diff --git a/lib/nulla/activitypub.ex b/lib/nulla/activitypub.ex
index 12ad121..e746002 100644
--- a/lib/nulla/activitypub.ex
+++ b/lib/nulla/activitypub.ex
@@ -96,11 +96,15 @@ defmodule Nulla.ActivityPub do
       type: "Note",
       summary: nil,
       inReplyTo: note.inReplyTo,
-      published: note.published,
+      published: note.inserted_at,
       url: note.url,
       attributedTo: note.actor.ap_id,
-      to: note.to,
-      cc: note.cc,
+      to: [
+        "https://www.w3.org/ns/activitystreams#Public"
+      ],
+      cc: [
+        "#{note.actor.ap_id}/followers"
+      ],
       sensitive: note.sensitive,
       content: note.content,
       contentMap: Jason.OrderedObject.new("#{note.language}": note.content),
@@ -337,7 +341,6 @@ defmodule Nulla.ActivityPub do
       to: [
         "https://www.w3.org/ns/activitystreams#Public"
       ],
-      cc: [],
       object:
         Jason.OrderedObject.new(
           id: "#{note.actor.ap_id}/notes/#{note.id}",
diff --git a/lib/nulla/models/activity.ex b/lib/nulla/models/activity.ex
index c69b2af..44e21bb 100644
--- a/lib/nulla/models/activity.ex
+++ b/lib/nulla/models/activity.ex
@@ -11,8 +11,8 @@ defmodule Nulla.Models.Activity do
     field :type, :string
     field :actor, :string
     field :object, :string
-    field :to, {:array, :string}
-    field :cc, {:array, :string}
+    field :to, :string
+    field :cc, :string
 
     timestamps()
   end
diff --git a/lib/nulla/models/note.ex b/lib/nulla/models/note.ex
index 2b603e6..a109559 100644
--- a/lib/nulla/models/note.ex
+++ b/lib/nulla/models/note.ex
@@ -10,10 +10,12 @@ defmodule Nulla.Models.Note do
   @primary_key {:id, :integer, autogenerate: false}
   schema "notes" do
     field :inReplyTo, :string
-    field :published, :utc_datetime
     field :url, :string
-    field :to, {:array, :string}
-    field :cc, {:array, :string}
+
+    field :visibility, Ecto.Enum,
+      values: [:public, :unlisted, :followers, :private],
+      default: :public
+
     field :sensitive, :boolean, default: false
     field :content, :string
     field :language, :string
diff --git a/priv/repo/migrations/20250615131431_create_notes.exs b/priv/repo/migrations/20250615131431_create_notes.exs
index 3115275..d872437 100644
--- a/priv/repo/migrations/20250615131431_create_notes.exs
+++ b/priv/repo/migrations/20250615131431_create_notes.exs
@@ -5,10 +5,8 @@ defmodule Nulla.Repo.Migrations.CreateNotes do
     create table(:notes, primary_key: false) do
       add :id, :bigint, primary_key: true
       add :inReplyTo, :string
-      add :published, :utc_datetime
       add :url, :string
-      add :to, {:array, :string}
-      add :cc, {:array, :string}
+      add :visibility, :string, default: "public"
       add :sensitive, :boolean, default: false
       add :content, :text
       add :language, :string
diff --git a/priv/repo/migrations/20250615131856_create_activities.exs b/priv/repo/migrations/20250615131856_create_activities.exs
index b21c662..9d95372 100644
--- a/priv/repo/migrations/20250615131856_create_activities.exs
+++ b/priv/repo/migrations/20250615131856_create_activities.exs
@@ -8,8 +8,8 @@ defmodule Nulla.Repo.Migrations.CreateActivities do
       add :type, :string, null: false
       add :actor, :string, null: false
       add :object, :text, null: false
-      add :to, {:array, :string}
-      add :cc, {:array, :string}
+      add :to, :text
+      add :cc, :text
 
       timestamps()
     end