op-return/404.html at main · bitcoinuniverseio/op-return · GitHub

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<!doctype html>
<html lang="en">
<head>
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<title>Page not found on the OP_RETURN documentation</title>
<meta name="description" content="That page does not exist on the OP_RETURN documentation site. Here is where everything lives.">
<meta name="robots" content="noindex">
<link rel="canonical" href="https://bitcoinuniverseio.github.io/op-return/404.html">
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<body>
<a class="skip" href="#main">Skip to content</a>

<header class="masthead">
  <div class="wrap masthead-inner">
    <a class="mark" href="/op-return/"><span class="glyph" aria-hidden="true">6a</span><span>OP_RETURN</span></a>
    <div class="toolbar">
      <div class="search">
        <label class="vh" for="site-search">Search this site</label>
        <input id="site-search" type="search" placeholder="Search, or press /" autocomplete="off" spellcheck="false" data-base="/op-return/">
        <ul id="search-results" class="results"></ul>
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      <button id="theme-toggle" class="themebtn" type="button" hidden>theme</button>
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    <nav class="sitenav" aria-label="Main">
      <a href="/op-return/">Home</a>
      <a href="/op-return/carrier.html">Carrier</a>
      <a href="/op-return/spec.html">Specification</a>
      <a href="/op-return/guide.html">Guide</a>
      <a href="/op-return/reference.html">Reference</a>
      <a href="/op-return/vectors.html">Test vectors</a>
      <a href="/op-return/decoder.html">Decoder</a>
      <a href="/op-return/changelog.html">Changelog</a>
    </nav>
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</header>

<main id="main">
<div class="channel">
  <div class="wrap">
    <p class="eyebrow">404 / no such page</p>
    <h1>Nothing at that address.</h1>
    <p class="lede">The link is wrong, or the page moved during the 1.0.0 rebuild. Everything this site holds is listed below.</p>
  </div>
</div>

<section>
  <div class="wrap">
    <h2 id="where">Where things are</h2>
    <div class="grid">
      <article class="card">
        <h3><a href="/op-return/carrier.html">Carrier</a></h3>
        <p>How OP_RETURN works: unspendable, prunable, relay limits, and how it compares with witness envelopes and unprunable outputs.</p>
      </article>
      <article class="card">
        <h3><a href="/op-return/spec.html">Specification</a></h3>
        <p>Numbered rules. R-CAR for the carrier, R-20 for OP-20, R-NAME for OP Names, R-OPI for OP Inscriptions.</p>
      </article>
      <article class="card">
        <h3><a href="/op-return/guide.html">Guide</a></h3>
        <p>Worked transaction examples and the verified support matrix.</p>
      </article>
      <article class="card">
        <h3><a href="/op-return/reference.html">Reference</a></h3>
        <p>Confirmation, mempool and reorg semantics, security, limitations, implementation checklist.</p>
      </article>
      <article class="card">
        <h3><a href="/op-return/vectors.html">Test vectors</a></h3>
        <p>Real script hex with the outcome each parser produced.</p>
      </article>
      <article class="card">
        <h3><a href="/op-return/decoder.html">Decoder</a></h3>
        <p>Paste a scriptPubKey and see which protocol claims it.</p>
      </article>
    </div>

    <h3>Moved during the rebuild</h3>
    <ul class="lead-col">
      <li>The old "Discover" page became the <a href="/op-return/reference.html">reference</a> and the <a href="/op-return/carrier.html">carrier</a> pages.</li>
      <li>The old "Get started" page became the <a href="/op-return/guide.html">guide</a>.</li>
    </ul>
    <p class="lead-col">If a link on another site brought you here, please <a href="https://github.com/bitcoinuniverseio/op-return/issues/new">open an issue</a> with the URL you followed.</p>
  </div>
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    <div class="meta">
      <div><b>Owning repository</b> <span>bitcoinuniverseio/op-return</span></div>
      <div><b>Source path</b> <span>/404.html</span></div>
      <div><b>Document version</b> <span>1.0.0</span></div>
      <div><b>Lifecycle</b> <span>experimental</span></div>
      <div><b>Chain and network</b> <span>bitcoin, mainnet</span></div>
      <div><b>Last verified</b> <span>2026-09-01</span></div>
    </div>
    <p class="links">
      <a href="https://github.com/bitcoinuniverseio/op-return">Repository</a>
      <a href="https://docs.bitcoinuniverse.io">docs.bitcoinuniverse.io</a>
      <a href="https://github.com/bitcoinuniverseio/op-return/blob/main/SECURITY.md">Report a vulnerability</a>
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