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-rw-r--r--app/javascript/mastodon/actions/search.js1
-rw-r--r--app/javascript/mastodon/features/account/components/header.js10
-rw-r--r--app/javascript/mastodon/features/account_timeline/index.js22
-rw-r--r--app/javascript/mastodon/features/direct_timeline/components/column_settings.js35
-rw-r--r--app/javascript/mastodon/features/direct_timeline/containers/column_settings_container.js17
-rw-r--r--app/javascript/mastodon/features/followers/index.js8
-rw-r--r--app/javascript/mastodon/features/following/index.js8
-rw-r--r--app/javascript/mastodon/locales/co.json6
-rw-r--r--app/javascript/mastodon/locales/cs.json2
-rw-r--r--app/javascript/mastodon/locales/fa.json2
-rw-r--r--app/javascript/mastodon/locales/ko.json2
-rw-r--r--app/javascript/styles/mastodon/components.scss1
-rw-r--r--app/javascript/styles/mastodon/stream_entries.scss6
-rw-r--r--app/javascript/styles/mastodon/widgets.scss1
-rw-r--r--app/lib/activitypub/adapter.rb1
-rw-r--r--app/lib/proof_provider/keybase.rb3
-rw-r--r--app/serializers/activitypub/actor_serializer.rb24
-rw-r--r--app/services/activitypub/process_account_service.rb28
18 files changed, 95 insertions, 82 deletions
diff --git a/app/javascript/mastodon/actions/search.js b/app/javascript/mastodon/actions/search.js
index b670d25c3..7c06670eb 100644
--- a/app/javascript/mastodon/actions/search.js
+++ b/app/javascript/mastodon/actions/search.js
@@ -37,6 +37,7 @@ export function submitSearch() {
       params: {
         q: value,
         resolve: true,
+        limit: 5,
       },
     }).then(response => {
       if (response.data.accounts) {
diff --git a/app/javascript/mastodon/features/account/components/header.js b/app/javascript/mastodon/features/account/components/header.js
index 76f50a5a4..f21ba8a9c 100644
--- a/app/javascript/mastodon/features/account/components/header.js
+++ b/app/javascript/mastodon/features/account/components/header.js
@@ -94,15 +94,15 @@ class Header extends ImmutablePureComponent {
     let menu        = [];
 
     if (me !== account.get('id') && account.getIn(['relationship', 'followed_by'])) {
-      info.push(<span className='relationship-tag'><FormattedMessage id='account.follows_you' defaultMessage='Follows you' /></span>);
+      info.push(<span key='followed_by' className='relationship-tag'><FormattedMessage id='account.follows_you' defaultMessage='Follows you' /></span>);
     } else if (me !== account.get('id') && account.getIn(['relationship', 'blocking'])) {
-      info.push(<span className='relationship-tag'><FormattedMessage id='account.blocked' defaultMessage='Blocked' /></span>);
+      info.push(<span key='blocked' className='relationship-tag'><FormattedMessage id='account.blocked' defaultMessage='Blocked' /></span>);
     }
 
     if (me !== account.get('id') && account.getIn(['relationship', 'muting'])) {
-      info.push(<span className='relationship-tag'><FormattedMessage id='account.muted' defaultMessage='Muted' /></span>);
+      info.push(<span key='muted' className='relationship-tag'><FormattedMessage id='account.muted' defaultMessage='Muted' /></span>);
     } else if (me !== account.get('id') && account.getIn(['relationship', 'domain_blocking'])) {
-      info.push(<span className='relationship-tag'><FormattedMessage id='account.domain_blocked' defaultMessage='Domain hidden' /></span>);
+      info.push(<span key='domain_blocked' className='relationship-tag'><FormattedMessage id='account.domain_blocked' defaultMessage='Domain hidden' /></span>);
     }
 
     if (me !== account.get('id')) {
@@ -111,7 +111,7 @@ class Header extends ImmutablePureComponent {
       } else if (account.getIn(['relationship', 'requested'])) {
         actionBtn = <Button className='logo-button' text={intl.formatMessage(messages.requested)} onClick={this.props.onFollow} />;
       } else if (!account.getIn(['relationship', 'blocking'])) {
-        actionBtn = <Button className={classNames('logo-button', { 'button--destructive': account.getIn(['relationship', 'following']) })} text={intl.formatMessage(account.getIn(['relationship', 'following']) ? messages.unfollow : messages.follow)} onClick={this.props.onFollow} />;
+        actionBtn = <Button disabled={account.getIn(['relationship', 'blocked_by'])} className={classNames('logo-button', { 'button--destructive': account.getIn(['relationship', 'following']) })} text={intl.formatMessage(account.getIn(['relationship', 'following']) ? messages.unfollow : messages.follow)} onClick={this.props.onFollow} />;
       } else if (account.getIn(['relationship', 'blocking'])) {
         actionBtn = <Button className='logo-button' text={intl.formatMessage(messages.unblock, { name: account.get('username') })} onClick={this.props.onBlock} />;
       }
diff --git a/app/javascript/mastodon/features/account_timeline/index.js b/app/javascript/mastodon/features/account_timeline/index.js
index 883f40d77..71341debb 100644
--- a/app/javascript/mastodon/features/account_timeline/index.js
+++ b/app/javascript/mastodon/features/account_timeline/index.js
@@ -14,14 +14,17 @@ import ImmutablePureComponent from 'react-immutable-pure-component';
 import { FormattedMessage } from 'react-intl';
 import { fetchAccountIdentityProofs } from '../../actions/identity_proofs';
 
+const emptyList = ImmutableList();
+
 const mapStateToProps = (state, { params: { accountId }, withReplies = false }) => {
   const path = withReplies ? `${accountId}:with_replies` : accountId;
 
   return {
-    statusIds: state.getIn(['timelines', `account:${path}`, 'items'], ImmutableList()),
-    featuredStatusIds: withReplies ? ImmutableList() : state.getIn(['timelines', `account:${accountId}:pinned`, 'items'], ImmutableList()),
+    statusIds: state.getIn(['timelines', `account:${path}`, 'items'], emptyList),
+    featuredStatusIds: withReplies ? ImmutableList() : state.getIn(['timelines', `account:${accountId}:pinned`, 'items'], emptyList),
     isLoading: state.getIn(['timelines', `account:${path}`, 'isLoading']),
-    hasMore:   state.getIn(['timelines', `account:${path}`, 'hasMore']),
+    hasMore: state.getIn(['timelines', `account:${path}`, 'hasMore']),
+    blockedBy: state.getIn(['relationships', accountId, 'blocked_by'], false),
   };
 };
 
@@ -37,6 +40,7 @@ class AccountTimeline extends ImmutablePureComponent {
     isLoading: PropTypes.bool,
     hasMore: PropTypes.bool,
     withReplies: PropTypes.bool,
+    blockedBy: PropTypes.bool,
   };
 
   componentWillMount () {
@@ -44,9 +48,11 @@ class AccountTimeline extends ImmutablePureComponent {
 
     this.props.dispatch(fetchAccount(accountId));
     this.props.dispatch(fetchAccountIdentityProofs(accountId));
+
     if (!withReplies) {
       this.props.dispatch(expandAccountFeaturedTimeline(accountId));
     }
+
     this.props.dispatch(expandAccountTimeline(accountId, { withReplies }));
   }
 
@@ -54,9 +60,11 @@ class AccountTimeline extends ImmutablePureComponent {
     if ((nextProps.params.accountId !== this.props.params.accountId && nextProps.params.accountId) || nextProps.withReplies !== this.props.withReplies) {
       this.props.dispatch(fetchAccount(nextProps.params.accountId));
       this.props.dispatch(fetchAccountIdentityProofs(nextProps.params.accountId));
+
       if (!nextProps.withReplies) {
         this.props.dispatch(expandAccountFeaturedTimeline(nextProps.params.accountId));
       }
+
       this.props.dispatch(expandAccountTimeline(nextProps.params.accountId, { withReplies: nextProps.params.withReplies }));
     }
   }
@@ -66,7 +74,7 @@ class AccountTimeline extends ImmutablePureComponent {
   }
 
   render () {
-    const { shouldUpdateScroll, statusIds, featuredStatusIds, isLoading, hasMore } = this.props;
+    const { shouldUpdateScroll, statusIds, featuredStatusIds, isLoading, hasMore, blockedBy } = this.props;
 
     if (!statusIds && isLoading) {
       return (
@@ -76,6 +84,8 @@ class AccountTimeline extends ImmutablePureComponent {
       );
     }
 
+    const emptyMessage = blockedBy ? <FormattedMessage id='empty_column.account_timeline_blocked' defaultMessage='You are blocked' /> : <FormattedMessage id='empty_column.account_timeline' defaultMessage='No toots here!' />;
+
     return (
       <Column>
         <ColumnBackButton />
@@ -84,13 +94,13 @@ class AccountTimeline extends ImmutablePureComponent {
           prepend={<HeaderContainer accountId={this.props.params.accountId} />}
           alwaysPrepend
           scrollKey='account_timeline'
-          statusIds={statusIds}
+          statusIds={blockedBy ? emptyList : statusIds}
           featuredStatusIds={featuredStatusIds}
           isLoading={isLoading}
           hasMore={hasMore}
           onLoadMore={this.handleLoadMore}
           shouldUpdateScroll={shouldUpdateScroll}
-          emptyMessage={<FormattedMessage id='empty_column.account_timeline' defaultMessage='No toots here!' />}
+          emptyMessage={emptyMessage}
         />
       </Column>
     );
diff --git a/app/javascript/mastodon/features/direct_timeline/components/column_settings.js b/app/javascript/mastodon/features/direct_timeline/components/column_settings.js
deleted file mode 100644
index b629c128d..000000000
--- a/app/javascript/mastodon/features/direct_timeline/components/column_settings.js
+++ /dev/null
@@ -1,35 +0,0 @@
-import React from 'react';
-import PropTypes from 'prop-types';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
-import SettingText from '../../../components/setting_text';
-
-const messages = defineMessages({
-  filter_regex: { id: 'home.column_settings.filter_regex', defaultMessage: 'Filter out by regular expressions' },
-  settings: { id: 'home.settings', defaultMessage: 'Column settings' },
-});
-
-export default @injectIntl
-class ColumnSettings extends React.PureComponent {
-
-  static propTypes = {
-    settings: ImmutablePropTypes.map.isRequired,
-    onChange: PropTypes.func.isRequired,
-    intl: PropTypes.object.isRequired,
-  };
-
-  render () {
-    const { settings, onChange, intl } = this.props;
-
-    return (
-      <div>
-        <span className='column-settings__section'><FormattedMessage id='home.column_settings.advanced' defaultMessage='Advanced' /></span>
-
-        <div className='column-settings__row'>
-          <SettingText settings={settings} settingKey={['regex', 'body']} onChange={onChange} label={intl.formatMessage(messages.filter_regex)} />
-        </div>
-      </div>
-    );
-  }
-
-}
diff --git a/app/javascript/mastodon/features/direct_timeline/containers/column_settings_container.js b/app/javascript/mastodon/features/direct_timeline/containers/column_settings_container.js
deleted file mode 100644
index 38054ce9e..000000000
--- a/app/javascript/mastodon/features/direct_timeline/containers/column_settings_container.js
+++ /dev/null
@@ -1,17 +0,0 @@
-import { connect } from 'react-redux';
-import ColumnSettings from '../components/column_settings';
-import { changeSetting } from '../../../actions/settings';
-
-const mapStateToProps = state => ({
-  settings: state.getIn(['settings', 'direct']),
-});
-
-const mapDispatchToProps = dispatch => ({
-
-  onChange (key, checked) {
-    dispatch(changeSetting(['direct', ...key], checked));
-  },
-
-});
-
-export default connect(mapStateToProps, mapDispatchToProps)(ColumnSettings);
diff --git a/app/javascript/mastodon/features/followers/index.js b/app/javascript/mastodon/features/followers/index.js
index ce56f270c..167f61b31 100644
--- a/app/javascript/mastodon/features/followers/index.js
+++ b/app/javascript/mastodon/features/followers/index.js
@@ -20,6 +20,7 @@ import ScrollableList from '../../components/scrollable_list';
 const mapStateToProps = (state, props) => ({
   accountIds: state.getIn(['user_lists', 'followers', props.params.accountId, 'items']),
   hasMore: !!state.getIn(['user_lists', 'followers', props.params.accountId, 'next']),
+  blockedBy: state.getIn(['relationships', props.params.accountId, 'blocked_by'], false),
 });
 
 export default @connect(mapStateToProps)
@@ -31,6 +32,7 @@ class Followers extends ImmutablePureComponent {
     shouldUpdateScroll: PropTypes.func,
     accountIds: ImmutablePropTypes.list,
     hasMore: PropTypes.bool,
+    blockedBy: PropTypes.bool,
   };
 
   componentWillMount () {
@@ -50,7 +52,7 @@ class Followers extends ImmutablePureComponent {
   }, 300, { leading: true });
 
   render () {
-    const { shouldUpdateScroll, accountIds, hasMore } = this.props;
+    const { shouldUpdateScroll, accountIds, hasMore, blockedBy } = this.props;
 
     if (!accountIds) {
       return (
@@ -60,7 +62,7 @@ class Followers extends ImmutablePureComponent {
       );
     }
 
-    const emptyMessage = <FormattedMessage id='account.followers.empty' defaultMessage='No one follows this user yet.' />;
+    const emptyMessage = blockedBy ? <FormattedMessage id='empty_column.account_timeline_blocked' defaultMessage='You are blocked' /> : <FormattedMessage id='account.followers.empty' defaultMessage='No one follows this user yet.' />;
 
     return (
       <Column>
@@ -75,7 +77,7 @@ class Followers extends ImmutablePureComponent {
           alwaysPrepend
           emptyMessage={emptyMessage}
         >
-          {accountIds.map(id =>
+          {blockedBy ? [] : accountIds.map(id =>
             <AccountContainer key={id} id={id} withNote={false} />
           )}
         </ScrollableList>
diff --git a/app/javascript/mastodon/features/following/index.js b/app/javascript/mastodon/features/following/index.js
index bda0438a0..87638e051 100644
--- a/app/javascript/mastodon/features/following/index.js
+++ b/app/javascript/mastodon/features/following/index.js
@@ -20,6 +20,7 @@ import ScrollableList from '../../components/scrollable_list';
 const mapStateToProps = (state, props) => ({
   accountIds: state.getIn(['user_lists', 'following', props.params.accountId, 'items']),
   hasMore: !!state.getIn(['user_lists', 'following', props.params.accountId, 'next']),
+  blockedBy: state.getIn(['relationships', props.params.accountId, 'blocked_by'], false),
 });
 
 export default @connect(mapStateToProps)
@@ -31,6 +32,7 @@ class Following extends ImmutablePureComponent {
     shouldUpdateScroll: PropTypes.func,
     accountIds: ImmutablePropTypes.list,
     hasMore: PropTypes.bool,
+    blockedBy: PropTypes.bool,
   };
 
   componentWillMount () {
@@ -50,7 +52,7 @@ class Following extends ImmutablePureComponent {
   }, 300, { leading: true });
 
   render () {
-    const { shouldUpdateScroll, accountIds, hasMore } = this.props;
+    const { shouldUpdateScroll, accountIds, hasMore, blockedBy } = this.props;
 
     if (!accountIds) {
       return (
@@ -60,7 +62,7 @@ class Following extends ImmutablePureComponent {
       );
     }
 
-    const emptyMessage = <FormattedMessage id='account.follows.empty' defaultMessage="This user doesn't follow anyone yet." />;
+    const emptyMessage = blockedBy ? <FormattedMessage id='empty_column.account_timeline_blocked' defaultMessage='You are blocked' /> : <FormattedMessage id='account.follows.empty' defaultMessage="This user doesn't follow anyone yet." />;
 
     return (
       <Column>
@@ -75,7 +77,7 @@ class Following extends ImmutablePureComponent {
           alwaysPrepend
           emptyMessage={emptyMessage}
         >
-          {accountIds.map(id =>
+          {blockedBy ? [] : accountIds.map(id =>
             <AccountContainer key={id} id={id} withNote={false} />
           )}
         </ScrollableList>
diff --git a/app/javascript/mastodon/locales/co.json b/app/javascript/mastodon/locales/co.json
index acc680c53..154feab98 100644
--- a/app/javascript/mastodon/locales/co.json
+++ b/app/javascript/mastodon/locales/co.json
@@ -83,7 +83,7 @@
   "compose_form.spoiler.unmarked": "Testu micca piattatu",
   "compose_form.spoiler_placeholder": "Scrive u vostr'avertimentu quì",
   "confirmation_modal.cancel": "Annullà",
-  "confirmations.block.block_and_report": "Block & Report",
+  "confirmations.block.block_and_report": "Bluccà è signalà",
   "confirmations.block.confirm": "Bluccà",
   "confirmations.block.message": "Site sicuru·a che vulete bluccà @{name}?",
   "confirmations.delete.confirm": "Toglie",
@@ -136,7 +136,7 @@
   "follow_request.reject": "Righjittà",
   "getting_started.developers": "Sviluppatori",
   "getting_started.directory": "Annuariu di i prufili",
-  "getting_started.documentation": "Documentation",
+  "getting_started.documentation": "Ducumentazione",
   "getting_started.heading": "Per principià",
   "getting_started.invite": "Invità ghjente",
   "getting_started.open_source_notice": "Mastodon ghjè un lugiziale liberu. Pudete cuntribuisce à u codice o a traduzione, o palisà un bug, nant'à GitHub: {github}.",
@@ -238,7 +238,7 @@
   "navigation_bar.lists": "Liste",
   "navigation_bar.logout": "Scunnettassi",
   "navigation_bar.mutes": "Utilizatori piattati",
-  "navigation_bar.personal": "Personal",
+  "navigation_bar.personal": "Persunale",
   "navigation_bar.pins": "Statuti puntarulati",
   "navigation_bar.preferences": "Preferenze",
   "navigation_bar.public_timeline": "Linea pubblica glubale",
diff --git a/app/javascript/mastodon/locales/cs.json b/app/javascript/mastodon/locales/cs.json
index 9115f5081..e711961e7 100644
--- a/app/javascript/mastodon/locales/cs.json
+++ b/app/javascript/mastodon/locales/cs.json
@@ -26,7 +26,7 @@
   "account.posts": "Tooty",
   "account.posts_with_replies": "Tooty a odpovědi",
   "account.report": "Nahlásit uživatele @{name}",
-  "account.requested": "Požadavek čeká na schválení. Kliknutím zrušíte požadavek o sledování",
+  "account.requested": "Čekám na schválení. Kliknutím zrušíte požadavek o sledování",
   "account.share": "Sdílet profil uživatele @{name}",
   "account.show_reblogs": "Zobrazit boosty od uživatele @{name}",
   "account.unblock": "Odblokovat uživatele @{name}",
diff --git a/app/javascript/mastodon/locales/fa.json b/app/javascript/mastodon/locales/fa.json
index 0bfafd222..91a27e366 100644
--- a/app/javascript/mastodon/locales/fa.json
+++ b/app/javascript/mastodon/locales/fa.json
@@ -83,7 +83,7 @@
   "compose_form.spoiler.unmarked": "نوشته پنهان نیست",
   "compose_form.spoiler_placeholder": "هشدار محتوا",
   "confirmation_modal.cancel": "بی‌خیال",
-  "confirmations.block.block_and_report": "Block & Report",
+  "confirmations.block.block_and_report": "مسدودسازی و گزارش",
   "confirmations.block.confirm": "مسدود کن",
   "confirmations.block.message": "آیا واقعاً می‌خواهید {name} را مسدود کنید؟",
   "confirmations.delete.confirm": "پاک کن",
diff --git a/app/javascript/mastodon/locales/ko.json b/app/javascript/mastodon/locales/ko.json
index 568359651..433592ffd 100644
--- a/app/javascript/mastodon/locales/ko.json
+++ b/app/javascript/mastodon/locales/ko.json
@@ -83,7 +83,7 @@
   "compose_form.spoiler.unmarked": "열람주의가 설정 되어 있지 않습니다",
   "compose_form.spoiler_placeholder": "경고",
   "confirmation_modal.cancel": "취소",
-  "confirmations.block.block_and_report": "Block & Report",
+  "confirmations.block.block_and_report": "차단하고 신고하기",
   "confirmations.block.confirm": "차단",
   "confirmations.block.message": "정말로 {name}를 차단하시겠습니까?",
   "confirmations.delete.confirm": "삭제",
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 75a9be045..2ad93c59d 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -5308,6 +5308,7 @@ noscript {
       margin-left: -2px;
 
       .account__avatar {
+        background: darken($ui-base-color, 8%);
         border: 2px solid lighten($ui-base-color, 4%);
       }
     }
diff --git a/app/javascript/styles/mastodon/stream_entries.scss b/app/javascript/styles/mastodon/stream_entries.scss
index d8bd30377..a739c446d 100644
--- a/app/javascript/styles/mastodon/stream_entries.scss
+++ b/app/javascript/styles/mastodon/stream_entries.scss
@@ -99,9 +99,9 @@
     }
   }
 
-  &:active,
-  &:focus,
-  &:hover {
+  &:active:not(:disabled),
+  &:focus:not(:disabled),
+  &:hover:not(:disabled) {
     background: lighten($ui-highlight-color, 10%);
 
     svg path:last-child {
diff --git a/app/javascript/styles/mastodon/widgets.scss b/app/javascript/styles/mastodon/widgets.scss
index 645192ea4..307e509d5 100644
--- a/app/javascript/styles/mastodon/widgets.scss
+++ b/app/javascript/styles/mastodon/widgets.scss
@@ -352,6 +352,7 @@
     border-radius: 50%;
     position: relative;
     margin-left: -10px;
+    background: darken($ui-base-color, 8%);
     border: 2px solid $ui-base-color;
 
     &:nth-child(1) {
diff --git a/app/lib/activitypub/adapter.rb b/app/lib/activitypub/adapter.rb
index 7e0b16c25..94eb2899c 100644
--- a/app/lib/activitypub/adapter.rb
+++ b/app/lib/activitypub/adapter.rb
@@ -18,6 +18,7 @@ class ActivityPub::Adapter < ActiveModelSerializers::Adapter::Base
     atom_uri: { 'ostatus' => 'http://ostatus.org#', 'atomUri' => 'ostatus:atomUri' },
     conversation: { 'ostatus' => 'http://ostatus.org#', 'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri', 'conversation' => 'ostatus:conversation' },
     focal_point: { 'toot' => 'http://joinmastodon.org/ns#', 'focalPoint' => { '@container' => '@list', '@id' => 'toot:focalPoint' } },
+    identity_proof: { 'toot' => 'http://joinmastodon.org/ns#', 'IdentityProof' => 'toot:IdentityProof' },
   }.freeze
 
   def self.default_key_transform
diff --git a/app/lib/proof_provider/keybase.rb b/app/lib/proof_provider/keybase.rb
index 672e1cb4b..628972e9d 100644
--- a/app/lib/proof_provider/keybase.rb
+++ b/app/lib/proof_provider/keybase.rb
@@ -28,7 +28,8 @@ class ProofProvider::Keybase
       return
     end
 
-    return if @proof.provider_username.blank?
+    # Do not perform synchronous validation for remote accounts
+    return if @proof.provider_username.blank? || !@proof.account.local?
 
     if verifier.valid?
       @proof.verified = true
diff --git a/app/serializers/activitypub/actor_serializer.rb b/app/serializers/activitypub/actor_serializer.rb
index 4b982b955..0644219fb 100644
--- a/app/serializers/activitypub/actor_serializer.rb
+++ b/app/serializers/activitypub/actor_serializer.rb
@@ -6,7 +6,7 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
   context :security
 
   context_extensions :manually_approves_followers, :featured, :also_known_as,
-                     :moved_to, :property_value, :hashtag, :emoji
+                     :moved_to, :property_value, :hashtag, :emoji, :identity_proof
 
   attributes :id, :type, :following, :followers,
              :inbox, :outbox, :featured,
@@ -115,7 +115,7 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
   end
 
   def virtual_attachments
-    object.fields
+    object.fields + object.identity_proofs.active
   end
 
   def moved_to
@@ -158,4 +158,24 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
       Formatter.instance.format_field(object.account, object.value)
     end
   end
+
+  class AccountIdentityProofSerializer < ActivityPub::Serializer
+    attributes :type, :name, :signature_algorithm, :signature_value
+
+    def type
+      'IdentityProof'
+    end
+
+    def name
+      object.provider_username
+    end
+
+    def signature_algorithm
+      object.provider
+    end
+
+    def signature_value
+      object.token
+    end
+  end
 end
diff --git a/app/services/activitypub/process_account_service.rb b/app/services/activitypub/process_account_service.rb
index 5e3308428..6d0609ca0 100644
--- a/app/services/activitypub/process_account_service.rb
+++ b/app/services/activitypub/process_account_service.rb
@@ -24,6 +24,7 @@ class ActivityPub::ProcessAccountService < BaseService
         create_account if @account.nil?
         update_account
         process_tags
+        process_attachments
       else
         raise Mastodon::RaceConditionError
       end
@@ -151,7 +152,7 @@ class ActivityPub::ProcessAccountService < BaseService
 
   def property_values
     return unless @json['attachment'].is_a?(Array)
-    @json['attachment'].select { |attachment| attachment['type'] == 'PropertyValue' }.map { |attachment| attachment.slice('name', 'value') }
+    as_array(@json['attachment']).select { |attachment| attachment['type'] == 'PropertyValue' }.map { |attachment| attachment.slice('name', 'value') }
   end
 
   def mismatching_origin?(url)
@@ -231,6 +232,23 @@ class ActivityPub::ProcessAccountService < BaseService
     end
   end
 
+  def process_attachments
+    return if @json['attachment'].blank?
+
+    previous_proofs = @account.identity_proofs.to_a
+    current_proofs  = []
+
+    as_array(@json['attachment']).each do |attachment|
+      next unless equals_or_includes?(attachment['type'], 'IdentityProof')
+      current_proofs << process_identity_proof(attachment)
+    end
+
+    previous_proofs.each do |previous_proof|
+      next if current_proofs.any? { |current_proof| current_proof.id == previous_proof.id }
+      previous_proof.delete
+    end
+  end
+
   def process_emoji(tag)
     return if skip_download?
     return if tag['name'].blank? || tag['icon'].blank? || tag['icon']['url'].blank?
@@ -247,4 +265,12 @@ class ActivityPub::ProcessAccountService < BaseService
     emoji.image_remote_url = image_url
     emoji.save
   end
+
+  def process_identity_proof(attachment)
+    provider          = attachment['signatureAlgorithm']
+    provider_username = attachment['name']
+    token             = attachment['signatureValue']
+
+    @account.identity_proofs.where(provider: provider, provider_username: provider_username).find_or_create_by(provider: provider, provider_username: provider_username, token: token)
+  end
 end