diff --git a/app/Actions/Fortify/UpdateUserProfileInformation.php b/app/Actions/Fortify/UpdateUserProfileInformation.php
index 1609a95e..71f48219 100644
--- a/app/Actions/Fortify/UpdateUserProfileInformation.php
+++ b/app/Actions/Fortify/UpdateUserProfileInformation.php
@@ -20,6 +20,7 @@ class UpdateUserProfileInformation implements UpdatesUserProfileInformation
             'name' => ['required', 'string', 'max:255'],
             'lightning_address' => ['nullable', 'string'],
             'lnurl' => ['nullable', 'string'],
+            'nostr' => ['nullable', 'string'],
             'node_id' => ['nullable', 'string', 'max:66'],
             'timezone' => ['required', 'string'],
             'email' => [
@@ -42,6 +43,7 @@ class UpdateUserProfileInformation implements UpdatesUserProfileInformation
                 'name' => $input['name'],
                 'lightning_address' => $input['lightning_address'],
                 'lnurl' => $input['lnurl'],
+                'nostr' => $input['nostr'],
                 'node_id' => $input['node_id'],
                 'email' => $input['email'],
                 'timezone' => $input['timezone'],
@@ -62,6 +64,7 @@ class UpdateUserProfileInformation implements UpdatesUserProfileInformation
             'lightning_address' => $input['lightning_address'],
             'lnurl' => $input['lnurl'],
             'node_id' => $input['node_id'],
+            'nostr' => $input['nostr'],
             'email' => $input['email'],
             'timezone' => $input['timezone'],
             'email_verified_at' => null,
diff --git a/app/Observers/LibraryItemObserver.php b/app/Observers/LibraryItemObserver.php
index faf1b815..a3f5a3b0 100644
--- a/app/Observers/LibraryItemObserver.php
+++ b/app/Observers/LibraryItemObserver.php
@@ -20,14 +20,11 @@ class LibraryItemObserver
         try {
             $libraryItem->setStatus('published');
 
-            $from = $libraryItem->name;
-            $from .= ' von '.$libraryItem->lecturer->name;
-
             if ($libraryItem->type !== LibraryItemType::MarkdownArticle()) {
                 if ($libraryItem->whereDoesntHave('libraries',
                     fn($query) => $query->where('libraries.is_public', false))
                                 ->exists()) {
-                    $this->publishOnNostr($libraryItem, $this->getText('LibraryItem', $from));
+                    $this->publishOnNostr($libraryItem, $this->getText('LibraryItem'));
                 }
             }
         } catch (Exception $e) {
diff --git a/app/Observers/MeetupEventObserver.php b/app/Observers/MeetupEventObserver.php
index 1b59148c..b527ec63 100644
--- a/app/Observers/MeetupEventObserver.php
+++ b/app/Observers/MeetupEventObserver.php
@@ -17,11 +17,7 @@ class MeetupEventObserver
     public function created(MeetupEvent $meetupEvent): void
     {
         try {
-            $from = $meetupEvent->meetup->name;
-            if ($meetupEvent->meetup->nostr) {
-                $from .= ' @'.$meetupEvent->meetup->nostr;
-            }
-            $this->publishOnNostr($meetupEvent, $this->getText('MeetupEvent', $from));
+            $this->publishOnNostr($meetupEvent, $this->getText('MeetupEvent'));
         } catch (Exception $e) {
             Log::error($e->getMessage());
         }
diff --git a/app/Observers/MeetupObserver.php b/app/Observers/MeetupObserver.php
index da8dcd9d..9f1d8762 100644
--- a/app/Observers/MeetupObserver.php
+++ b/app/Observers/MeetupObserver.php
@@ -17,11 +17,7 @@ class MeetupObserver
     public function created(Meetup $meetup): void
     {
         try {
-            $from = $meetup->name;
-            if ($meetup->nostr) {
-                $from .= ' @'.$meetup->nostr;
-            }
-            $this->publishOnNostr($meetup, $this->getText('Meetup', $from));
+            $this->publishOnNostr($meetup, $this->getText('Meetup'));
         } catch (Exception $e) {
             Log::error($e->getMessage());
         }
diff --git a/app/Traits/NostrTrait.php b/app/Traits/NostrTrait.php
index d734daa7..37c06d8c 100644
--- a/app/Traits/NostrTrait.php
+++ b/app/Traits/NostrTrait.php
@@ -32,8 +32,9 @@ trait NostrTrait
         ];
     }
 
-    public function getText($model, $from = null)
+    public function getText($model)
     {
+        $from = '';
         if ($model instanceof BitcoinEvent) {
             return sprintf("Ein neues Event wurde eingestellt:\n\n%s\n\n%s bis %s\n\n%s\n\n%s\n\n#Bitcoin #Event #Einundzwanzig #gesundesgeld",
                 $model->title,
@@ -44,8 +45,14 @@ trait NostrTrait
             );
         }
         if ($model instanceof CourseEvent) {
+            if ($model->lecturer->nostr) {
+                $from .= '@'.$model->lecturer->nostr;
+            } else {
+                $from .= $model->lecturer->name;
+            }
+
             return sprintf("Unser Dozent %s hat einen neuen Kurs-Termin eingestellt:\n\n%s\n\n%s\n\n%s\n\n#Bitcoin #Kurs #Education #Einundzwanzig #gesundesgeld",
-                $model->course->lecturer->name,
+                $from,
                 $model->course->name,
                 str($model->course->description)->limit(80),
                 url()->route('school.landingPage.lecturer',
@@ -53,6 +60,11 @@ trait NostrTrait
             );
         }
         if ($model instanceof MeetupEvent) {
+            $from = $model->meetup->name;
+            if ($model->meetup->nostr) {
+                $from .= ' @'.$model->meetup->nostr;
+            }
+
             return sprintf("%s hat einen neuen Termin eingestellt:\n\n%s\n\n%s\n\n%s\n\n#Bitcoin #Meetup #Einundzwanzig #gesundesgeld",
                 $from,
                 $model->start->asDateTime(),
@@ -62,14 +74,25 @@ trait NostrTrait
             );
         }
         if ($model instanceof Meetup) {
+            $from = $model->name;
+            if ($model->nostr) {
+                $from .= ' @'.$model->nostr;
+            }
+
             return sprintf("Eine neue Meetup Gruppe wurde hinzugefügt:\n\n%s\n\n%s\n\n#Bitcoin #Meetup #Einundzwanzig #gesundesgeld",
                 $from,
                 url()->route('meetup.landing', ['country' => $model->city->country->code, 'meetup' => $model])
             );
         }
         if ($model instanceof Course) {
+            if ($model->lecturer->nostr) {
+                $from .= '@'.$model->lecturer->nostr;
+            } else {
+                $from .= $model->lecturer->name;
+            }
+
             return sprintf("Unser Dozent %s hat einen neuen Kurs eingestellt:\n\n%s\n\n%s\n\n%s\n\n#Bitcoin #Kurs #Education #Einundzwanzig #gesundesgeld",
-                $model->lecturer->name,
+                $from,
                 $model->name,
                 str($model->description)->limit(80),
                 url()->route('school.landingPage.lecturer',
@@ -77,6 +100,13 @@ trait NostrTrait
             );
         }
         if ($model instanceof LibraryItem) {
+            $from = $model->name;
+            if ($model->lecturer->nostr) {
+                $from .= ' von @'.$model->lecturer->nostr;
+            } else {
+                $from .= ' von '.$model->lecturer->name;
+            }
+
             return sprintf("Es gibt was Neues zum Lesen oder Anhören:\n\n%s\n\n%s\n\n#Bitcoin #Wissen #Einundzwanzig #gesundesgeld",
                 $from,
                 url()->route('article.view',
diff --git a/database/migrations/2023_02_24_104336_add_nostr_fields_to_users_table.php b/database/migrations/2023_02_24_104336_add_nostr_fields_to_users_table.php
new file mode 100644
index 00000000..b32549c3
--- /dev/null
+++ b/database/migrations/2023_02_24_104336_add_nostr_fields_to_users_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->string('nostr')
+                  ->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            //
+        });
+    }
+};
diff --git a/resources/views/profile/update-profile-information-form.blade.php b/resources/views/profile/update-profile-information-form.blade.php
index 1deeff4c..66d5e1cd 100644
--- a/resources/views/profile/update-profile-information-form.blade.php
+++ b/resources/views/profile/update-profile-information-form.blade.php
@@ -65,6 +65,14 @@
             <p class="text-xs">{{ __('Only one working address is required. But you can also fill in all fields if you have suitable data.') }}</p>
         </div>
 
+        <!-- nostr -->
+        <div class="col-span-6 sm:col-span-4">
+            <x-jet-label for="nostr" value="{{ __('Nostr public key') }}"/>
+            <x-jet-input id="nostr" type="text" class="mt-1 block w-full" wire:model.defer="state.nostr"
+                         autocomplete="nostr"/>
+            <x-jet-input-error for="nostr" class="mt-2"/>
+        </div>
+
         <!-- lightning_address -->
         <div class="col-span-6 sm:col-span-4">
             <x-jet-label for="lightning_address" value="{{ __('Lightning Address') }}"/>