diff --git a/hubzilla/addon/dsc01/dsc01_spool.php b/hubzilla/addon/dsc01/dsc01_spool.php
index e4e3453..ada14a3 100644
--- a/hubzilla/addon/dsc01/dsc01_spool.php
+++ b/hubzilla/addon/dsc01/dsc01_spool.php
@@ -12,7 +12,7 @@
 // ---------------------------------------------------------------------------
 
 function dsc01_handle_post($association_slug, $access) {
-    $categories = dsc01_load_categories();
+    $categories  = dsc01_load_categories();
     $valid_codes = array_keys($categories);
 
     $raw_codes = $_POST['dsc_codes'] ?? [];
@@ -38,26 +38,30 @@ function dsc01_handle_post($association_slug, $access) {
         return $out;
     }
 
-    // Build spool envelope
+    // Load association config
     $cfg_raw = @file_get_contents('addon/vs01/config.json');
     $cfg     = $cfg_raw ? json_decode($cfg_raw, true) : [];
     $assoc   = $cfg['associations'][$association_slug] ?? [];
 
+    // Load dsc01 config for receiver_url and node_token
+    $dsc_config = dsc01_load_config();
+
     $envelope = dsc01_build_spool_envelope(
         $codes,
         $narrative,
         $association_slug,
         $assoc['channel_id'] ?? '',
-        $access
+        $access,
+        $dsc_config['node_token'] ?? ''
     );
 
-    $result = dsc01_post_to_orchestrator($envelope);
+    $result = dsc01_post_to_orchestrator($envelope, $dsc_config);
 
     if ($result === true) {
         $assoc_name = dsc01_h($assoc['name'] ?? $association_slug);
         return '<div class="dsc01-content">
                     <div class="alert alert-success">
-                        Your checklist for ' . $assoc_name . ' has been submitted.
+                        Your checklist for ' . $assoc_name . ' has been saved.
                         <a href="' . z_root() . '/vs01/' . dsc01_h($association_slug) . '">
                             Return to ' . $assoc_name . '
                         </a>
@@ -75,29 +79,58 @@ function dsc01_handle_post($association_slug, $access) {
 
 // ---------------------------------------------------------------------------
 // SPOOL ENVELOPE
+// Matches contracts/dsc01/record-v1.json — _header / _payload shape.
 // ---------------------------------------------------------------------------
 
-function dsc01_build_spool_envelope($dsc_codes, $narrative, $association_slug, $channel_id, $standing) {
+function dsc01_build_spool_envelope($dsc_codes, $narrative, $association_slug, $channel_id, $standing, $node_token) {
     return [
-        'addon'                   => 'dsc01',
-        'contract_version'        => '1.0',
-        'association_slug'        => $association_slug,
-        'association_channel_id'  => (string) $channel_id,
-        'submitted_at'             => date('c'),
-        'standing'                 => $standing,
-        'dsc_codes'                => $dsc_codes,
-        'narrative'                => $narrative,
+        '_header' => [
+            'addon'                  => 'dsc01',
+            'contract_version'       => '1.0',
+            'association_slug'       => $association_slug,
+            'association_channel_id' => (string) $channel_id,
+            'participant_id'         => dsc01_get_participant_id(),
+            'submitted_at'           => date('c'),
+            'standing'               => $standing,
+            'node_token_hash'        => hash('sha256', $node_token),
+        ],
+        '_payload' => [
+            'fields' => [
+                'dsc_codes' => $dsc_codes,
+                'narrative' => $narrative,
+            ],
+        ],
     ];
 }
 
+// ---------------------------------------------------------------------------
+// PARTICIPANT ID
+// ---------------------------------------------------------------------------
+
+function dsc01_get_participant_id() {
+    $observer = get_observer_hash();
+    if (!$observer) return '';
+
+    $r = q("SELECT xchan_addr FROM xchan WHERE xchan_hash = '%s' LIMIT 1",
+        dbesc($observer)
+    );
+    if (!$r) return '';
+
+    $addr  = $r[0]['xchan_addr'] ?? '';
+    $parts = explode('@', $addr);
+    return $parts[0] ?? '';
+}
+
 // ---------------------------------------------------------------------------
 // ORCHESTRATOR POST
 // ---------------------------------------------------------------------------
 
-function dsc01_post_to_orchestrator($envelope) {
-    $config       = dsc01_load_config();
+function dsc01_post_to_orchestrator($envelope, $config = null) {
+    if ($config === null) {
+        $config = dsc01_load_config();
+    }
     $receiver_url = $config['receiver_url'] ?? '';
-    $node_token   = $config['node_token'] ?? '';
+    $node_token   = $config['node_token']   ?? '';
 
     if (!$receiver_url) {
         logger('dsc01_spool: receiver_url not configured');