throughout the rounds of exploits it endured, Boltz never lost any customer coins, because it never held them in the first place. Contagion from the shutdown spread to wallets built on top of Boltz, including Bull Bitcoin and Aqua Wallet.

A cluster of Lightning outages, not a network failure

Boltz was not an isolated case. ZEUS pulled its infrastructure offline on August 5 after a contained security incident, the third prominent Lightning operator to suspend services inside roughly 72 hours.

That timing rattled users, but the data points at the operators rather than the protocol. Analytics firm Amboss reported that during the week of the Boltz, Aqua and ZEUS disruptions, Lightning's public capacity actually rose by 28 BTC, and public channels grew by 256.

The backdrop is an industry-wide arms race. As Cryptopolitan has reported, a16z crypto found that an off-the-shelf AI agent's success at exploiting known vulnerabilities jumped from 10% to 70% once it was handed structured attack knowledge, and more than 40 Bitcoin firms have since asked frontier AI labs for vetted defender access to the same models attackers already use.