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    <a class="brand" href="#"><span class="mark" aria-hidden="true"></span> SUPER TESTNET <span class="version">v0</span></a>
    <div class="header-actions"><span class="network"><i></i> PRIVATE LOCAL CHAIN</span><button id="theme-toggle" class="theme-toggle quiet" type="button" aria-label="Toggle color theme">☀ Light</button></div>
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    <section class="hero"><div><p class="eyebrow">BITCOIN, WITH ROOM TO EXPERIMENT</p><h1>Your own little<br>Bitcoin universe.</h1><p class="intro">Mine a block. Inscribe a thought. See it land in your wallet.<br>All in your browser, all with pretend money.</p></div><div class="orbit" aria-hidden="true"><div class="cube"><svg viewBox="0 0 100 100" width="82" height="82" fill="none" stroke="currentColor" stroke-width="5" aria-hidden="true"><path d="M35 17v12m12-12v12M35 76v12m12-12v12M24 29h25c22 0 22 23 0 23H24m0 0h28c22 0 22 24 0 24H24m7-47v47"/></svg></div><span>YOUR CHAIN. YOUR PACE.</span></div></section>
    <aside class="notice"><strong>Test coins only.</strong> This is a private simulation, not Bitcoin testnet or mainnet. Local-wallet keys stay in this browser, unencrypted. Inscriboor keys stay in the extension. Never load real keys or send real funds here.</aside>
    <div id="status" role="status" aria-live="polite">Choose Inscriboor or a local test wallet to start your first loop.</div>
    <section class="workspace">
      <article class="panel wallet"><div class="panel-title"><span class="step">01</span><h2>Your test wallet</h2><span id="wallet-state" class="tag">NOT CREATED</span></div>
        <div id="empty-wallet"><p>One wallet. A whole chain to play with.</p><button id="connect-inscriboor" class="primary">Get Inscriboor ↓</button> <button id="create-wallet" class="quiet">Use local test wallet</button><p id="inscriboor-status" class="muted">Looking for the extension…</p><details class="install-help"><summary>Install Inscriboor</summary><ol><li>Download and unzip Inscriboor.</li><li>Open <code>chrome://extensions</code> (or Brave extensions).</li><li>Turn on Developer mode.</li><li>Choose <strong>Load unpacked</strong> and select the unzipped <code>extension</code> folder.</li><li>Refresh this page. The button above will change from <strong>Get Inscriboor</strong> to <strong>Connect Inscriboor</strong>.</li></ol></details></div>
        <div id="active-wallet" hidden><p class="label">FAKE BTC BALANCE</p><div class="balance"><span id="balance">0</span><small>BTC</small></div><p id="reserved" class="muted"></p><label for="address">Local regtest-format address</label><input id="address" readonly><button id="export-wallet" class="quiet">↓ Save test wallet</button></div>
        <div class="wallet-footer"><label class="file-button" for="load-wallet">↑ Load test wallet or lab backup</label><input id="load-wallet" type="file" accept=".json,application/json"><p class="muted">Saved on this device. Local-wallet backups contain their test key; Inscriboor backups contain only a public descriptor. A lab backup also preserves the chain.</p></div>
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      <article class="panel"><div class="panel-title"><span class="step">02</span><h2>Make some blocks</h2></div><p>Skip the faucet queue. Every block gives you <strong>50 fake BTC</strong>, ready to use immediately.</p><div class="chain-stats"><div><span class="label">BLOCK HEIGHT</span><strong id="height">0</strong></div><div><span class="label">PENDING TXS</span><strong id="pending">0</strong></div></div><button id="mine" class="primary" disabled>Mine now <span>+</span></button><label for="miner-interval">Auto miner</label><select id="miner-interval"><option value="0">OFF</option><option value="10">10s</option><option value="30">30s</option><option value="60">60s</option></select><p id="miner-status" aria-live="polite">Auto mining OFF</p><p class="muted">Keep a lab tab open; browser throttling may delay blocks. Mining also confirms your pending inscriptions.</p></article>
      <article class="panel inscribe"><div class="panel-title"><span class="step">03</span><h2>Leave a little something</h2><span class="tag">INSCRIPTION LAB</span></div><label for="mime-type">Content type</label><select id="mime-type"></select><label for="body-file">Or upload a local file (16 KiB maximum)</label><input id="body-file" type="file"><label for="parent">Parent inscription (optional, immutable)</label><select id="parent"><option value="">No parent</option></select><label for="delegate">Delegate inscription ID (optional, future IDs allowed)</label><input id="delegate" placeholder="64 hex characters + i0"><label for="reinscribe">Reinscribe an owned sat (optional)</label><select id="reinscribe"><option value="">New sat</option></select><label for="pointer">Advanced pointer (zero-based output sat position)</label><input id="pointer" inputmode="numeric" placeholder="Default first sat"><button id="recursive-demo" class="quiet">Use recursive demo</button><p class="muted">Recursive HTML/SVG scripts use local fetch and ord.render(text) in an isolated worker; ord.id is the requested inscription. No DOM or network access.</p><label for="payload">What will you put on your chain?</label><textarea id="payload" placeholder="Hello, little Bitcoin universe…" rows="3" disabled></textarea><label for="metadata">JSON metadata (optional, independent of body)</label><textarea id="metadata" rows="3" placeholder='{"protocol":"my-experiment","note":"hello"}'></textarea><p id="metadata-count" class="muted">0 / 2048 CBOR bytes · ord tag 5 · JSON is authoring format only</p><label for="metaprotocol">Metaprotocol (optional, independent field)</label><input id="metaprotocol" placeholder="e.g. tea-v1 · ord tag 7"><p class="muted">Native ord metaprotocol identifier. Metadata and inscription data remain independent.</p><div class="compose-footer"><span id="byte-count" class="muted">0 / 16384 bytes</span><button id="review" disabled>Review inscription ↗</button></div>
        <div id="review-panel" hidden><h3>Review before signing</h3><div id="review-preview"></div><pre id="review-text"></pre><p id="review-parent"></p><pre id="review-metadata"></pre><p>Two transactions: commit + reveal. <strong>1,000 fake sats</strong> in fees; <strong>1,000 fake sats</strong> in a new wallet output. Any selected parent or reinscription output is also returned in full; reinscription appends to its existing sat stack.</p><p id="signing-note" class="muted">The next button asks your active signer to approve commit + reveal, then submits them to your private chain.</p><button id="sign" class="primary">Sign & inscribe</button> <button id="cancel-review" class="quiet">Cancel</button></div>
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    </section>
    <section class="collection-section"><div class="section-title"><div><p class="eyebrow">04 / THE THINGS YOU MADE</p><h2>Your inscriptions <span id="collection-count">0</span></h2></div><span class="muted">Owned by this wallet</span></div><div id="collectibles" class="collectibles"><p class="empty">Your first inscription belongs here.<br><span>Fund your wallet, write some text, and make it yours.</span></p></div></section>
    <section class="explorer-section">
      <div class="section-title"><div><p class="eyebrow">05 / FOLLOW THE TRAIL</p><h2>Chain explorer</h2></div><button id="export-lab" class="quiet">↓ Save complete lab</button></div>
      <div class="chain-board">
        <div class="mempool-head"><div><span class="chain-kicker">MEMPOOL</span><strong>Waiting for the next block</strong></div><span class="muted">commit + reveal transactions live here before mining</span></div>
        <div id="mempool-list" class="mempool-list"></div>
        <div class="chain-divider"><span>↓ mine</span></div>
        <div class="blocks-head"><span class="chain-kicker">BLOCKS</span><span class="muted">newest first · click any block to inspect it</span></div>
        <div id="blocks" class="blocks"></div>
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      <article id="inspector" class="panel inspector" hidden tabindex="-1"></article>
    </section>
    <section class="panel" id="indexes"><h2>Indexes</h2>
      <p>Metadata is data; indexers are interpretation. Native metaprotocol tag 7 is authoritative; metadata.protocol remains a compatibility fallback. Raw events remain uninterpreted.</p>
      <p id="index-stats"></p><label for="protocol">Discovered protocol names</label><select id="protocol"></select>
      <p id="protocol-stats"></p><h3>Ordered raw events</h3><p class="muted">Confirmed blocks in chain order, then mempool order.</p><div id="protocol-events"></div>
      <label for="reducer">Optional trusted local indexer</label><select id="reducer"><option value="">None</option><option value="event-counter">Example: event-counter</option></select>
      <h3>Derived state (separate from raw events)</h3><pre id="derived-state">No reducer selected.</pre>
    </section>
    <section class="panel" id="api-explorer"><h2>API explorer <span class="tag">LOCAL / IN-BROWSER</span></h2>
      <p>LocalOrdAPI reads this browser’s chain and indexes. These paths are not server URLs; the static host cannot access your lab.</p>
      <label for="api-preset">Preset path</label><select id="api-preset"></select>
      <label for="api-path">Local API path</label><input id="api-path" value="/r/blockheight">
      <button id="api-try">Try</button> <button id="api-copy" class="quiet">Copy response</button>
      <pre id="api-response" aria-live="polite">Choose a path and press Try.</pre>
    </section>
    <details class="about"><summary>Under the hood & attribution</summary><p>Real serialized Bitcoin transactions, Schnorr signatures and Taproot commit/reveal scripts, on a deliberately simplified local UTXO chain. No proof of work, Bitcoin consensus, peer network, public broadcast, or production custody. Synthetic local sats follow FIFO input-to-output ranges. Child creation and reinscription preserve the owned sat. Fees retire the input tail; this is not Bitcoin consensus.</p><p>Built from and inspired by <a href="https://github.com/supertestnet/testnet_generator">Supertestnet’s testnet_generator</a>, <a href="https://github.com/supertestnet/inscriptions-online">inscriptions-online</a>, and <a href="https://github.com/supertestnet/vanilla-js-browser-wallet">vanilla-js-browser-wallet</a>. <a href="https://github.com/supertestnet/node_faker">node_faker</a> was evaluated for future RPC compatibility.</p><p>Transaction library: <a href="https://github.com/cmdruid/tapscript">tapscript by Christopher Scott</a> (<a href="/licenses/tapscript.txt">CC-BY-1.0</a>). <a href="/licenses/supertestnet-CC0.txt">Supertestnet CC0 license</a> · <a href="/licenses/noble-curves.txt">noble-curves license</a> · <a href="/licenses/noble-hashes.txt">noble-hashes license</a>.</p></details>
    <footer><span>SMALL CHAIN. BIG POSSIBILITIES.</span><button id="reset" class="quiet danger">Reset local lab</button></footer>
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