EigenWallet

Battle-tested Monero ↔ Bitcoin atomic-swap DEX wallet — non-custodial, GPL-3.0, Tor-aware, with a desktop GUI (Tauri) and a CLI/server pair for running your own market-making node. Formerly known as UnstoppableSwap, forked from the original `comit-network/xmr-btc-swap` reference implementation, eigenwallet has been live for ~3 years and ships under the `eigenwallet/core` repo. Listed at Grade B because the underlying atomic-swap protocol is the canonical no-third-party path between BTC and XMR — fully self-custodial, no operator on the data path, no account anywhere — but the operator surface is sparse (single-page landing on GitHub Pages with no separate /about, /privacy, or /terms page) and there is an active maker-side vulnerability advisory as of 2026-05-25 (see incident banner above).

What it is. EigenWallet is a desktop wallet + atomic-swap DEX in one binary. You hold BTC and XMR keys locally; when you want to swap, the wallet pairs you peer-to-peer with a market-maker running an ASB (Atomic Swap Backend) over Tor, executes the trustless cross-chain protocol on-chain, and settles directly between your wallets. There is no order book on eigenwallet's servers, no custody intermediate, no KYC layer, and no recoverable counterparty risk — if the maker disappears mid-swap, the protocol's refund timelocks return your funds. GUI ships for Linux / macOS / Windows; mobile is on the roadmap. The CLI + ASB are how a maker provides liquidity and earns a spread on every fill.

Background. Forked in 2023 from `comit-network/xmr-btc-swap` (the original Bitcoin ↔ Monero atomic-swap reference written by Coblox / CoinSwap researchers) and shipped as UnstoppableSwap by an independent maintainer team. Rebranded to eigenwallet in 2025 with an explicit founder statement; the rebrand kept the codebase, the Matrix room, and the maker community intact. ~118 releases shipped, 3,750+ commits, Rust + TypeScript stack. Funding came partly from Monero Community Crowdfunding (CCS) proposals for protocol-maturity work.

What you trust.

• Self-custody. Your seed never leaves your machine. The wallet uses standard `monero-wallet-rpc` and Bitcoin libraries; you can verify balances against your own monerod / Bitcoin Core if desired.
• GPL-3.0 source. Codebase at `github.com/eigenwallet/core` is fully auditable. Forkable under the GPL if the project ever stops being maintained.
• No account at any stage. Download binary → verify signatures → run. No eigenwallet account exists.
• Tor-integrated. Both the GUI and the ASB speak Tor natively; makers expose ASB onion services and takers connect via Tor by default. This is the only Bitcoin ↔ Monero direct swap path that's Tor-native end-to-end.
• No platform commission. Eigenwallet itself takes nothing per swap. The only spread is what each market-maker quotes; you can compare makers in-wallet and pick the tightest.
• Signed releases. Binaries published on GitHub Releases with maintainer signatures.

Operational specs.

• Install. Download from `eigenwallet.org/download` (Linux / macOS / Windows), verify the signature, run. Mobile is on the roadmap. Source build: `git clone github.com/eigenwallet/core && cargo build --release`.
• Coin coverage. Bitcoin ↔ Monero only. No other pairs supported — the protocol is BTC ↔ XMR-specific.
• Maker side (ASB). Separate CLI binary (`asb`) that takers connect to. Run on a VPS with Tor; takes funds from your BTC and XMR wallets, sets a spread, fills incoming requests. Currently advised to shut down — see incident.
• SEPA on-ramp. EU users can buy XMR via a SEPA fiat path linked from the landing page (EU only).
• Repositories. `github.com/eigenwallet/core` (main monorepo: swap binaries, GUI, libraries). `docs.eigenwallet.org` for user + maker documentation (work-in-progress).
• Community. Matrix room linked from the homepage; a separate `eigenwallet-makers` Matrix room coordinates ASB operators (this is where the 2026-05-25 vulnerability advisory was posted).
• Updates. Manual — pull a new release from GitHub, replace the binary, restart. Currently shipping ~weekly during active development.

Operator philosophy. The project framing on `eigenwallet.org` is uncompromising: *"Swap Bitcoin → Monero with protocol-guaranteed safety (no frozen funds, no fraud, no scams, no KYC ever)."* The rebrand statement on the GitHub org positions eigenwallet as a maintained continuation of the BTC ↔ XMR atomic-swap effort — distinct from the original `comit-network` repo (which is no longer actively maintained) and from the wider Haveno / Bisq P2P-trade lineage (which use different protocols and have had their own 2026 exploits — see the haveno + bisq incident entries). The team treats the ASB ecosystem as a first-class citizen rather than just shipping a taker GUI: every release tests maker workflows, and the maintainers actively coordinate operator-side communication via Matrix.

Grade rationale. Listed at Grade B rather than A because: (1) the operator surface is sparse — eigenwallet.org is a single GitHub Pages landing with no separate privacy policy, terms, or contact page; the documentation lives elsewhere (docs.eigenwallet.org, work-in-progress); (2) there is an active maker-side vulnerability advisory as of 2026-05-25; (3) reproducible builds are not yet documented (binaries are signed but build determinism is unverified). The grade ceiling here is held by operator transparency, not the protocol — the underlying atomic-swap mechanism is mathematically trustless and the codebase is GPL-auditable. If the maintainers ship a post-mortem + patched release + clean reproducible-build pipeline + a public privacy/contact page, this is an A candidate.

Useful when:

• You want to swap BTC → XMR (or XMR → BTC) without any intermediary ever holding your funds — no custodial exchange, no swap aggregator, no KYC.
• You're a Monero or Bitcoin holder who prefers on-chain settlement with cryptographic safety guarantees over the speed of a custodial swap.
• You run a VPS and want to earn a spread as a market-maker on the BTC ↔ XMR pair (currently advised to halt — see incident).
• You're operationally Tor-first and want the only end-to-end Tor-native BTC ↔ XMR atomic-swap stack.
• You're an EU user who wants a direct SEPA → XMR path inside a self-custodial wallet (no exchange account needed).
• You're researching atomic-swap protocols and want a production-grade Rust reference implementation to study.

Caveats:

• Active vulnerability advisory (2026-05-25). See incident banner. Don't run an ASB until a patched release ships. Taker-side use is technically possible but maker liquidity has thinned out — verify the maker you pair with is on a current build.
• Operator surface is sparse. Single-page landing on GitHub Pages, no separate privacy policy, terms, contact page, or AML statement. Documentation is split between the homepage, `docs.eigenwallet.org` (work-in-progress), and the GitHub README.
• Reproducible builds not documented. Binaries are signed but build determinism (per the standard Monero / Bitcoin Core Guix pattern) is not yet established. For high-threat-model use, build from source.
• BTC ↔ XMR only. No other pairs. If you need XMR → fiat or XMR → another altcoin, you'll need a separate path (see exchanges).
• Speed and minimum trade size depend on the maker. The protocol takes one BTC confirmation + XMR finality to settle; expect ~30-60 min end-to-end. Makers set their own minimums (typically 0.001+ BTC).
• Mobile not yet shipped. Roadmap item; for now this is a desktop-only experience.
• Project history. Forked + rebranded twice (comit-network → UnstoppableSwap → eigenwallet) — the codebase is the same lineage but the brand continuity is worth knowing if you're auditing historical commits.
• Single maintainer team. Like the broader xmr-btc-swap lineage, eigenwallet has a small (~5-10) active contributor base. If the team loses interest, the protocol still works (anyone can run the binaries) but feature development would slow.