diff --git a/db/migrate/20240627142613_create_content_block_documents.rb b/db/migrate/20240627142613_create_content_block_documents.rb
new file mode 100644
index 00000000000..c7a06f2905a
--- /dev/null
+++ b/db/migrate/20240627142613_create_content_block_documents.rb
@@ -0,0 +1,11 @@
+class CreateContentBlockDocuments < ActiveRecord::Migration[7.1]
+  def change
+    create_table :content_block_documents do |t|
+      t.string :content_id
+      t.string :title
+      t.string :block_type
+      t.datetime "created_at", precision: nil
+      t.datetime "updated_at", precision: nil
+    end
+  end
+end
diff --git a/db/migrate/20240628082636_create_content_block_editions.rb b/db/migrate/20240628082636_create_content_block_editions.rb
new file mode 100644
index 00000000000..870136a41c2
--- /dev/null
+++ b/db/migrate/20240628082636_create_content_block_editions.rb
@@ -0,0 +1,10 @@
+class CreateContentBlockEditions < ActiveRecord::Migration[7.1]
+  def change
+    create_table :content_block_editions do |t|
+      t.json :details, null: false
+      t.references :content_block_document, index: true, foreign_key: true, null: false
+      t.datetime "created_at", precision: nil, null: false
+      t.datetime "updated_at", precision: nil, null: false
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index d56457a226e..d2a7f8b41ed 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_06_18_164903) do
+ActiveRecord::Schema[7.1].define(version: 2024_06_28_082636) do
   create_table "assets", charset: "utf8mb3", force: :cascade do |t|
     t.string "asset_manager_id", null: false
     t.string "variant", null: false
@@ -191,6 +191,22 @@
     t.index ["contactable_id", "contactable_type"], name: "index_contacts_on_contactable_id_and_contactable_type"
   end
 
+  create_table "content_block_documents", charset: "utf8mb3", force: :cascade do |t|
+    t.string "content_id"
+    t.string "title"
+    t.string "block_type"
+    t.datetime "created_at", precision: nil
+    t.datetime "updated_at", precision: nil
+  end
+
+  create_table "content_block_editions", charset: "utf8mb3", force: :cascade do |t|
+    t.json "details", null: false
+    t.bigint "content_block_document_id", null: false
+    t.datetime "created_at", precision: nil, null: false
+    t.datetime "updated_at", precision: nil, null: false
+    t.index ["content_block_document_id"], name: "index_content_block_editions_on_content_block_document_id"
+  end
+
   create_table "data_migration_records", id: :integer, charset: "utf8mb3", force: :cascade do |t|
     t.string "version"
     t.index ["version"], name: "index_data_migration_records_on_version", unique: true
@@ -1293,6 +1309,7 @@
     t.datetime "updated_at", precision: nil
   end
 
+  add_foreign_key "content_block_editions", "content_block_documents"
   add_foreign_key "documents", "editions", column: "latest_edition_id", on_update: :cascade, on_delete: :nullify
   add_foreign_key "documents", "editions", column: "live_edition_id", on_update: :cascade, on_delete: :nullify
   add_foreign_key "link_checker_api_report_links", "link_checker_api_reports"
diff --git a/docs/diagrams/object_store_models.png b/docs/diagrams/object_store_models.png
new file mode 100644
index 00000000000..ff6361b8084
Binary files /dev/null and b/docs/diagrams/object_store_models.png differ
diff --git a/docs/diagrams/object_store_models.puml b/docs/diagrams/object_store_models.puml
new file mode 100644
index 00000000000..a2c6603dbe0
--- /dev/null
+++ b/docs/diagrams/object_store_models.puml
@@ -0,0 +1,25 @@
+@startuml object_store_models
+allowmixing
+hide empty description
+
+together {
+    class ContentBlockDocument {
+        content_id
+        block_type
+        title
+    }
+    database content_block_documents
+    ContentBlockDocument .> content_block_documents
+}
+
+together {
+    class ContentBlockEdition {
+        details
+    }
+    database content_block_editions
+    ContentBlockEdition .> content_block_editions
+}
+
+ContentBlockDocument *-r- ContentBlockEdition : "has_many"
+
+@enduml
diff --git a/lib/engines/content_object_store/app/models/content_object_store/content_block_document.rb b/lib/engines/content_object_store/app/models/content_object_store/content_block_document.rb
new file mode 100644
index 00000000000..ddf3b949b4c
--- /dev/null
+++ b/lib/engines/content_object_store/app/models/content_object_store/content_block_document.rb
@@ -0,0 +1,5 @@
+class ContentObjectStore::ContentBlockDocument < ApplicationRecord
+  has_many :content_block_editions,
+           -> { order(created_at: :asc, id: :asc) },
+           inverse_of: :content_block_document
+end
diff --git a/lib/engines/content_object_store/app/models/content_object_store/content_block_edition.rb b/lib/engines/content_object_store/app/models/content_object_store/content_block_edition.rb
new file mode 100644
index 00000000000..edff743b7a7
--- /dev/null
+++ b/lib/engines/content_object_store/app/models/content_object_store/content_block_edition.rb
@@ -0,0 +1,2 @@
+class ContentObjectStore::ContentBlockEdition < ApplicationRecord
+end
diff --git a/lib/engines/content_object_store/test/factories/content_block_document.rb b/lib/engines/content_object_store/test/factories/content_block_document.rb
new file mode 100644
index 00000000000..428c1be3fe8
--- /dev/null
+++ b/lib/engines/content_object_store/test/factories/content_block_document.rb
@@ -0,0 +1,9 @@
+FactoryBot.define do
+  factory :content_block_document, class: "ContentObjectStore::ContentBlockDocument" do
+    sequence(:content_id) { SecureRandom.uuid }
+    title { "Title" }
+    block_type { "Type" }
+    created_at { Time.zone.now.utc }
+    updated_at { Time.zone.now.utc }
+  end
+end
diff --git a/lib/engines/content_object_store/test/factories/content_block_edition.rb b/lib/engines/content_object_store/test/factories/content_block_edition.rb
new file mode 100644
index 00000000000..fbc54a609c3
--- /dev/null
+++ b/lib/engines/content_object_store/test/factories/content_block_edition.rb
@@ -0,0 +1,7 @@
+FactoryBot.define do
+  factory :content_block_edition, class: "ContentObjectStore::ContentBlockEdition" do
+    details { "{}" }
+    created_at { Time.zone.now.utc }
+    updated_at { Time.zone.now.utc }
+  end
+end
diff --git a/lib/engines/content_object_store/test/unit/app/models/content_block_document_test.rb b/lib/engines/content_object_store/test/unit/app/models/content_block_document_test.rb
new file mode 100644
index 00000000000..f43513c504c
--- /dev/null
+++ b/lib/engines/content_object_store/test/unit/app/models/content_block_document_test.rb
@@ -0,0 +1,20 @@
+require "test_helper"
+
+class ContentObjectStore::ContentBlockDocumentTest < ActiveSupport::TestCase
+  test "content_block_document exists with required data" do
+    content_block_document = create(
+      :content_block_document,
+      content_id: "52084b2d-4a52-4e69-ba91-3052b07c7eb6",
+      title: "Title",
+      block_type: "Type",
+      created_at: Time.zone.local(2000, 12, 31, 23, 59, 59).utc,
+      updated_at: Time.zone.local(2000, 12, 31, 23, 59, 59).utc,
+    )
+
+    assert_equal "52084b2d-4a52-4e69-ba91-3052b07c7eb6", content_block_document.content_id
+    assert_equal "Title", content_block_document.title
+    assert_equal "Type", content_block_document.block_type
+    assert_equal Time.zone.local(2000, 12, 31, 23, 59, 59).utc, content_block_document.created_at
+    assert_equal Time.zone.local(2000, 12, 31, 23, 59, 59).utc, content_block_document.updated_at
+  end
+end
diff --git a/lib/engines/content_object_store/test/unit/app/models/content_block_edition_test.rb b/lib/engines/content_object_store/test/unit/app/models/content_block_edition_test.rb
new file mode 100644
index 00000000000..d093c066704
--- /dev/null
+++ b/lib/engines/content_object_store/test/unit/app/models/content_block_edition_test.rb
@@ -0,0 +1,18 @@
+require "test_helper"
+
+class ContentObjectStore::ContentBlockEditionTest < ActiveSupport::TestCase
+  test "content_block_edition exists with required data" do
+    content_block_document = create(:content_block_document)
+    content_block_edition = create(
+      :content_block_edition,
+      content_block_document_id: content_block_document.id,
+      created_at: Time.zone.local(2000, 12, 31, 23, 59, 59).utc,
+      updated_at: Time.zone.local(2000, 12, 31, 23, 59, 59).utc,
+      details: '{ "some_field": "some_content" }',
+    )
+
+    assert_equal Time.zone.local(2000, 12, 31, 23, 59, 59).utc, content_block_edition.created_at
+    assert_equal Time.zone.local(2000, 12, 31, 23, 59, 59).utc, content_block_edition.updated_at
+    assert_equal '{ "some_field": "some_content" }', content_block_edition.details
+  end
+end