diff --git a/index.php b/index.php
new file mode 100644
index 0000000..8075803
--- /dev/null
+++ b/index.php
@@ -0,0 +1,265 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <title>FediBlock</title>
+    <meta charset="utf-8">
+    <meta name="robots" content="noindex, nofollow">
+    <style>
+      body
+      {
+        max-width: 100ch;
+      }
+      p
+      {
+        text-indent: 2ch;
+        margin: 0 auto;
+        text-align: justify;
+      }
+      label
+      {
+        display: block;
+        float: left;
+        width: 12ch;
+        text-align: right;
+        margin-right: 1ch;
+      }
+      input[type=text], input[type=url]
+      {
+        width: 60ch;
+      }
+      input[type=button]
+      {
+        padding: 0;
+      }
+      input[type=file]
+      {
+        margin-left: 10ch;
+      }
+      span.hint
+      {
+        font-style: italic;
+      }
+      p.footer
+      {
+        text-align: right;
+      }
+      table
+      {
+        width: 80%;
+        margin: auto auto;
+      }
+      table caption, table tr:first-of-type td
+      {
+        border-bottom: 1px solid;
+      }
+      table td:first-of-type
+      {
+        border-right: 1px solid;
+      }
+    </style>
+    <link rel="alternate" type="application/rss+xml" title="The newest FediBlock entries. All tags."
+      href="/rss">
+  </head>
+  <body>
+    <h1>FediBlock</h1>
+
+    <p>
+      <a href="https://fediblock.org/">FediBlock.org</a> ·
+      <a href="http://mzz6cduobh3oemtlou2sssbr4wteglmcabq5exrln3v7puwegfn4qqyd.onion/">
+        Onion service</a> (Tor)
+    </p>
+
+    <h2 id="what">What is this?</h2>
+
+    <p>
+      We aim to build a comprehensive list of #FediBlock posts in order to provide it to –
+      especially new – instance admins.
+    </p>
+
+    <p>
+      The idea of this project is to provide a list of bad actor instances in the Fediverse, in
+      order to enable instance admins to keep their instances clean of those actors without having
+      to go through endless and incomplete pages of #FediBlock posts.
+    </p>
+
+    <p>
+      Everyone can submit instances they suggest to block and provide receipts and reasoning.
+      Instance admins can subscribe to updates and decide for themselves whether they want to block
+      that instance or not. Those subscriptions can be limited to specific reasons (enables racism,
+      “free speech champions”, homomisia, no moderation, etc) or for all block suggestions.
+    </p>
+
+    <p>
+      The intention is to provide safe spaces in the Fediverse. The blocking suggestions should have
+      reasons like the above mentioned. If you want to suggest something like “The admin is blocking
+      my instance just because I used the n-word”, this is no place for you and your suggestion
+      might be deleted.
+    </p>
+
+    <p>
+      We recognize the work that others put into the #FediBlock hashtag. This is supposed to be an
+      archive or extension.
+    </p>
+
+    <h3>What are the advantages over the #FediBlock hashtag?</h3>
+
+    <ul>
+      <li>A list of all instances at a glance. Great for pointing admins of new instances to.</li>
+      <li>You get all block recommendations, not just the ones that federate to your instance.</li>
+      <li>Every recommendation has at least one receipt attached.</li>
+      <li>Entries are editable (with a git pull-request).</li>
+      <li>
+        Subscribe to the RSS feed to get all new recommendations or subscribe only to specific tags.
+      </li>
+    </ul>
+
+    <h2 id="list">Blocklist</h2>
+
+    <ul>
+      <li>Look at <a href="/blocklist/">all block recommendations in one page</a>.</li>
+      <li>
+        <a href="/rss">Subscribe to all new recommendations via RSS</a>, or<br>
+        <form method="get" action="/rss">
+          <label for="tags_rss" style="width: auto;">subscribe only to these tags:</label>
+          <input type="text" id="tags_rss" name="tags[]" placeholder="tag1,tag2,tag3"
+            style="width: 42ch;">
+          <input type="submit">
+        </form>
+      </li>
+    </ul>
+
+    <h2 id="api">API</h2>
+
+    <p><a href="/api/v1/list">/api/v1/list</a> returns an array of objects with these properties:</p>
+
+    <table>
+      <caption>Properties</caption>
+      <tr>
+        <td id="list_property">Property (type)</td>
+        <td id="list_description">Description</td>
+      </tr>
+      <tr>
+        <td headers="list_property">instance (string)</td>
+        <td headers="list_description">The hostname of the instance.</td>
+      </tr>
+      <tr>
+        <td headers="list_property">url (string)</td>
+        <td headers="list_description">The location of the full data set.</td>
+      </tr>
+    </table>
+
+    <p>The full data set is an object with these properties:</p>
+
+    <table>
+      <caption>Properties</caption>
+      <tr>
+        <td id="data_property">Property (type)</td>
+        <td id="data_description">Description</td>
+      </tr>
+      <tr>
+        <td headers="data_property">description (string)</td>
+        <td headers="data_description">The reasons the instance is listed. Can be long. Not sanitized.</td>
+      </tr>
+      <tr>
+        <td headers="data_property">instance (string)</td>
+        <td headers="data_description">The hostname of the instance. Can be more than one, separated by comma.</td>
+      </tr>
+      <tr>
+        <td headers="data_property">receipts (array of strings)</td>
+        <td headers="data_description">URLs to prove the claims made in the description and tags.</td>
+      </tr>
+      <tr>
+        <td headers="data_property">report_time (string)</td>
+        <td headers="data_description">Date and time of reporting, UTC. Format:
+          <a href="https://man7.org/linux/man-pages/man3/strftime.3.html">%Y-%m-%dT%H:%M:%S</a>.</td>
+      </tr>
+      <tr>
+        <td headers="data_property">screenshots (array of strings)</td>
+        <td headers="data_description">The file names of the screenshots. Prepend
+          <code>https://fediblock.org/blocklist/</code> and you have the URL.</td>
+      </tr>
+      <tr>
+        <td headers="data_property">tags (array of strings)</td>
+        <td headers="data_description">Tags to classify the problems with the instance.</td>
+      </tr>
+    </table>
+
+    <h2 id="contact">Contact</h2>
+
+    <p>
+      You can reach us in the Fediverse at
+      <a rel="me" href="https://botsin.space/@fediblock_archive">@fediblock_archive@botsin.space</a>.
+    </p>
+
+    <h2 id="suggest">Suggest instance</h2>
+
+    <p>
+      Please make sure to include receipts (hyperlinks and/or screenshots) for all claims you make. We
+      don't want trust to be necessary to use this list.
+    </p>
+
+    <form method="post" action="/add" enctype="multipart/form-data">
+      <label for="instance">Instance:</label>
+      <input type="text" id="instance" name="instance" placeholder="example.com" required>
+      <span class="hint">(Without the “https://”)</span>
+      <br>
+
+      <label for="tags">Tags:</label>
+      <input type="text" id="tags" name="tags" placeholder="tag1,tag2" autocomplete="on" required>
+      <!-- <input type="button" id="add_tag" value="➕" disabled> -->
+      <br>
+
+      <label for="receipts">Receipts:</label>
+      <input type="url" id="receipts" name="receipts"
+        placeholder="https://example.com/@user/1234567890,https://example.com/about/more" required>
+      <!-- <input type="button" id="add_receipt" value="➕" disabled> -->
+      <br>
+
+      <label for="screenshot1">Screenshots:</label><span class="hint">(optional)</span>
+      <br>
+      <input type="file" id="screenshot1" name="screenshots[]" accept="image/*">
+      <br>
+      <input type="file" id="screenshot2" name="screenshots[]" accept="image/*">
+      <br>
+      <input type="file" id="screenshot3" name="screenshots[]" accept="image/*">
+      <br>
+      <input type="file" id="screenshot4" name="screenshots[]" accept="image/*">
+      <br>
+
+      <label for="description">Description:</label><br>
+      <textarea id="description" name="description" cols="80" rows="20" required></textarea><br>
+
+      <div style="display:none;">
+        <label for="url" style="width: 18ch;">Leave this empty:</label>
+        <input type="text" id="url" name="url">
+      </div>
+
+      <div>Please solve this mathematical question:</div>
+      <?php
+      $array = array
+      (
+          0 => "1 + 1",
+          1 => "4 + 2",
+          2 => "12 + 5",
+          3 => "15 - 3",
+          4 => "2 x 2",
+          5 => "2 - 1"
+      );
+      $random_number = rand(0, 5);
+
+      printf('<input type="text" id="captcha_id" name="captcha_id" value="%s" style="display:none;">',
+             $random_number);
+      printf('<label for="captcha_answer">%s:</label>', $array[$random_number]);
+      ?>
+      <input type="text" id="captcha_answer" name="captcha_answer" required>
+      <br>
+
+      <input type="submit">
+    </form>
+
+    <p class="footer">
+      <a href="https://schlomp.space/FediBlock">Sourcecode</a> licensed under the
+      <a href="https://www.gnu.org/licenses/agpl-3.0.html">AGPL-3.0-only</a>.
+    </p>
+  </body>
+</html>

Property (type)	Description
instance (string)	The hostname of the instance.
url (string)	The location of the full data set.
Property (type)	Description
description (string)	The reasons the instance is listed. Can be long. Not sanitized.
instance (string)	The hostname of the instance. Can be more than one, separated by comma.
receipts (array of strings)	URLs to prove the claims made in the description and tags.
report_time (string)	Date and time of reporting, UTC. Format: + %Y-%m-%dT%H:%M:%S.
screenshots (array of strings)	The file names of the screenshots. Prepend + `https://fediblock.org/blocklist/` and you have the URL.
tags (array of strings)	Tags to classify the problems with the instance.