diff --git a/app/models/site.rb b/app/models/site.rb
index fdb87659..9cc42cd0 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -234,6 +234,8 @@ class Site < ApplicationRecord
   #
   # @return [Hash] { post: Layout }
   def layouts
+    return {} if data['layouts'].blank?
+
     # Crea un Struct dinámico cuyas llaves son los nombres de todos los
     # layouts.  Si pasamos un layout que no existe, obtenemos un
     # NoMethodError
diff --git a/app/views/schemas/_row.haml b/app/views/schemas/_row.haml
index edea4f2f..e5ff1409 100644
--- a/app/views/schemas/_row.haml
+++ b/app/views/schemas/_row.haml
@@ -8,4 +8,6 @@
 -# XXX: Solo un nivel de recursividad
 - unless local_assigns[:parent_schema]
   - schema.schemas.each do |s|
+    - next if s.hidden?
     = render 'schemas/row', schema: s, site: site, filter: filter, parent_schema: schema
+
diff --git a/app/views/sites/index.haml b/app/views/sites/index.haml
index 6419a138..2cdfb727 100644
--- a/app/views/sites/index.haml
+++ b/app/views/sites/index.haml
@@ -4,7 +4,7 @@
     %p.lead= t('.help')
     - if policy(Site).new?
       = link_to t('sites.new.title'), new_site_path,
-        class: 'btn btn-secondary'
+                class: 'btn btn-secondary'
 
   %section.col
     - if @sites.empty?
@@ -19,36 +19,37 @@
             %td
               %h2
                 - if policy(site).show?
-                  = link_to site.title, site_posts_path(site, locale: site.default_locale)
+                  = link_to site.title,
+                            site_posts_path(site,
+                                            locale: site.default_locale)
                 - else
                   = site.title
               %p.lead= site.description
-              %br
               .d-flex.flex-row
                 = link_to t('.visit'), site.url, class: 'btn btn-secondary'
                 - if current_usuarie.rol_for_site(site).temporal?
                   = render 'components/btn_base',
-                    text: t('sites.invitations.accept'),
-                    path: site_usuaries_accept_invitation_path(site),
-                    title: t('help.sites.invitations.accept'),
-                    class: 'btn-secondary'
+                           text: t('sites.invitations.accept'),
+                           path: site_usuaries_accept_invitation_path(site),
+                           title: t('help.sites.invitations.accept'),
+                           class: 'btn-secondary'
                   = render 'components/btn_base',
-                    text: t('sites.invitations.reject'),
-                    path: site_usuaries_reject_invitation_path(site),
-                    title: t('help.sites.invitations.reject'),
-                    class: 'btn-secondary'
+                           text: t('sites.invitations.reject'),
+                           path: site_usuaries_reject_invitation_path(site),
+                           title: t('help.sites.invitations.reject'),
+                           class: 'btn-secondary'
                 - else
                   - if policy(site).show?
                     = render 'layouts/btn_with_tooltip',
-                      tooltip: t('help.sites.edit_posts'),
-                      type: 'success',
-                      link: site_path(site),
-                      text: t('sites.posts')
+                             tooltip: t('help.sites.edit_posts'),
+                             type: 'success',
+                             link: site_path(site),
+                             text: t('sites.posts')
                   = render 'sites/build', site: site
                   = render 'sites/moderation_queue', site: site
                   - if policy(SiteUsuarie.new(site, current_usuarie)).index?
                     = render 'layouts/btn_with_tooltip',
-                      tooltip: t('usuaries.index.help.self'),
-                      text: t('usuaries.index.title'),
-                      type: 'info',
-                      link: site_usuaries_path(site)
+                             tooltip: t('usuaries.index.help.self'),
+                             text: t('usuaries.index.title'),
+                             type: 'info',
+                             link: site_usuaries_path(site)
diff --git a/db/migrate/20240227134845_create_fediblocks.rb b/db/migrate/20240227134845_create_fediblocks.rb
index 03f65f7c..1a61ccba 100644
--- a/db/migrate/20240227134845_create_fediblocks.rb
+++ b/db/migrate/20240227134845_create_fediblocks.rb
@@ -12,7 +12,7 @@ class CreateFediblocks < ActiveRecord::Migration[6.1]
       t.string :url, null: false
       t.string :download_url, null: false
       t.string :format, null: false
-      t.jsonb  :instances, default: []
+      t.jsonb  :hostnames, default: []
     end
 
     YAML.safe_load(File.read('db/seeds/activity_pub/fediblocks.yml')).each do |fediblock|
diff --git a/db/migrate/20240228171335_rename_fediblock_instances_to_hostnames.rb b/db/migrate/20240228171335_rename_fediblock_instances_to_hostnames.rb
deleted file mode 100644
index bad343f2..00000000
--- a/db/migrate/20240228171335_rename_fediblock_instances_to_hostnames.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-# frozen_string_literal: true
-
-# Cambia el nombre de la columna para que podamos obtener todas las
-# instancias de un fediblock
-class RenameFediblockInstancesToHostnames < ActiveRecord::Migration[6.1]
-  def change
-    rename_column :activity_pub_fediblocks, :instances, :hostnames
-  end
-end
diff --git a/db/seeds/activity_pub/fediblocks.yml b/db/seeds/activity_pub/fediblocks.yml
index c977f9bf..35fe38cd 100644
--- a/db/seeds/activity_pub/fediblocks.yml
+++ b/db/seeds/activity_pub/fediblocks.yml
@@ -6,7 +6,7 @@
   id: "9046789a-5de8-4b16-beed-796060f8f3cc"
 - title: "Oliphant Tier 0"
   url: "https://writer.oliphant.social/oliphant/the-oliphant-social-blocklist"
-  download_url: "https://codeberg.org/oliphant/blocklists/raw/branch/main/blocklists/mastodon/tier0.csv"
+  download_url: "https://codeberg.org/oliphant/blocklists/raw/branch/main/blocklists/mastodon/seirdy-tier0.csv"
   format: "mastodon"
   id: "fc1efcb8-7e68-4a76-ae9e-0c447752b12b"
 - title: "The Bad Space (90%)"