diff --git a/hubzilla/addon/g1wallet/g1wallet.php b/hubzilla/addon/g1wallet/g1wallet.php
index 59eb52c..254b6ff 100644
--- a/hubzilla/addon/g1wallet/g1wallet.php
+++ b/hubzilla/addon/g1wallet/g1wallet.php
@@ -3,7 +3,7 @@
 /**
  * Name: Ğ1 Wallet
  * Description: Self-sovereign Ğ1 wallet for SASE-verified participants. Key derivation and signing in the browser. The platform never touches your keys.
- * Version: 0.1.0
+ * Version: 0.2.0
  * MinVersion: 11.0
  * MaxVersion: 12.0
  */
@@ -36,9 +36,9 @@ function g1wallet_load_pdl(&$b) {
     }
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // HELPERS
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_h($value) {
     // HTML-escapes a value for safe output.
@@ -53,9 +53,9 @@ function g1wallet_load_config() {
     return (json_last_error() === JSON_ERROR_NONE) ? $cfg : [];
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // ACCESS
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_access_state() {
     // Returns operator, participant, or public.
@@ -80,13 +80,13 @@ function g1wallet_access_state() {
     $associations = $cfg['associations'] ?? [];
     if (empty($associations)) return 'public';
 
-    // Direct pgrp_member query — works for guest tokens.
+    // Direct pggrp_member query — works for guest tokens.
     foreach ($associations as $slug => $assoc) {
         $groups = $assoc['groups'] ?? [];
         foreach (['corpus_builder', 'sase_participant', 'civic_professional'] as $group_key) {
             $gid = intval($groups[$group_key] ?? 0);
             if ($gid) {
-                $r = q("SELECT xchan FROM pgrp_member WHERE gid = %d AND xchan = '%s' LIMIT 1",
+                $r = q("SELECT xchan FROM pggrp_member WHERE gid = %d AND xchan = '%s' LIMIT 1",
                     intval($gid),
                     dbesc($observer)
                 );
@@ -98,17 +98,22 @@ function g1wallet_access_state() {
     return 'public';
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // CONTENT ROUTER
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_content() {
     if (function_exists('head_add_css')) {
         head_add_css('/addon/g1wallet/view/css/g1wallet.css');
     }
     if (function_exists('head_add_js')) {
+        // bip39 must load before g1wallet.js (g1wallet.js calls window.bip39).
         head_add_js('/addon/g1wallet/vendor/bip39-3.1.0.min.js');
         head_add_js('/addon/g1wallet/view/js/g1wallet.js');
+        // Note: vendor/scrypt-js-3.0.1.min.js is NOT loaded.
+        // scrypt is the obsolete Cesium1 / Duniter v1 derivation algorithm.
+        // Duniter v2 / Ğecko uses entropy-as-seed (no KDF). The file is
+        // retained in vendor/ for reference but is not wired anywhere.
     }
 
     $access    = g1wallet_access_state();
@@ -136,7 +141,7 @@ function g1wallet_content() {
             return g1wallet_handle_broadcast_post();
 
         case 'pubkey':
-            // POST: store participant's public key in channel settings after unlock.
+            // POST: store public key in channel settings after unlock.
             if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
                 return g1wallet_render_error('POST required.');
             }
@@ -151,9 +156,9 @@ function g1wallet_content() {
     }
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // CSRF
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_csrf_token() {
     // Generates and stores a CSRF token for the current session.
diff --git a/hubzilla/addon/g1wallet/g1wallet_renderer.php b/hubzilla/addon/g1wallet/g1wallet_renderer.php
index e435783..8786e97 100644
--- a/hubzilla/addon/g1wallet/g1wallet_renderer.php
+++ b/hubzilla/addon/g1wallet/g1wallet_renderer.php
@@ -6,33 +6,31 @@
  * Knows nothing about crypto — that lives entirely in g1wallet.js.
  */
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // ACCESS WALL
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_render_access_wall() {
+    $directory_url = g1wallet_h(z_root() . '/channel/theron');
     return '
         <div class="g1wallet-content">
             <div class="alert alert-info" role="alert">
                 <strong>SASE verification required to access the Ğ1 Wallet.</strong>
                 This wallet is available to verified HOA participants only.
                 To participate, you must complete the SASE process.
-                Visit <a href="https://directory.diagnostics.kane-il.us/channel/theron">
-                    directory.diagnostics.kane-il.us
-                </a> to begin.
+                Visit <a href="' . $directory_url . '">' . g1wallet_h(App::get_hostname()) . '</a> to begin.
             </div>
         </div>
     ';
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // WALLET LANDING
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_render_landing($access) {
     // Wallet landing: shows unlock form or unlocked interface depending on JS session state.
-    // At skeleton stage, always shows the unlock form.
-    // Once g1wallet.js is wired, the JS will swap to the unlocked view on successful derivation.
+    // JS swaps to the unlocked view on successful derivation.
 
     $out  = '<div class="g1wallet-content">';
     $out .= '<div class="g1wallet-header mb-3">';
@@ -63,18 +61,21 @@ function g1wallet_render_landing($access) {
     return $out;
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // UNLOCK FORM
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_render_unlock_form() {
     // Renders the wallet unlock form.
     // The form is handled entirely by g1wallet.js — it does NOT POST to the server.
     // The mnemonic never leaves the browser.
     //
-    // Per Duniter HD Wallet RFC 0015 (Dubp_HD_Wallet), the wallet's keypair is
-    // derived from a 12-word BIP39 mnemonic (English wordlist), using its
-    // entropy as input to a BIP32-Ed25519 derivation — not a raw PBKDF2 seed.
+    // Derivation (Duniter v2 / Substrate / Ğecko standard):
+    //   12-word BIP39 mnemonic
+    //   → mnemonicToEntropy() → 16 bytes of raw entropy
+    //   → use entropy directly as 32-byte Ed25519 seed (zero-padded right)
+    //   → derive Ed25519 keypair (SubtleCrypto, non-extractable private key)
+    //   → SS58-encode public key with Ğ1 network prefix → g1... address
 
     $out  = '<div class="g1wallet-unlock-form">';
     $out .= '<h4>Unlock Your Wallet</h4>';
@@ -99,13 +100,13 @@ function g1wallet_render_unlock_form() {
     return $out;
 }
 
-// ----------------------------------------------------------------------------
-// UNLOCKED INTERFACE (PLACEHOLDER)
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+// UNLOCKED INTERFACE
+// -----------------------------------------------------------------------------
 
 function g1wallet_render_unlocked_placeholder($access) {
-    // Placeholder for the unlocked wallet interface.
-    // Populated by g1wallet.js once key derivation is implemented.
+    // Unlocked wallet interface.
+    // Populated by g1wallet.js after key derivation.
 
     $out  = '<div class="g1wallet-unlocked">';
     $out .= '<div class="alert alert-success d-flex justify-content-between align-items-center">';
@@ -114,7 +115,7 @@ function g1wallet_render_unlocked_placeholder($access) {
     $out .= '</div>';
 
     $out .= '<div class="mb-3">';
-    $out .= '<h5 class="g1wallet-section-label">Public Key</h5>';
+    $out .= '<h5 class="g1wallet-section-label">Public Key (Ğ1 Address)</h5>';
     $out .= '<p id="g1wallet-pubkey-display" class="font-monospace text-muted small">—</p>';
     $out .= '</div>';
 
@@ -141,9 +142,9 @@ function g1wallet_render_unlocked_placeholder($access) {
     return $out;
 }
 
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 // ERROR
-// ----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
 
 function g1wallet_render_error($message) {
     // Shows a plain-language error. Never shows a blank page or stack trace.
diff --git a/hubzilla/addon/g1wallet/g1wallet_spool.php b/hubzilla/addon/g1wallet/g1wallet_spool.php
index 860e70f..e03dcda 100644
--- a/hubzilla/addon/g1wallet/g1wallet_spool.php
+++ b/hubzilla/addon/g1wallet/g1wallet_spool.php
@@ -2,36 +2,72 @@
 
 /**
  * g1wallet_spool.php — POST handlers for g1wallet.
- * pubkey store: receives public key after unlock, stores in channel settings.
+ * pubkey store: receives public key (SS58 g1... address) after unlock, stores in channel settings.
  * broadcast relay: receives signed Duniter transaction, relays to orchestrator.
  *
- * At skeleton stage both handlers return placeholder responses.
  * The private key never reaches this file. Ever.
  */
 
 function g1wallet_handle_pubkey_post($access) {
-    // Stores the participant's Ğ1 public key in their Hubzilla channel settings.
-    // Called once after first wallet unlock (and on re-unlock if key changes).
+    // Stores the participant's Ğ1 public key (SS58 address) in their Hubzilla
+    // channel settings. Called once after each wallet unlock (server deduplicates
+    // by checking the existing value before writing).
     // The public key is the only wallet-related thing the server ever stores.
 
     $pubkey = trim($_POST['g1_pubkey'] ?? '');
 
     if (!$pubkey) {
-        return g1wallet_render_error('Public key is required.');
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Public key is required.']);
+        killme();
     }
 
-    // Basic length check — Ğ1 public keys are 43–44 characters in base58.
-    if (strlen($pubkey) < 43 || strlen($pubkey) > 64) {
-        return g1wallet_render_error('Invalid public key format.');
+    // Ğ1 SS58 addresses: base58-encoded, 36 bytes decoded, begin with "g1".
+    // Encoded length is 46–47 characters. Reject anything outside that range.
+    $len = strlen($pubkey);
+    if ($len < 46 || $len > 48) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Invalid public key format.']);
+        killme();
     }
 
-    // TODO: store $pubkey in Hubzilla channel settings using set_pconfig() or equivalent.
-    // Placeholder: log and return success shell.
-    // set_pconfig(local_channel(), 'g1wallet', 'g1_pubkey', $pubkey);
+    // Must begin with "g1" (SS58 with Ğ1 network prefix).
+    if (strncmp($pubkey, 'g1', 2) !== 0) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Invalid public key prefix.']);
+        killme();
+    }
+
+    // Only base58 characters (Bitcoin alphabet, no 0/O/I/l).
+    if (!preg_match('/^[1-9A-HJ-NP-Za-km-z]+$/', $pubkey)) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Invalid public key characters.']);
+        killme();
+    }
+
+    // Determine channel_id to write against.
+    // Operators use their own channel_id. Participants also use local_channel().
+    // We do not write other channels' keys — only the caller's own.
+    $channel_id = local_channel();
+    if (!$channel_id) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Not authenticated.']);
+        killme();
+    }
+
+    // Deduplicate: if the stored key matches, return ok without writing.
+    $existing = get_pconfig($channel_id, 'g1wallet', 'g1_pubkey');
+    if ($existing === $pubkey) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'ok', 'note' => 'Key unchanged.']);
+        killme();
+    }
+
+    // Store the public key.
+    set_pconfig($channel_id, 'g1wallet', 'g1_pubkey', $pubkey);
 
-    // Return JSON for fetch() caller in g1wallet.js.
     header('Content-Type: application/json');
-    echo json_encode(['status' => 'ok', 'note' => 'Pubkey storage not yet implemented.']);
+    echo json_encode(['status' => 'ok']);
     killme();
 }
 
@@ -51,13 +87,66 @@ function g1wallet_handle_broadcast_post() {
         killme();
     }
 
-    // TODO: load config, relay to orchestrator POST /g1wallet/broadcast.
-    // $config = g1wallet_load_config();
-    // $orchestrator_url = $config['orchestrator_url'] ?? '';
-    // $node_token = $config['node_token'] ?? '';
-    // ... HTTP relay to orchestrator ...
+    // Validate doc_type is a known type.
+    $allowed_types = ['transfer', 'certification'];
+    if (!in_array($doc_type, $allowed_types, true)) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Unknown doc_type.']);
+        killme();
+    }
+
+    // Load config for orchestrator endpoint.
+    $config = g1wallet_load_config();
+    $orchestrator_url = rtrim($config['orchestrator_url'] ?? '', '/');
+    $node_token       = $config['node_token'] ?? '';
+
+    if (!$orchestrator_url || !$node_token) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Orchestrator not configured.']);
+        killme();
+    }
+
+    // Relay to orchestrator POST /g1wallet/broadcast.
+    $payload = json_encode([
+        'signed_doc' => $signed_doc,
+        'doc_type'   => $doc_type,
+    ]);
+
+    $ch = curl_init($orchestrator_url . '/g1wallet/broadcast');
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+    curl_setopt($ch, CURLOPT_POST, true);
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
+    curl_setopt($ch, CURLOPT_HTTPHEADER, [
+        'Content-Type: application/json',
+        'X-Node-Token: ' . $node_token,
+    ]);
+    curl_setopt($ch, CURLOPT_TIMEOUT, 15);
+
+    $raw     = curl_exec($ch);
+    $http    = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+    $err     = curl_error($ch);
+    curl_close($ch);
+
+    if ($err) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Orchestrator unreachable.']);
+        killme();
+    }
+
+    if ($http !== 200) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Orchestrator returned HTTP ' . intval($http) . '.']);
+        killme();
+    }
+
+    $result = json_decode($raw, true);
+    if (json_last_error() !== JSON_ERROR_NONE || !isset($result['status'])) {
+        header('Content-Type: application/json');
+        echo json_encode(['status' => 'error', 'message' => 'Invalid orchestrator response.']);
+        killme();
+    }
 
     header('Content-Type: application/json');
-    echo json_encode(['status' => 'ok', 'note' => 'Broadcast relay not yet implemented.']);
+    echo json_encode($result);
     killme();
 }