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Security Architecture

WordPress never connects to RPC. WordPress never handles keys. 
WordPress PHP / Gutenberg JS
      │
      │  HTTPS · signed payloads only
      ▼
API Gateway → Bridge → Protocol API → Chain
WordPress sees a controlled web API. The chain is protected. This is a hard architectural rule.

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SYNC Plugin Responsibilities

The SYNC plugin (required, 50 PRESS):
  1. Converts published WordPress posts into Capsule drafts
  2. Extracts title, body, metadata, tags, categories, featured image
  3. Suggests structured claims from article text
  4. Submits draft to PressChain staging queue
  5. Renders Capsule status in Gutenberg sidebar panel
  6. Renders voting widget on post pages during acceptance window
  7. Renders canonical badge after acceptance
  8. Enforces Press Network feed module presence

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WordPress Config

// wp-config.php
define('PRESSCHAIN_BRIDGE_URL',       'https://bridge.presschain.io');
define('PRESSCHAIN_OUTLET_SLUG',      'the-bay-tribune');
define('PRESSCHAIN_DEFAULT_POLICY_ID', '1');
define('PRESSCHAIN_AUTO_STAGE',        true);
define('PRESSCHAIN_PRESS_FEED_ENABLED', true);
define('PRESSCHAIN_RIGHTS_ENABLED',    false);
define('PRESSCHAIN_ADS_ENABLED',       false);

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Publishing Flow

Editor clicks Publish in WordPress
         │
         ├──→ Post goes live on site (immediate, standard WP)
         │
         └──→ SYNC creates Capsule draft
                    │
                    ▼
             Journalist reviews in Gutenberg panel:
             - Claims (auto-suggested, editable)
             - Evidence (upload files / URLs)
             - Contributors (author + editor shares)
                    │
                    ▼
             Journalist clicks "Submit to PressChain"
             PressKey opens in browser → journalist approves
             30 PRESS fee deducted
                    │
                    ▼
             Capsule enters 72h acceptance queue
                    │
             ┌──────┴───────┐
           Accepted       Rejected
             │                │
         Canonical         Not Canonical
         Badge shown       (article stays live)
         Distribution on   No Press Network dist

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Gutenberg Panel HTML Structure

The SYNC plugin renders this panel in the Gutenberg sidebar: 
// Simplified SYNC panel component
function PressChainPanel({ postId }) {
  const [capsule, setCapsule] = useState(null);
  const [status, setStatus] = useState("idle");

  async function submit() {
    setStatus("signing");
    const draft = await buildCapsuleDraft(postId);

    const { signature, sessionToken } = await window.presskey.request({
      action: "SUBMIT_CAPSULE",
      capsule: draft,
    });

    const res = await fetch(`${BRIDGE_URL}/capsules/create`, {
      method: "POST",
      headers: { "Authorization": `Bearer ${sessionToken}` },
      body: JSON.stringify({ ...draft, signature }),
    });

    const data = await res.json();
    setCapsule(data.capsule);
    setStatus("submitted");
  }

  if (status === "submitted") {
    return <CapsuleStatusPanel capsule={capsule} />;
  }

  return (
    <PanelBody title="PressChain">
      <ClaimsEditor postId={postId} />
      <EvidenceUploader />
      <ContributorsList />
      <Button onClick={submit}>Submit to PressChain</Button>
    </PanelBody>
  );
}

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Shortcodes

[presschain_vote capsule_id="247"]
[presschain_badge capsule_id="247"]
[presschain_integrity capsule_id="247"]
[presschain_press_feed limit="5" topic=""]

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Press Network Feed (Mandatory)

// Register shortcode
add_shortcode('presschain_press_feed', function($atts) {
  $args = shortcode_atts(['limit' => 5, 'topic' => ''], $atts);
  $capsules = fetch_press_network_feed($args['limit'], $args['topic']);
  return render_feed_widget($capsules);
});

function fetch_press_network_feed($limit, $topic) {
  $url = PRESSCHAIN_BRIDGE_URL . "/capsules?status=accepted&limit={$limit}";
  if ($topic) $url .= "&topic={$topic}";
  $response = wp_remote_get($url);
  return json_decode(wp_remote_retrieve_body($response), true);
}

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Troubleshooting

IssueCauseFix
Panel missing in editorPlugin not activatedDeactivate → Reactivate SYNC
”Outlet not active”Domain verification lapsedRe-verify in Portal
”Session expired”PressKey token timed outSYNC Settings → Re-connect PressKey
Voting widget not showingCapsule not in active windowCheck capsule status via Bridge
Bridge connection refusedService downcurl https://bridge.presschain.io/health
Feed not renderingPress Network module disabledRe-enable in SYNC settings (mandatory)

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REST API Endpoints (WordPress → Bridge)

POST /wp-json/presschain/v1/submit     Submit a capsule draft
GET  /wp-json/presschain/v1/status/:id Get capsule status for post
POST /wp-json/presschain/v1/verify     Verify outlet domain
GET  /wp-json/presschain/v1/feed       Fetch Press Network feed
These are internal WordPress REST routes that SYNC exposes. They proxy to Bridge with the outlet’s session token stored server-side.