diff --git a/resources/views/components/service-disclaimer.blade.php b/resources/views/components/service-disclaimer.blade.php
new file mode 100644
index 0000000..d0f695e
--- /dev/null
+++ b/resources/views/components/service-disclaimer.blade.php
@@ -0,0 +1,23 @@
+{{-- ponytail: ein wiederverwendbarer Disclaimer für Index- und Landingpage --}}
+<div role="alert"
+     class="mb-8 rounded-2xl border-4 border-amber-500 bg-amber-50 text-amber-950 dark:border-amber-400 dark:bg-amber-950 dark:text-amber-50 shadow-lg">
+    <div class="flex flex-col gap-4 p-5 sm:flex-row sm:items-start sm:gap-5 sm:p-7">
+        <flux:icon.exclamation-triangle
+            class="size-12 shrink-0 text-amber-600 dark:text-amber-300 motion-safe:animate-pulse"/>
+        <div class="space-y-3">
+            <p class="text-2xl font-black uppercase tracking-tight sm:text-3xl">
+                {{ __('Keine Empfehlung von EINUNDZWANZIG') }}
+            </p>
+            <p class="text-base font-semibold leading-relaxed sm:text-lg">
+                {{ __('Diese Einträge stammen von Plebs selbst – nicht von EINUNDZWANZIG geprüft, kuratiert oder empfohlen.') }}
+            </p>
+            <p class="text-base font-bold leading-relaxed sm:text-lg">
+                {{ __("Don't trust, verify: Prüfe jeden Service eigenständig auf Qualität und Sicherheit.") }}
+            </p>
+            <ul class="list-disc space-y-1 pl-5 text-sm font-medium sm:text-base">
+                <li>{{ __('Achte darauf, dass der Service stets die neueste Version der Software betreibt.') }}</li>
+                <li>{{ __('Validiere den Einsteller über sein npub.') }}</li>
+            </ul>
+        </div>
+    </div>
+</div>
diff --git a/resources/views/livewire/services/index.blade.php b/resources/views/livewire/services/index.blade.php
index 2cdd5fd..9d5448b 100644
--- a/resources/views/livewire/services/index.blade.php
+++ b/resources/views/livewire/services/index.blade.php
@@ -42,6 +42,8 @@ class extends Component {
 }; ?>
 
 <div>
+    <x-service-disclaimer/>
+
     <div class="flex items-center justify-between flex-col md:flex-row mb-6">
         <flux:heading size="xl">{{ __('Self Hosted Services') }}</flux:heading>
         <div class="flex flex-col md:flex-row items-center gap-4">
@@ -193,6 +195,14 @@ class extends Component {
                             <div class="flex items-center gap-2">
                                 <flux:avatar size="xs" src="{{ $service->createdBy->profile_photo_url }}"/>
                                 <span>{{ Str::length($service->createdBy->name) > 20 ? Str::substr($service->createdBy->name, 0, 4) . '...' . Str::substr($service->createdBy->name, -3) : $service->createdBy->name }}</span>
+                                @if($service->createdBy->nostr)
+                                    <flux:tooltip content="{{ __('Ersteller auf Nostr validieren (njump)') }}">
+                                        <flux:link :href="'https://njump.me/'.$service->createdBy->nostr" external
+                                                   variant="subtle" class="inline-flex items-center">
+                                            <flux:icon.magnifying-glass variant="mini" class="text-purple-600 dark:text-purple-400"/>
+                                        </flux:link>
+                                    </flux:tooltip>
+                                @endif
                             </div>
                         @endif
                     </flux:table.cell>
diff --git a/resources/views/livewire/services/landingpage.blade.php b/resources/views/livewire/services/landingpage.blade.php
index ef03baf..f54b3e9 100644
--- a/resources/views/livewire/services/landingpage.blade.php
+++ b/resources/views/livewire/services/landingpage.blade.php
@@ -52,6 +52,8 @@ class extends Component {
 @endsection
 
 <div class="container mx-auto px-4 py-8 max-w-5xl">
+    <x-service-disclaimer/>
+
     <!-- Header -->
     <div class="mb-8">
         <div class="flex items-center justify-between mb-4">
@@ -196,6 +198,14 @@ class extends Component {
                                 <flux:avatar size="xs" src="{{ $service->createdBy->profile_photo_url }}"/>
                                 <span class="font-medium">{{ $service->createdBy->name }}</span>
                             </div>
+                            @if($service->createdBy->nostr)
+                                <flux:link :href="'https://njump.me/'.$service->createdBy->nostr" external
+                                           variant="subtle"
+                                           class="mt-2 inline-flex items-center gap-1 text-purple-600 dark:text-purple-400">
+                                    <flux:icon.magnifying-glass variant="mini"/>
+                                    <span>{{ __('Ersteller auf Nostr validieren (njump)') }}</span>
+                                </flux:link>
+                            @endif
                         @endif
                     </div>
 
diff --git a/tests/Feature/ServiceDisclaimerTest.php b/tests/Feature/ServiceDisclaimerTest.php
new file mode 100644
index 0000000..ce5408c
--- /dev/null
+++ b/tests/Feature/ServiceDisclaimerTest.php
@@ -0,0 +1,38 @@
+<?php
+
+use App\Models\SelfHostedService;
+use App\Models\User;
+
+it('shows the disclaimer and njump link on the services index', function () {
+    SelfHostedService::factory()->for(
+        User::factory()->create(['nostr' => 'npub1example']),
+        'createdBy'
+    )->create();
+
+    $this->get(route('services.index', ['country' => 'de']))
+        ->assertOk()
+        ->assertSee('Keine Empfehlung von EINUNDZWANZIG')
+        ->assertSee('npub')
+        ->assertSee('https://njump.me/npub1example');
+});
+
+it('shows the disclaimer and njump link on the service landingpage', function () {
+    $service = SelfHostedService::factory()->for(
+        User::factory()->create(['nostr' => 'npub1example']),
+        'createdBy'
+    )->create();
+
+    $this->get(route('services.landingpage', ['country' => 'de', 'service' => $service->slug]))
+        ->assertOk()
+        ->assertSee('Keine Empfehlung von EINUNDZWANZIG')
+        ->assertSee('https://njump.me/npub1example');
+});
+
+it('omits the njump link for anonymous services', function () {
+    $service = SelfHostedService::factory()->anonymous()->create();
+
+    $this->get(route('services.landingpage', ['country' => 'de', 'service' => $service->slug]))
+        ->assertOk()
+        ->assertSee('Keine Empfehlung von EINUNDZWANZIG')
+        ->assertDontSee('njump.me');
+});