diff --git a/app/controllers/activities_controller.rb b/app/controllers/activities_controller.rb
index eb0b1c09b..0e050a065 100644
--- a/app/controllers/activities_controller.rb
+++ b/app/controllers/activities_controller.rb
@@ -2,7 +2,6 @@ class ActivitiesController < ApplicationController
   include Countable
 
   before_action :set_activity, only: [:show]
-  before_action :set_include
 
   def index
     sort = case params[:sort]
@@ -19,7 +18,11 @@ def index
     elsif params[:ids].present?
       response = Activity.find_by_id(params[:ids], page: page, sort: sort)
     else
-      response = Activity.query(params[:query], uid: params[:doi_id], page: page, sort: sort, scroll_id: params[:scroll_id])
+      response = Activity.query(params[:query],
+        uid: params[:doi_id] || params[:provider_id] || params[:client_id] || params[:repository_id], 
+        page: page, 
+        sort: sort, 
+        scroll_id: params[:scroll_id])
     end
 
     begin
@@ -91,15 +94,6 @@ def show
 
   protected
 
-  def set_include
-    if params[:include].present?
-      @include = params[:include].split(",").map { |i| i.downcase.underscore.to_sym }
-      @include = @include & [:doi]
-    else
-      @include = [:doi]
-    end
-  end
-
   def set_activity
     response = Activity.find_by_id(params[:id])
     @activity = response.results.first
diff --git a/app/models/activity.rb b/app/models/activity.rb
index eed450b42..1fbb763e3 100644
--- a/app/models/activity.rb
+++ b/app/models/activity.rb
@@ -8,7 +8,7 @@ class Activity < Audited::Audit
   alias_attribute :doi_id, :uid
   alias_attribute :changes, :audited_changes
 
-  belongs_to :doi, foreign_key: :auditable_id
+  belongs_to :auditable, polymorphic: true
 
   def after_audit
     IndexJob.perform_later(self)
@@ -20,161 +20,23 @@ def after_audit
   mapping dynamic: 'false' do
     indexes :id,                             type: :keyword
     indexes :auditable_id,                   type: :keyword
-    indexes :doi_id,                         type: :keyword
     indexes :uid,                            type: :keyword
     indexes :auditable_type,                 type: :keyword
     indexes :username,                       type: :keyword
     indexes :action,                         type: :keyword
     indexes :version,                        type: :keyword
     indexes :request_uuid,                   type: :keyword
-    indexes :changes,                        type: :object, properties: {
-      doi: { type: :keyword },
-      url: { type: :text, fields: { keyword: { type: "keyword" }}},
-      creators: { type: :object, properties: {
-        nameType: { type: :keyword },
-        nameIdentifiers: { type: :object, properties: {
-          nameIdentifier: { type: :keyword },
-          nameIdentifierScheme: { type: :keyword },
-          schemeUri: { type: :keyword }
-        }},
-        name: { type: :text },
-        givenName: { type: :text },
-        familyName: { type: :text },
-        affiliation: { type: :object, properties: {
-          name: { type: :keyword },
-          affiliationIdentifier: { type: :keyword },
-          affiliationIdentifierScheme: { type: :keyword },
-          schemeUri: { type: :keyword }
-        }},
-      }},
-      contributors: { type: :object, properties: {
-        nameType: { type: :keyword },
-        nameIdentifiers: { type: :object, properties: {
-          nameIdentifier: { type: :keyword },
-          nameIdentifierScheme: { type: :keyword },
-          schemeUri: { type: :keyword }
-        }},
-        name: { type: :text },
-        givenName: { type: :text },
-        familyName: { type: :text },
-        affiliation: { type: :object, properties: {
-          name: { type: :keyword },
-          affiliationIdentifier: { type: :keyword },
-          affiliationIdentifierScheme: { type: :keyword },
-          schemeUri: { type: :keyword }
-        }},
-        contributorType: { type: :keyword }
-      }},
-      titles: { type: :object, properties: {
-        title: { type: :text, fields: { keyword: { type: "keyword" }}},
-        titleType: { type: :keyword },
-        lang: { type: :keyword }
-      }},
-      descriptions: { type: :object, properties: {
-        description: { type: :text },
-        descriptionType: { type: :keyword },
-        lang: { type: :keyword }
-      }},
-      publisher: { type: :text, fields: { keyword: { type: "keyword" }}},
-      publication_year: { type: :date, format: "yyyy", ignore_malformed: true },
-      client_id: { type: :keyword },
-      provider_id: { type: :keyword },
-      identifiers: { type: :object, properties: {
-        identifierType: { type: :keyword },
-        identifier: { type: :keyword }
-      }},
-      related_identifiers: { type: :object, properties: {
-        relatedIdentifierType: { type: :keyword },
-        relatedIdentifier: { type: :keyword },
-        relationType: { type: :keyword },
-        relatedMetadataScheme: { type: :keyword },
-        schemeUri: { type: :keyword },
-        schemeType: { type: :keyword },
-        resourceTypeGeneral: { type: :keyword }
-      }},
-      types: { type: :object, properties: {
-        resourceTypeGeneral: { type: :keyword },
-        resourceType: { type: :keyword },
-        schemaOrg: { type: :keyword },
-        bibtex: { type: :keyword },
-        citeproc: { type: :keyword },
-        ris: { type: :keyword }
-      }},
-      funding_references: { type: :object, properties: {
-        funderName: { type: :keyword },
-        funderIdentifier: { type: :keyword },
-        funderIdentifierType: { type: :keyword },
-        awardNumber: { type: :keyword },
-        awardUri: { type: :keyword },
-        awardTitle: { type: :keyword }
-      }},
-      dates: { type: :object, properties: {
-        date: { type: :text },
-        dateType: { type: :keyword }
-      }},
-      geo_locations: { type: :object, properties: {
-        geoLocationPoint: { type: :object },
-        geoLocationBox: { type: :object },
-        geoLocationPlace: { type: :keyword }
-      }},
-      rights_list: { type: :object, properties: {
-        rights: { type: :keyword },
-        rightsUri: { type: :keyword },
-        lang: { type: :keyword },
-      }},
-      subjects: { type: :object, properties: {
-        subject: { type: :keyword },
-        subjectScheme: { type: :keyword },
-        schemeUri: { type: :keyword },
-        valueUri: { type: :keyword },
-        lang: { type: :keyword },
-      }},
-      container: { type: :object, properties: {
-        type: { type: :keyword },
-        identifier: { type: :keyword },
-        identifierType: { type: :keyword },
-        title: { type: :keyword },
-        volume: { type: :keyword },
-        issue: { type: :keyword },
-        firstPage: { type: :keyword },
-        lastPage: { type: :keyword },
-      }},
-      content_url: { type: :keyword },
-      version_info: { type: :keyword },
-      formats: { type: :keyword },
-      sizes: { type: :keyword },
-      language: { type: :keyword },
-      aasm_state: { type: :keyword },
-      schema_version: { type: :keyword },
-      metadata_version: { type: :keyword },
-      source: { type: :keyword },
-      landing_page: { type: :object, properties: {
-        checked: { type: :date, ignore_malformed: true },
-        url: { type: :text, fields: { keyword: { type: "keyword" }}},
-        status: { type: :integer },
-        contentType: { type: :keyword },
-        error: { type: :keyword },
-        redirectCount: { type: :integer },
-        redirectUrls: { type: :keyword },
-        downloadLatency: { type: :scaled_float, scaling_factor: 100 },
-        hasSchemaOrg: { type: :boolean },
-        schemaOrgId: { type: :keyword },
-        dcIdentifier: { type: :keyword },
-        citationDoi: { type: :keyword },
-        bodyHasPid: { type: :boolean }
-      }}
-    }
+    indexes :changes,                        type: :object
     indexes :created,                        type: :date, ignore_malformed: true
 
     # include parent objects
-    indexes :doi,                            type: :object
+    #indexes :doi,                            type: :object
   end
 
   def as_indexed_json(options={})
     {
       "id" => id,
       "auditable_id" => auditable_id,
-      "doi_id" => doi_id,
       "uid" => uid,
       "auditable_type" => auditable_type,
       "username" => username,
@@ -182,8 +44,10 @@ def as_indexed_json(options={})
       "version" => version,
       "request_uuid" => request_uuid,
       "changes" => changes,
-      "created" => created,
-      "doi" => doi.present? ? doi.as_indexed_json : nil
+      "was_derived_from" => was_derived_from,
+      "was_attributed_to" => was_attributed_to,
+      "was_generated_by" => was_generated_by,
+      "created" => created
     }
   end
 
@@ -322,6 +186,31 @@ def self.convert_affiliation_by_id(options={})
   end
 
   def uid
-    doi.present? ? doi.uid : changes.to_h['doi']
+    auditable.uid
+  end
+
+  def url
+    Rails.env.production? ? "https://api.datacite.org" : "https://api.test.datacite.org"
+  end
+
+  def was_derived_from
+    if auditable_type == "Doi"
+      handle_url = Rails.env.production? ? "https://doi.org/" : "https://handle.test.datacite.org/"
+      handle_url + uid
+    elsif auditable_type == "Provider"
+      url + "/providers/" + uid
+    elsif auditable_type == "Client"
+      url + "/repositories/" + uid
+    end
+  end
+
+  def was_attributed_to
+    if username.present?
+      username.include?(".") ? url + "/repositories/" + username : url + "/providers/" + username
+    end
+  end
+
+  def was_generated_by
+    url + "/activities/" + request_uuid
   end
 end
diff --git a/app/models/client.rb b/app/models/client.rb
index 19327b459..ebdd82408 100644
--- a/app/models/client.rb
+++ b/app/models/client.rb
@@ -1,4 +1,5 @@
 class Client < ActiveRecord::Base
+  audited except: [:globus_uuid, :salesforce_id, :password, :updated, :comments, :experiments, :version, :doi_quota_allowed, :doi_quota_used]
 
   # include helper module for caching infrequently changing resources
   include Cacheable
@@ -56,6 +57,7 @@ class Client < ActiveRecord::Base
   has_many :client_prefixes, foreign_key: :datacentre, dependent: :destroy
   has_many :prefixes, through: :client_prefixes
   has_many :provider_prefixes, through: :client_prefixes
+  has_many :activities, as: :auditable, dependent: :destroy
 
   before_validation :set_defaults
   before_create { self.created = Time.zone.now.utc.iso8601 }
diff --git a/app/models/doi.rb b/app/models/doi.rb
index 77e863229..66b0d25ee 100644
--- a/app/models/doi.rb
+++ b/app/models/doi.rb
@@ -80,7 +80,7 @@ class Doi < ActiveRecord::Base
   # has_many :part_of_events, -> { where target_relation_type_id: "part_of" }, class_name: "Event", primary_key: :doi, foreign_key: :target_doi, dependent: :destroy
   # has_many :version_events, -> { where source_relation_type_id: "versions" }, class_name: "Event", primary_key: :doi, foreign_key: :source_doi, dependent: :destroy
   # has_many :version_of_events, -> { where target_relation_type_id: "version_of" }, class_name: "Event", primary_key: :doi, foreign_key: :target_doi, dependent: :destroy
-  has_many :activities, foreign_key: :auditable_id, dependent: :destroy
+  has_many :activities, as: :auditable, dependent: :destroy
   # has_many :source_events, class_name: "Event", primary_key: :doi, foreign_key: :source_doi, dependent: :destroy
   # has_many :target_events, class_name: "Event", primary_key: :doi, foreign_key: :target_doi, dependent: :destroy
   
diff --git a/app/models/provider.rb b/app/models/provider.rb
index 7057b311a..b0a961196 100644
--- a/app/models/provider.rb
+++ b/app/models/provider.rb
@@ -1,6 +1,8 @@
 require "countries"
 
 class Provider < ActiveRecord::Base
+  audited except: [:globus_uuid, :salesforce_id, :password, :updated, :experiments, :comments, :logo, :version, :doi_quota_allowed, :doi_quota_used]
+
   # include helper module for caching infrequently changing resources
   include Cacheable
 
@@ -72,6 +74,7 @@ class Provider < ActiveRecord::Base
   has_many :prefixes, through: :provider_prefixes
   has_many :consortium_organizations, class_name: "Provider", primary_key: "symbol", foreign_key: "consortium_id", inverse_of: :consortium
   belongs_to :consortium, class_name: "Provider", primary_key: "symbol", foreign_key: "consortium_id", inverse_of: :consortium_organizations, optional: true
+  has_many :activities, as: :auditable, dependent: :destroy
 
   before_validation :set_region, :set_defaults
   before_create { self.created = Time.zone.now.utc.iso8601 }
diff --git a/app/serializers/activity_serializer.rb b/app/serializers/activity_serializer.rb
index 90c6ebaed..d423f5621 100644
--- a/app/serializers/activity_serializer.rb
+++ b/app/serializers/activity_serializer.rb
@@ -6,23 +6,16 @@ class ActivitySerializer
   
   attributes "prov:wasGeneratedBy", "prov:generatedAtTime", "prov:wasDerivedFrom", "prov:wasAttributedTo", :action, :version, :changes
 
-  belongs_to :doi, record_type: :dois
-
   attribute "prov:wasDerivedFrom" do |object|
-    url = Rails.env.production? ? "https://doi.org/" : "https://handle.test.datacite.org/"
-    url + object.uid
+    object.was_derived_from
   end
 
   attribute "prov:wasAttributedTo" do |object|
-    if object.username.present?
-      url = Rails.env.production? ? "https://api.datacite.org" : "https://api.test.datacite.org"
-      object.username.include?(".") ? url + "/clients/" + object.username : url + "/providers/" + object.username
-    end
+    object.was_attributed_to
   end
 
   attribute "prov:wasGeneratedBy" do |object|
-    url = Rails.env.production? ? "https://api.datacite.org" : "https://api.test.datacite.org"
-    "#{url}/activities/#{object.request_uuid}"
+    object.was_generated_by
   end
 
   attribute "prov:generatedAtTime" do |object|
diff --git a/config/routes.rb b/config/routes.rb
index d213cfa8f..4b5dcffac 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -72,11 +72,13 @@
   resources :clients, constraints: { id: /.+/ } do
     resources :prefixes, constraints: { id: /.+/ }
     resources :dois, constraints: { id: /.+/ }
+    resources :activities
   end
 
   resources :repositories, constraints: { id: /.+/ } do
     resources :prefixes, constraints: { id: /.+/ }
     resources :dois, constraints: { id: /.+/ }
+    resources :activities
   end
 
   resources :client_prefixes, path: "client-prefixes"
@@ -104,6 +106,7 @@
     resources :organizations, constraints: { :id => /.+/ }, shallow: true
     resources :dois, constraints: { :id => /.+/ }
     resources :prefixes, constraints: { :id => /.+/ }
+    resources :activities
   end
   resources :providers, constraints: { :id => /.+/ }
   resources :repository_prefixes, path: "repository-prefixes"
diff --git a/db/migrate/20190302161113_install_audited.rb b/db/migrate/20190302161113_install_audited.rb
index 00d8dd304..504935816 100644
--- a/db/migrate/20190302161113_install_audited.rb
+++ b/db/migrate/20190302161113_install_audited.rb
@@ -2,21 +2,23 @@
 
 class InstallAudited < ActiveRecord::Migration[5.2]
   def self.up
-    create_table :audits, force: true do |t|
-      t.column :auditable_id, :integer
-      t.column :auditable_type, :string
-      t.column :associated_id, :integer
-      t.column :associated_type, :string
-      t.column :user_id, :integer
-      t.column :user_type, :string
-      t.column :username, :string
-      t.column :action, :string
-      t.column :audited_changes, :json
-      t.column :version, :integer, default: 0
-      t.column :comment, :string
-      t.column :remote_address, :string
-      t.column :request_uuid, :string
-      t.column :created_at, :datetime, limit: 3
+    safety_assured do
+      create_table :audits, force: true do |t|
+        t.column :auditable_id, :integer
+        t.column :auditable_type, :string
+        t.column :associated_id, :integer
+        t.column :associated_type, :string
+        t.column :user_id, :integer
+        t.column :user_type, :string
+        t.column :username, :string
+        t.column :action, :string
+        t.column :audited_changes, :json
+        t.column :version, :integer, default: 0
+        t.column :comment, :string
+        t.column :remote_address, :string
+        t.column :request_uuid, :string
+        t.column :created_at, :datetime, limit: 3
+      end
     end
 
     add_index :audits, [:auditable_type, :auditable_id, :version], name: "auditable_index"
@@ -27,6 +29,8 @@ def self.up
   end
 
   def self.down
-    drop_table :audits
+    safety_assured do
+      drop_table :audits
+    end
   end
 end
diff --git a/spec/factories/default.rb b/spec/factories/default.rb
index 9ab62ef75..e8063a818 100644
--- a/spec/factories/default.rb
+++ b/spec/factories/default.rb
@@ -311,7 +311,7 @@
   end
 
   factory :activity do  
-    association :doi, factory: :doi, strategy: :create
+    association :auditable, factory: :doi, strategy: :create
   end
 
   factory :event do
diff --git a/spec/models/activity_spec.rb b/spec/models/activity_spec.rb
index 6b9464786..5e17bcd3c 100644
--- a/spec/models/activity_spec.rb
+++ b/spec/models/activity_spec.rb
@@ -8,7 +8,7 @@
     it "activity exists" do
       expect(doi.activities.length).to eq(1)
       activity = doi.activities.first
-      expect(activity.uid).to eq(doi.uid)
+      expect(activity.auditable.uid).to eq(doi.uid)
       # expect(activity.username).to eq(2)
       expect(activity.request_uuid).to be_present
       expect(activity.changes["aasm_state"]).to eq("draft")
@@ -25,10 +25,68 @@
 
       expect(doi.activities.length).to eq(2)
       activity = doi.activities.last
-      expect(activity.uid).to eq(doi.uid)
+      expect(activity.auditable.uid).to eq(doi.uid)
       # expect(activity.username).to eq(2)
       expect(activity.request_uuid).to be_present
       expect(activity.changes).to eq("aasm_state"=>["draft", "findable"])
     end
   end
+
+  context "create provider" do
+    let(:provider)  { create(:provider) }
+
+    it "activity exists" do
+      expect(provider.activities.length).to eq(1)
+      activity = provider.activities.first
+      expect(activity.auditable.uid).to eq(provider.uid)
+
+      expect(activity.request_uuid).to be_present
+      expect(activity.changes["non_profit_status"]).to eq("non-profit")
+      expect(activity.changes["display_name"]).to eq("My provider")
+    end
+  end
+
+  context "update provider" do
+    let(:provider)  { create(:provider) }
+
+    it "activity exists" do
+      provider.update(non_profit_status: "for-profit")
+
+      expect(provider.activities.length).to eq(2)
+      activity = provider.activities.last
+      expect(activity.auditable.uid).to eq(provider.uid)
+
+      expect(activity.request_uuid).to be_present
+      expect(activity.changes).to eq("non_profit_status" => ["non-profit", "for-profit"])
+    end
+  end
+
+  context "create client" do
+    let(:client)  { create(:client) }
+
+    it "activity exists" do
+      expect(client.activities.length).to eq(1)
+      activity = client.activities.first
+      expect(activity.auditable.uid).to eq(client.uid)
+
+      expect(activity.request_uuid).to be_present
+      expect(activity.changes["client_type"]).to eq("repository")
+      expect(activity.changes["name"]).to eq("My data center")
+    end
+  end
+
+  context "update client" do
+    let(:client)  { create(:client) }
+
+    it "activity exists" do
+      client.update(client_type: "periodical")
+
+      expect(client.activities.length).to eq(2)
+      activity = client.activities.last
+      expect(activity.auditable.uid).to eq(client.uid)
+
+      expect(activity.request_uuid).to be_present
+      expect(activity.changes).to eq("client_type" => ["repository", "periodical"])
+    end
+  end
 end
diff --git a/spec/models/provider_spec.rb b/spec/models/provider_spec.rb
index 68af72a13..f4574acc8 100644
--- a/spec/models/provider_spec.rb
+++ b/spec/models/provider_spec.rb
@@ -203,4 +203,16 @@
       expect(provider.cumulative_years).to eq([])
     end
   end
+
+  describe "activities" do
+    subject { build(:provider) }
+
+    it "is valid" do
+      expect(subject.save).to be true
+      expect(subject.errors.details).to be_empty
+      expect(subject.activities.length).to eq(1)
+      activity = subject.activities.first
+      expect(activity.changes["non_profit_status"]).to eq("non-profit")
+    end
+  end
 end