Cowrie Research

boltz-primary-sources-2026-04-28

3 min read

Boltz primary-source snapshot

Fetched: 2026-04-28 UTC

1) Official site

Source: https://boltz.exchange/

Selected excerpt from the official site:

Boltz | Non-Custodial Bitcoin Bridge

Additional signals from the source:

  • Even though the homepage rendered sparsely in this pass, the title is still a strong first-party description of how Boltz wants to be understood.
  • The “Bitcoin bridge” framing is useful because Boltz is not just a generic exchange; it is focused on movement across Bitcoin layers.

2) Official backend README

Source: https://raw.githubusercontent.com/BoltzExchange/boltz-backend/master/README.md

Selected excerpts from the official repo:

This is the source of the official Boltz Backend powering swaps at boltz.exchange.

It enables non-custodial swaps between different Bitcoin layers.

Boltz Backend exposes a RESTful HTTP API that can be used to query information like supported pairs as well as to create and monitor swaps.

Additional signals from the source:

  • This is the clearest evidence that Boltz should be cataloged as infrastructure rather than only as a consumer-facing swap page.
  • The API language matters because it implies other apps and operator workflows can build on top of Boltz.

3) Official client README

Source: https://raw.githubusercontent.com/BoltzExchange/boltz-client/master/README.md

Selected excerpts from the official repo:

Boltz Client connects to CLN or LND nodes and allows for fully unattended channel rebalancing or accepting Lightning payments without running a node, using Boltz API.

Additional signals from the source:

  • This is the strongest short statement that Boltz also ships node middleware and operational tooling.
  • Accepting Lightning payments without running a node is a notable expansion beyond simple swaps.

4) Official client documentation

Source: https://client.docs.boltz.exchange/

Selected excerpts from the official docs:

Boltz Client connects to CLN or LND nodes and allows for fully unattended channel rebalancing or accepting Lightning payments without running a node, using Boltz API. It is composed of boltzcli and boltzd.

CLI-first: fine-grained control and enhanced setup UX via boltzcli

CLN-first: first-class citizen support for CLN in addition to LND

Liquid-first: leverages fee-efficient Lightning → Liquid swaps in addition to Bitcoin swaps

Self-contained: create/import Liquid and mainchain wallets, swap to read-only wallets

Additional signals from the source:

  • The design-principles section is unusually high-signal for classification because it defines the operator posture directly.
  • The Liquid-first framing makes Boltz especially relevant as Bitcoin-layer interoperability infrastructure rather than just Lightning tooling.
  • The docs also expose standalone operation, configuration for CLN/LND, and swap-mnemonic backup/recovery details, which round out the control-plane picture.

Notes

  • Boltz appears best cataloged as Bitcoin layer-bridging infrastructure / non-custodial swap backend / Lightning-Liquid node middleware.
  • No canonical standalone whitepaper or litepaper surfaced in this pass.
  • The production backend README and client docs are the strongest current primary sources for understanding what Boltz actually ships.

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