<title>Theseus Navigator — the browser that speaks Bitcoin Cash names — Sirius.X</title>
<metaname="description"content="Theseus Navigator is a Chromium-based browser with native Bitcoin Cash Domain Names resolution built in — no OS-level daemon, no DNS shim, no root-store install. Download for Windows.">
<!-- Theseus.X has its own compass-mark favicon and logo — reuse them here so
tabs on this subpage read as Theseus (compass), not Sirius (star), and
shared-link previews carry Theseus's own OG image. Copied from
silentmode.st/bns/theseus.x/assets/ to keep sirius.x self-contained. -->
<metaproperty="og:title"content="Theseus Navigator — the browser that speaks Bitcoin Cash names">
<metaproperty="og:description"content="Native .bch and BCNR name resolution built into a Chromium browser. No OS-level daemon, no root-store install. Download for Windows.">
<pclass="tag">A Chromium-based browser with native <b>Bitcoin Cash Domain Names</b> resolution built in.
No OS-level daemon, no DNS shim, no root-store install. Type <code>hello.bch</code> in the
address bar and it just works.</p>
<divclass="cta">
<aclass="btn acid"href="#download">Download for Windows</a>
<aclass="btn ghost"href="#how">How it works</a>
</div>
</header>
<divclass="wrap">
<sectionid="download">
<h2>Download</h2>
<pclass="lede">Theseus ships from its own site — <ahref="https://silentmode.st/bns/theseus.x/#download"rel="noopener"><b>theseus.x</b></a> — so the version and checksums you see are always the current build, not a snapshot cached here. Windows installer + portable, plus Ariadne Resolver (lighter, no-browser).</p>
<divclass="note"style="margin-top:1.4rem"><b>Why not list versions here?</b> Theseus updates weekly; a hardcoded version on this page went stale within days last time. theseus.x is the single source of truth — its own operator ships the current build, and Sirius.X links there instead of duplicating.</div>
</section>
<sectionid="how">
<h2>How Theseus works</h2>
<pclass="lede">Theseus is a Chromium wrapper (Electron) with two things regular browsers don't
have: in-process BCNR name resolution, and a certificate-verify hook that trusts on-chain
TLS fingerprints instead of the OS root store for BCNR hostnames.</p>
<olclass="steps">
<li><b>Address bar accepts <code>.bch</code> / <code>.x</code> / any BCNR TLD.</b>
<span>The URL parser is short-circuited: any hostname whose TLD is in the registry is
resolved by walking the chain via the built-in <code>bns.js</code> — never through DNS.</span></li>
<li><b>Records decide how the site is served.</b>
<span><code>h</code> renders inline HTML from the OP_RETURN payload itself. <code>s3</code>
serves from a Sia bucket via the in-app gateway. <code>ip</code> connects to a server by
IP. <code>u</code> redirects. Priority is handled by the shared <code>record-picker</code>.</span></li>
<li><b>TLS verifies against on-chain fingerprints.</b>
<span>Electron's <code>setCertificateVerifyProc</code> is intercepted: for BCNR hostnames,
instead of walking the OS trust chain, the leaf's SHA-256 fingerprint is compared to the
<code>tls</code> record on chain. Matches → trusted. No <code>tls</code> record → the
browser falls back to the local root CA.</span></li>
<li><b>Provenance indicator in the URL bar.</b>
<span>A tiny badge shows whether the page came from the chain, from Sia, or from an
IP-configured server — with the NFT category shown on hover. The decentralized padlock.</span></li>
</ol>
<divclass="note"><b>What Theseus is NOT.</b> Not a wallet — for that, use Deviant, Cashonize,
Paytaca, or the built-in browser wallet at
<ahref="../#search-input">the name search</a>.
Not a hosting service — for that, register a name and point its records at any host (Sia, VPS,
your own server). Theseus just makes those names openable in a normal-feeling browser.</div>
</section>
<sectionid="verify">
<h2>Verify a download</h2>
<pclass="lede">The binaries are unsigned (Windows will show a SmartScreen warning). Before
running, verify the SHA-256 against what the operator publishes on-chain — the current
hashes live on the theseus.x download page itself, alongside each release:</p>
<pre>PowerShell:
Get-FileHash <downloaded-file>.exe
Bash:
sha256sum <downloaded-file>.exe</pre>
<pclass="lede">Compare the digest to the hash panel on
